Soft Magnetic Iron For Manufacturing Rotor Disc And Stator Disc<\/p>\n\n\n\n
Axial flux brushless direct current motors (AFBLDC) are becoming popular in many applications
including electrical vehicles because of their ability to meet the demand of high power density,
high efficiency, wide speed range, robustness, low cost and less maintenance. In this paper,
AFBLDC motor drive with single sided configuration having 24 stator poles and 32 permanent
magnets on the rotor is proposed. It is driven by six pulse inverter that is fed from a single phase
AC supply through controlled AC to DC converter. The speed control and braking methods are
also proposed based on pulse width modulation technique. The overall scheme is simulated in
MATLAB environment and tested under different operating conditions. A prototype of proposed
AFBLDC motor drive is designed and fabricated. The control methods are implemented using
DSC dsPIC33EP256MC202 digital signal controller. Tests are performed on this prototype to
validate its performance at different speeds with and without braking mode. It is observed that
the proposed scheme works effectively and can be used as wheel direct driven motor for
electrical vehicle.<\/p>\n\n\n\n
With the development of power electronics technology, permanent magnet brushless DC motors
have developed rapidly and are now widely used in electric vehicles, fywheel energy storage,
rail transit, and other applications. Te stator slot structure is one of the main factors afecting the
performance of the motor. A low-power permanent magnet brushless DC motor was selected
as the research object, and the fnite element analysis method was used to study the efects of
diferent slot and pole combinations and stator slot types on the cogging torque, reluctance torque,
and back electromotive force of the permanent magnet brushless DC motor. Te infuence of the
stator slot structure of the motor on the performance of the motor was analyzed, and the optimal
slotpole combination and stator slot type were determined. Te results showed that the cogging
torque of the 2-stage 24-slot motor was 14 mN\u00b7m, and the reluctance torque was 75 mN\u00b7m. Te
cogging torque and reluctance torque were the smallest, and the back electromotive force
waveform was similar to a trapezoidal wave. Te motor cogging torque of the pear-shaped
round slot was the smallest, with a value of 460 mN\u00b7m, and the motor reluctance torque of the
pear-shaped trapezoidal slot was the smallest, with a value of 1.2 N\u00b7m. Te back electromotive
force waveforms of the motors with four diferent stator slot types were similar.<\/p>\n\n\n\n
Te permanent magnet brushless
DC motor is a brushless DC motor that generates a main
magnetic feld through a permanent magnet. Tere are many
classifcations of permanent magnet brushless DC motors.
For example, the design of a permanent magnet brushless
DC motor using a fractional slot can improve the efciency
and power density, improve the motor rotation speed, and
make the motor a high-speed permanent magnet brushless
DC motor. Compared with an ordinary permanent magnet
brushless DC motor, a high-speed permanent magnet
brushless DC motor has the advantages of low noise, high
operating efciency, and a long service life. Te research on
high-speed permanent magnet brushless DC motors is also
consistent with China\u2019s development direction toward high
efciency and energy conservation, and thus, these motors
have great advantages [2\u20137].
Te research on permanent magnet brushless DC motors is
very popular and involves various felds. In the feld of
deep space satellites, Xu changed the permanent magnet
structure of the permanent magnet brushless DC motor into
a double coil form and then studied and designed a permanent
magnet brushless DC motor using the momentum
wheels of micro-nano satellites, which solved the issues of
low torque and high power consumption [8]. Peng designed
a slot-free, high-speed scheme based on a permanent magnet
brushless DC motor and obtained a new type of motor. In
addition, for this new type of motor, the infuences of
diferent stator slot and rotor pole number combinations on
the motor performance were analyzed [9]. Su studied different
stator slot and rotor pole combinations, obtained
appropriate pole slot combinations through simulation
analysis, and designed a permanent magnet brushless DC
motor for the unmanned aerial vehicle (UAV) feld [10]. Li
studied a brushless DC motor for electric vehicles and
optimized the cogging torque of the motor [11]. Kim et al.
compared combinations of the stator slot and rotor pole of
permanent magnet brushless DC motors and found that the
motor with six slots had the best efciency. In addition, they
also compared the magnetization directions of the motor
and found that the concentrated magnetization direction
had the best efciency [12]. Bhuvaneswari et al. selected a
permanent magnet brushless DC motor with an axial
magnetic fux type and designed a permanent magnet
brushless DC motor applied to a ceiling fan to conserve
power [13]. To reduce the cogging torque in the permanent
magnet brushless DC motor, Anuja and Doss adopted
asymmetric permanent magnets, which reduced the magnet
locking between the stator and rotor [14]. Anuja and
Ravikumar et al. also used the fnite element analysis method
and adjusted the rotor magnetic displacement to reduce the
cogging torque in a permanent magnet brushless DC motor
[15, 16]. Zuki et al. studied various parameters of diferent
types of permanent magnet brushless DC motors with
double-stator structures and concluded that the back
electromotive force (EMF) of the permanent magnet brushless
DC motor with a double-stator slot rotor structure was the
highest [17].
At present, permanent magnet brushless DC motors
have high research value and development potential.
However, the research on permanent magnet brushless DC
motors in the literature described above is not complete, and
the stator slot design is lacking. Te stator slot structure will
have a certain impact on the motor performance. In the
design of motor, the most difcult thing to determine is the
number of slot pole ft. If not selected properly, it will cause
the back potential harmonics to be larger, the cogging
moment to be larger, and afect the usability [18, 19].
Terefore, the low-power permanent magnet brushless DC
motor was selected as the research object in this study. Te
stator slot structure of the motor was designed, including the
slot-pole combinations and the stator slot type. To study the
stator slot type, four diferent schemes were designed:
a pearshaped ladder slot, pear-shaped round slot, fat-bottom
ladder slot, and fat-bottom round slot, and their efects on
the cogging torque, reluctance torque, and back EMF were
analyzed. Te infuences of diferent slot-pole combinations
and the stator slot type on the cogging torque, reluctance
torque, and back EMF of the permanent magnet brushless
DC motor were analyzed using the fnite element analysis
method and the ANSYS software using a load current excitation
source and the motion option setting. Furthermore,
the optimal pole\/slot ratio and stator slot type were
determined.
Te results showed that the cogging torque of the 2-stage
24-slot motor was 14 mN\u2219m, and the reluctance torque was
75 mN\u2219m. Moreover, the cogging torque and the reluctance
torque of the 2-stage 24-slot motor were the smallest. In
addition, the back EMF waveform was the best, resembling a
trapezoidal wave; the permanent magnet brushless DC
motor stator slot type; the motor cogging torque of the pearshaped
circular slot was the smallest, with a value of 460 mN\u00b7m, and the
motor reluctance torque of the pearshaped ladder slot was the
smallest, with a value of 1.2 N\u00b7m.
Te conclusion of this study can provide theoretical support
for the design of low-power brushless DC motors, especially
for the design of small UAV motors.<\/p>\n\n\n\n
Browse classification<\/p>\n\n\n\n
H: ELECTRICITY
H02: GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02K: DYNAMO-ELECTRIC MACHINES
H02K1\/00: Details of the magnetic circuit
H02K1\/02: . characterised by the magnetic material
H02K1\/27B2C1: . . . . . . . Embedded magnets[C0205]
H02K1\/27B2C1B: . . . . . . . . consisting of tangentially magnetised radial magnets, e.g. of the flux concentration type[N0205][C0403]
H02K1\/27B2C2: . . . . . . . Inset magnets[N0312]
H02K1\/27B2C3: . . . . . . . Surface mounted magnets[N0205]
H02K1\/04: . characterised by the material used for insulating the magnetic circuit or parts thereof
H02K1\/06: . characterised by the shape, form, or construction
H02K1\/08: . . Salient poles
H02K1\/10: . . . Commutating poles
H02K1\/12: . . Stationary parts of the magnetic circuit
H02K1\/14: . . . Stator cores with salient poles
H02K1\/14B: . . . . consisting of C-shaped cores
H02K1\/14B1: . . . . . of the horse-shoe type
H02K1\/14C: . . . . having an annular coil, e.g. of the claw-pole type
H02K1\/14D: . . . . consisting of a generally annular yoke with salient poles
H02K1\/14D1: . . . . . Sectional cores H02K1\/14B takes precedence
H02K1\/16: . . . Stator cores with slots for windings
H02K1\/16B: . . . . Shape, form or location of the slots
H02K1\/17: . . . Stator cores with permanent magnets
H02K1\/18: . . . Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
H02K1\/18A: . . . . to stators axially facing the rotor, i.e. with axial or conical air gap
H02K1\/18B: . . . . to outer stators
H02K1\/18C: . . . . to inner stators
H02K1\/20: . . . with channels or ducts for flow of cooling medium
H02K1\/22: . . Rotating parts of magnetic circuit
H02K1\/22B: . . . Rotor cores with windings and permanent magnets for additional excitation in synchronous motors or generators H02K21\/04R; in synchronous motors having additional short-circuited winding for starting as an asynchronous motor H02K21\/46
H02K1\/22B1: . . . . of the claw-pole type
H02K1\/24: . . . Rotor cores with salient poles; Variable reluctance rotors
H02K1\/24B: . . . . of the claw-pole type
H02K1\/24C: . . . . Variable reluctance rotors
H02K1\/26: . . . Rotor cores with slots for windings
H02K1\/26B: . . . . Shape, form or location of the slots
H02K1\/27: . . . Rotor cores with permanent magnets rotor cores for synchronous machines with means for mechanical adjustment of the excitation flux H02K21\/02M
H02K1\/27B: . . . . Inner rotor
H02K1\/27B1: . . . . . where the magnetisation axis of the magnets is axial
H02K1\/27B2: . . . . . where the magnetisation axis of the magnets is radial or tangential
H02K1\/27B2B: . . . . . . consisting of a single magnet or of a plurality of axially juxtaposed single magnets
H02K1\/27B2B2: . . . . . . . Annular magnets
H02K1\/27B2C: . . . . . . consisting of a plurality of circumferentially positioned magnets
H02K1\/27B2C4: . . . . . . . consisting of magnets arranged with the same polarity
H02K1\/27B2C5: . . . . . . . consisting of magnets or groups of magnets arranged with alternating polarity
H02K1\/27B2C5E: . . . . . . . . Magnets embedded in the magnetic core
H02K1\/27B2C5E2: . . . . . . . . . having a flux concentration effect
H02K1\/27B2C5E2R: consisting of tangentially magnetized radial magnets
H02K1\/27B2C5S: . . . . . . . . Surface mounted magnets; Inset magnets
H02K1\/27C: . . . . Outer rotor
H02K1\/27D: . . . . Rotor axially facing stator
H02K1\/28: . . . Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
H02K1\/30: . . . . using intermediate part or parts, e.g. spider
H02K1\/32: . . . with channels or ducts for flow of cooling medium
H02K1\/32B: . . . . between salient poles
H02K1\/34: . . Reciprocating, oscillating, or vibrating part of magnetic circuit
H02K3\/00: Details of windings
H02K3\/02: . Windings characterised by the conductor material
H02K3\/04: . Windings characterised by the conductor shape, form, or construction, e.g. with bar conductor
H02K3\/12: . . arranged in slots
H02K3\/12B: . . . Connections of the winding ends
H02K3\/14: . . . with transposed conductors, e.g. twisted conductor
H02K3\/16: . . . for damping, commutating, or other auxiliary purposes
H02K3\/18: . . Windings for salient poles
H02K3\/20: . . . for damping, commutating, or other auxiliary purposes
H02K3\/22: . . consisting of hollow conductors
H02K3\/24: . . with channels or ducts between the conductors for flow of cooling medium
H02K3\/26: . . consisting of printed conductors
H02K3\/28: . . Layout of windings or of connections between windings
H02K3\/30: . Windings characterised by the insulating material
H02K3\/32: . Windings characterised by the shape, form, or construction of the insulation H02K3\/46 takes precedence
H02K3\/32B: . . for windings on salient poles, such as claw-shaped poles
H02K3\/34: . . between conductors or between conductor and core, e.g. slot insulation
H02K3\/34B: . . . between conductor and core, e.g. slot insulation
H02K3\/38: . . around winding heads, equalising connectors, or connections thereto
H02K3\/40: . . for high voltage, e.g. affording protection against corona
H02K3\/42: . Means for preventing or reducing eddy-current losses in the winding heads, e.g. by shielding
H02K3\/44: . Protection against moisture or chemical attack; Windings specially adapted for operation in liquid or gas
H02K3\/46: . Fastening of windings on stator or rotor structure
H02K3\/47: . . Air-gap windings, i.e. iron-free windings
H02K3\/48: . . in slots
H02K3\/487: . . . Slot-closing devices
H02K3\/493: . . . . where the devices are magnetic
H02K3\/50: . . Fastening of winding heads, equalising connectors, or connections thereto H02K3\/52 takes precedence
H02K3\/50B: . . . for large machine windings, e.g. bar windings H02K3\/51 takes precedence
H02K3\/50C: . . . for magnet wire windings (H02K3\/51 takes precedence)[N9709]
H02K3\/51: . . . applicable to rotors only
H02K3\/52: . . Fastening salient pole windings or connections thereto
H02K3\/52A: . . . applicable to stators only
H02K3\/52A1: . . . . for generally annular cores with salient poles
H02K3\/52A2: . . . . for U-shaped, E-shaped or similarly shaped cores
H02K3\/52A3: . . . . Annular coils, e.g. for cores of the claw-pole type
H02K3\/52B: . . . applicable to rotors only
H02K3\/52B1: . . . . of the claw-pole type
H02K5\/00: Casings; Enclosures; Supports
H02K5\/02: . Casings or enclosures characterised by the material thereof
H02K5\/04: . Casings or enclosures characterised by the shape, form or construction thereof
H02K5\/06: . . Cast metal casings
H02K5\/08: . . Insulating casings
H02K5\/10: . . affording protection from ingress, e.g. of water, of fingers means for protecting brushes or brush holders H02K5\/14
H02K5\/12: . . specially adapted for operating in liquid or gas
H02K5\/124: . . . Sealing of the shaft
H02K5\/128: . . . using air-gap sleeve or air-gap disc
H02K5\/128B: . . . . the partition wall in the air-gap being non cylindrical
H02K5\/128C: . . . . of the submersible type
H02K5\/132: . . . Submersible electric motor
H02K5\/136: . . . explosion-proof
H02K5\/14: . . Means for supporting or protecting brushes or brush holders
H02K5\/14B: . . . for cooperation with slip-rings
H02K5\/14C: . . . for cooperation with commutators
H02K5\/14C1: . . . . Fixedly supported brushes or brush holders, e.g. leaf or leaf-mounted brushes
H02K5\/14C2: . . . . [N: Pivotally supported brushes or brush holders]
H02K5\/14C3: . . . . Slidably supported brushes
H02K5\/15: . . Mounting arrangements for bearing-shields or end plates
H02K5\/16: . . Means for supporting bearings, e.g. insulating support, means for fitting the bearing in the bearing-shield
H02K5\/167: . . . using sliding-contact or spherical cap bearings
H02K5\/167C: . . . . radially supporting the rotary shaft at both ends of the rotor H02K5\/167E takes precedence
H02K5\/167D: . . . . radially supporting the rotary shaft at only one end of the rotor H02K5\/167E takes precedence
H02K5\/167E: . . . . radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
H02K5\/16C: . . . radially supporting the rotary shaft at both ends of the rotor H02K5\/16E, H02K5\/167, H02K5\/173 take precedence
H02K5\/16D: . . . radially supporting the rotary shaft at only one end of the rotor H02K5\/16E, H02K5\/167, H02K5\/173 take precedence
H02K5\/16E: . . . radially supporting the rotor around a fixed spindle; radially supporting the rotor directly H02K5\/167, H02K5\/173 take precedence
H02K5\/173: . . . using ball bearings or bearings with rolling contact
H02K5\/173C: . . . . radially supporting the rotary shaft at both ends of the rotor H02K5\/173E takes precedence
H02K5\/173D: . . . . radially supporting the rotary shaft at only one end of the rotor H02K5\/173E takes precedence
H02K5\/173E: . . . . radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
H02K5\/18: . . with ribs or fins for improving heat transfer
H02K5\/20: . . with channels or ducts for flow of cooling medium
H02K5\/22: . . Other additional parts of casings, e.g. shaped to form connection or terminal box
H02K5\/22B: . . . Terminal boxes or connection arrangements specially adapted for submersible motors H02K5\/132
H02K5\/24: . specially adapted for suppression or reduction of noise or vibration elastic means for supporting brush holders H02K5\/14; elastic means for supporting bearings H02K5\/16
H02K5\/26: . Means for adjusting the casing relative to its support
H02K7\/00: Arrangements for handling mechanical energy structurally associated with the machine, e.g. structural association with mechanical driving motor or auxiliary dynamo-electric machine
H02K7\/00B: . Couplings; Details of shafts means for mounting rotors on shafts H02K1\/28
H02K7\/00C: . Structural association of a motor or generator with the drive train of a motor vehicle
H02K7\/02: . Additional mass for increasing inertia, e.g. fly-wheel
H02K7\/02B: . . for power storage
H02K7\/04: . Balancing means
H02K7\/06: . Means for converting reciprocating into rotary motion or vice-versa
H02K7\/065: . . Electromechanical oscillators; Vibrating magnetic drives
H02K7\/06B: . . using rotary unbalanced masses for generating mechanical vibrations in general B06B1\/16
H02K7\/06B1: . . . integrally combined with motor parts, e.g. motors with eccentric rotors
H02K7\/07: . . using pawl and ratchet wheel
H02K7\/075: . . using crankshaft or eccentric
H02K7\/08: . Structural association with bearings
H02K7\/08A: . . specially adapted for large diameter vertical shaft maschines
H02K7\/08B: . . specially adapted for worm gear drives H02K7\/09 takes precedence
H02K7\/08C: . . radially supporting the rotary shaft at both ends of the rotor H02K7\/08E, H02K7\/09 take precedence
H02K7\/08D: . . radially supporting the rotary shaft at only one end of the rotor H02K7\/08E, H02K7\/09 take precedence
H02K7\/08E: . . radially supporting the rotor around a fixed spindle; radially supporting the rotor directly H02K7\/09 takes precedence
H02K7\/08E1: . . . radially supporting the rotor directly
H02K7\/09: . . with magnetic bearings
H02K7\/10: . Structural association with clutches, brakes, gears, pulleys, mechanical starters
H02K7\/102: . . with friction brakes
H02K7\/102B: . . . Magnetically influenced friction brakes
H02K7\/102B2: . . . . using electromagnets
H02K7\/102B2B: . . . . . using axial electromagnets with generally annular air gap
H02K7\/102B3: . . . . using stray fields
H02K7\/102B3B: . . . . . axially attracting the brake armature in the frontal area of the magnetic core
H02K7\/104: . . with eddy-current brakes
H02K7\/106: . . with dynamo-electric brakes
H02K7\/108: . . with friction clutches
H02K7\/108B: . . . Magnetically influenced friction clutches
H02K7\/10B: . . with pulleys
H02K7\/10B2: . . . structurally associated with the machine rotor H02K7\/10B3 takes precedence
H02K7\/10B3: . . . Machine arranged inside the pulley
H02K7\/10B3B: . . . . Machine of the outer rotor type
H02K7\/11: . . with dynamo-electric clutches
H02K7\/112: . . with friction clutches and brakes
H02K7\/112B: . . . Magnetically influenced friction clutches and brakes
H02K7\/114: . . with dynamo-electric clutches and brakes
H02K7\/116: . . with gears
H02K7\/116B: . . . where at least two gears have non-parallel axes without having orbital motion
H02K7\/116B1: . . . . comprising worm and worm-wheel structural association with bearings specially adapted for worm gear drives H02K7\/08B
H02K7\/118: . . with starting device
H02K7\/118B: . . . with a mechanical one-way direction control, i.e. with means for reversing the direction of rotation of the rotor
H02K7\/12: . . with auxiliary limited movement of stator, rotor, or core parts, e.g. rotor axially movable for the purpose of clutching or braking
H02K7\/12B: . . . magnetically influenced
H02K7\/14: . Structural association with mechanical load, e.g. hand-held machine tool, fan
H02K7\/14B: . . Hand-held machine tool
H02K7\/16: . . for operation above critical speed of vibration of rotating parts
H02K7\/18: . Structural association of electric generator with mechanical driving motor, e.g. turbine
H02K7\/18A: . . Rotary generators H02K7\/00C takes precedence
H02K7\/18A1: . . . structurally associated with reciprocating piston engines general aspects of generating sets, e.g. housing, F02B63\/04
H02K7\/18A2: . . . structurally associated with turbines or similar engines
H02K7\/18A2W: . . . . wherein the turbine is a wind turbine adaptation of a wind turbine to an electric generator F03D9\/00C
H02K7\/18A2W2: . . . . . Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
H02K7\/18A3: . . . structurally associated with wheels or associated parts dynamos arranged in the wheel hub of cycles B62J6\/12
H02K7\/18A4: . . . driven by intermittent forces
H02K7\/18A5: . . . driven by animals or vehicles H02K7\/18A4 takes precedence [M1203]
H02K7\/18B: . . Linear generators; sectional generators
H02K7\/18B1: . . . with reciprocating, linearly oscillating or vibrating parts
H02K7\/18B1B: . . . . structurally associated with free piston engines
H02K7\/18C: . . Generators with parts oscillating or vibrating about an axis
H02K7\/20: . Structural association with auxiliary dynamo-electric machine, e.g. with electric starter motor, with exciter
H02K9\/00: Systems for cooling or ventilating
H02K9\/00B: . [N: Details of cooling systems with unspecified cooling medium flowing through channels in or between the conductors]
H02K9\/02: . by ambient air flowing through the machine
H02K9\/04: . . having means for generating flow of cooling medium, e.g. having fan
H02K9\/06: . . . with fan or impeller driven by the machine shaft
H02K9\/08: . by gaseous cooling medium circulating wholly within the machine casing
H02K9\/10: . by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
H02K9\/12: . . wherein the cooling medium circulates freely within the casing
H02K9\/14: . wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle
H02K9\/16: . . wherein the cooling medium circulates through ducts or tubes within the casing
H02K9\/18: . . wherein the external part of the closed circuit comprises a heat exchanger structurally associated with the machine casing
H02K9\/19: . for machines with closed casing and with closed circuit cooling using a liquid cooling medium, e.g. oil
H02K9\/193: . . with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
H02K9\/197: . . in which the rotor or stator space is fluid tight, e.g. to provide for different cooling media for rotor and stator
H02K9\/20: . . wherein the cooling medium vaporises within the machine casing
H02K9\/22: . by solid heat conducting material embedded in, or arranged in contact with, stator or rotor, e.g. heat bridge
H02K9\/24: . Protection against failure of cooling arrangements, e.g. due to loss of cooling medium, due to interruption of the circulation of cooling medium
H02K9\/26: . Structural association with machine of devices for cleaning or drying cooling medium, e.g. of filter
H02K9\/28: . Cooling of commutators, slip-rings, or brushes, e.g. by ventilating,
H02K11\/00: Structural association with measuring or protective devices or electric components, e.g. with resistor, with switch, with suppressor for radio interference heating or drying of machines in operational state, e.g. standstill heating H02K15\/12B; structural association with auxiliary electric devices influencing the characteristic of, or controlling: asynchronous induction motors H02K17\/30; synchronous generators withoutpermanent magnets H02K19\/36; dc commutator machines or universal ac\/dc commutator motors H02K23\/66; ac commutator machines H02K27\/28
H02K11\/00B: . [N: Electric or magnetic shielding arrangements, i.e. for shielding the electrical machine, the machine components or external devices against electric or magnetic fields generated inside or outside the machine (H02K11\/02 takes precedence)]
H02K11\/00F: . [N: Structural association with devices for measuring, monitoring, protecting, switching]
H02K11\/00F1: . . actuated by or sensing speed or position specially adapted for machines having non-mechanical commutating devices H02K29\/06, H02K29\/14
H02K11\/00F1B: . . . [N:using magnetic effect devices, e.g. Hall, magneto-resistive elements]
H02K11\/00F1C: . . . [N:using optical devices]
H02K11\/00F1D: . . . using detecting coils; using the machine windings as detecting coil [M1207]
H02K11\/00F1E: . . . [N:using mechanically actuated centrifugal switches]
H02K11\/00F2: . . [N: actuated by or sensing torque]
H02K11\/00F3: . . actuated by or sensing temperature overcurrent protection sensitive to other parameters than temperature H02K11\/00F5
H02K11\/00F4: . . [N: actuated by or sensing over-voltage, e.g. over-voltage protection]
H02K11\/00F5: . . actuated by or sensing overcurrent
H02K11\/00F6: . . [N: Manual switches]
H02K11\/00H: . [N: Structural association with control circuits, drive circuits]
H02K11\/00H1: . . Drive circuits, e.g. power electronics H02K11\/00H3 and H02K11\/04D1 take precedence
H02K11\/00H2: . . [N: with devices for recording or transmitting machine parameters, e.g. memory chips for diagnostic; radio-transmitters]
H02K11\/00H3: . . [N: associated with gear motors of the worm-and-wheel type]
H02K11\/00J: . [N: Structural association with grounding devices]
H02K11\/00K: . [N: Structural association with other electrical or electronic devices]
H02K11\/02: . for suppression of radio interference
H02K11\/02A: . . Details, e.g. shields
H02K11\/02A1: . . . Suppressors
H02K11\/02A1B: . . . . associated with brushes, brush holders or their supports
H02K11\/02A1C: . . . . associated with the rotor H02K13\/10B takes precedence
H02K11\/04: . for rectification
H02K11\/04B: . . with rotating rectifiers
H02K11\/04C: . . in motors H02K11\/04B takes precedence
H02K11\/04D: . . in generators H02K11\/04B takes precedence
H02K11\/04D1: . . . [N: Rectifiers combined with drive circuits in starter-generators]
H02K13\/00: Structural associations of current collectors with motors or generators, e.g. brush mounting plates, connections to windings ; Disposition of current collectors in motors or generators; Arrangements for improving commutation
H02K13\/00B: . Structural associations of slip-rings
H02K13\/00C: . Structural associations of commutators
H02K13\/02: . Connections of slip-rings with the winding
H02K13\/04: . Connections of commutator segments with the winding
H02K13\/06: . . Resistive connections between winding and commutator segments, e.g. by high-resistance choke, by transistor
H02K13\/08: . . Segments formed by extensions of winding
H02K13\/10: . Special arrangements of brushes or commutators for the purpose of improving commutation
H02K13\/10B: . . Spark suppressors associated with the commutator
H02K13\/12: . Means for producing an axial reciprocation of the rotor and its associated current collector part, e.g. for polishing commutator surface
H02K13\/14: . Circuit arrangements for improvement of commutation, e.g. by use of unidirectionally conductive element
H02K15\/00: Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing dynamo-electric machines
H02K15\/00A: . [N: Disassembling, repairing or modifying dynamo-electric machines (repairing of cooling fluid boxes H02K15\/00E4C2)]
H02K15\/00B: . Manufacturing cage rotors
H02K15\/00C: . Applying slot closure means in the core; Manufacture of slot closure means
H02K15\/00D: . Shaping or compacting conductors or winding heads after the installation of the winding in the core or machine methods or apparatus for simultaneously twisting a plurality of hairpins prior to mounting H02K15\/04C1B; Applying fastening means on winding heads
H02K15\/00D1: . . (deleted; content transferred to H02K15\/00D3B)
H02K15\/00D2: . . [N: Shaping or compacting conductors in slots or around salient poles (H02K15\/00D4 takes precedence)]
H02K15\/00D3: . . Shaping or compacting winding heads H02K15\/00D4, H02K15\/00E4C1 and H02K15\/04C1B take precedence
H02K15\/00D3B: . . . Applying fastening means on winding headS fastening by applying resin, glue, varnish and similar means H02K15\/12
H02K15\/00D4: . . [N: by means of electrodynamic forces]
H02K15\/00E: . [N: Manufacturing winding connections (manufacturing connectors in general H01R43\/00)]
H02K15\/00E2: . . [N: Manufacturing the terminal arrangement per se; Connecting the terminals to an external circuit]
H02K15\/00E4: . . [N: Connecting winding sections; Forming leads; Connecting leads to terminals]
H02K15\/00E4B: . . . for random-wound windings
H02K15\/00E4C: . . . for form-wound windings
H02K15\/00E4C1: . . . . [N: characterised by the method or apparatus for simultaneously twisting a plurality of hairpins open ends after insertion into the machine (for simultaneously twisting a plurality of hairpins prior to mounting into the machine H02K15\/04C1B)]
H02K15\/00E4C2: . . . . [N: Manufacturing or repairing cooling fluid boxes, i.e. terminals of fluid cooled windings ensuring both electrical and fluid connection] [
H02K15\/02: . of stator or rotor bodies
H02K15\/02B: . . with salient poles or claw-shaped poles
H02K15\/02C: . . with slots
H02K15\/02C1: . . . Wound cores
H02K15\/02C2: . . . for fastening to casing or support, respectively to shaft or hub
H02K15\/03: . . having permanent magnets
H02K15\/04: . of windings, prior to mounting into the machine
H02K15\/04B: . . [N: Windings manufactured by etching, printing or stamping the complete coil]
H02K15\/04C: . . [N: Windings consisting of separate elements, e.g. bars, hairpins, segments, half coils]
H02K15\/04C1: . . . consisting of single conductors, e.g. hairpins
H02K15\/04C1B: . . . . characterised by the method or apparatus for simultaneously twisting a plurality of hairpins for simultaneously twisting a plurality of hairpins open ends after insertion into the machine H02K15\/00E4C1
H02K15\/04C2: . . . [N: Hollow coils consisting of diagonally arranged conductors]
H02K15\/04D: . . [N: Wound windings]
H02K15\/04D1: . . . [N: Loop windings (manufacturing of windings consisting of overlapped loops H02K15\/04D2)]
H02K15\/04D1B: . . . . [N: consisting of non-circular section wire]
H02K15\/04D1B1: . . . . . [N: Diamond coils]
H02K15\/04D1B2: . . . . . Hexagonal coils, i.e. with two sides inserted in a core slots and the other sides forming the winding heads
H02K15\/04D1C: . . . . [N: consisting of circular section wire]
H02K15\/04D1C1: . . . . . [N: Deformable coils for insertion in a machine core, e.g. random wound coils]
H02K15\/04D1C2: . . . . . Deformable coils for insertion in a machine core, e.g. random wound coils
H02K15\/04D1F: . . . . Form wound coils
H02K15\/04D1R: . . . . Random wound coils
H02K15\/04D2: . . . Lap windings when on diagonally wound hollow coils H02K15\/04D4
H02K15\/04D2B: . . . . [N: manufactured by flattening a spiral winding]
H02K15\/04D3: . . . Wave windings, undulated windings when on diagonally wound hollow coils H02K15\/04D4 [M1203]
H02K15\/04D3B: . . . . [N: manufactured by shaping an annular winding]
H02K15\/04D4: . . . Diagonally wound hollow coils
H02K15\/06: . Embedding prefabricated windings in the machine
H02K15\/06B: . . (deleted; content transferred to H02K15\/00D4)
H02K15\/06C: . . [N: Air-gap windings]
H02K15\/06D: . . [N: Windings in slots; salient pole windings]
H02K15\/06D1: . . . Windings for large electric machines, e.g. bar windings windings consisting of cables H02K15\/06D3
H02K15\/06D2: . . . [N: Windings consisting of separate segments, e.g. hairpin windings (H02K15\/06D1 takes precedence)]
H02K15\/06D3: . . . Windings consisting of complete sections, e.g. coils, waves windings for large electric machines other than those consisting of cables H02K15\/06D1
H02K15\/06D3B: . . . . inserted perpendicularly to the axis of the slots or inter-polar channels
H02K15\/06D3C: . . . . inserted in parallel to the axis of the slots or inter-polar channels
H02K15\/06D3C1: . . . . . [N: Strippers]
H02K15\/08: . Forming windings by laying conductors into or around core part
H02K15\/085: . . by laying conductors into slotted stators
H02K15\/09: . . by laying conductors into slotted rotors
H02K15\/095: . . by laying conductors around salient poles
H02K15\/10: . Applying solid insulation to the windings, the stator, or the rotor
H02K15\/10B: . . to the windings
H02K15\/12: . Impregnating, heating or drying of windings, stators, rotors, or machines
H02K15\/12B: . . Heating or drying of machines in operational state, e.g. standstill heating
H02K15\/14: . Casings; Enclosures; Supports
H02K15\/16: . Centering the rotor within the stator; Balancing the rotor
H02K15\/16B: . . Balancing the rotor
H02K16\/00: Machines with more than one rotor or stator machines for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts H02K51\/00; permanent magnet machines with multiple rotors or stators relatively rotated for vectorially combining the excitation fields or the armature voltages H02K21\/02M3V
H02K16\/00B: . Machines with only rotors, e.g. counter-rotating rotors DC commutator machines or universal AC\/DC commutator motors having a rotating armature and a rotating excitation field H02K23\/60
H02K16\/02: . Machines with one stator and two or more rotors
H02K16\/02B: . . with rotors and moving stators connected in a cascade cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter H02K17\/34 [M1203]
H02K16\/04: . Machines with one rotor and stators
H02K17\/00: Asynchronous induction motors; Asynchronous induction generators
H02K17\/02: . Asynchronous induction motors
H02K17\/04: . . for single phase current
H02K17\/06: . . . having windings arranged for permitting pole-changing
H02K17\/08: . . . Motors with auxiliary phase obtained by externally fed auxiliary winding, e.g. capacitor motor
H02K17\/10: . . . Motors with auxiliary phase obtained by split-pole carrying short-circuited winding
H02K17\/12: . . for multi-phase current
H02K17\/14: . . . having windings arranged for permitting pole-changing
H02K17\/16: . . having rotor with internally short-circuited windings, e.g. cage rotor
H02K17\/16B: . . . characterised by the squirrel-cage or other short-circuited windings
H02K17\/18: . . . having double or multiple-cage rotor
H02K17\/18B: . . . . characterised by the double- or multiple cage windings
H02K17\/20: . . . having deep-bar rotor
H02K17\/20B: . . . . characterised by the deep-bar windings
H02K17\/22: . . having rotor with windings connected to slip-rings
H02K17\/24: . . . in which both stator and rotor are fed with ac
H02K17\/26: . . having rotor or stator designed to permit synchronous operation
H02K17\/28: . . having compensating winding for improving phase angle
H02K17\/30: . . Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the motor, e.g. with impedance, with switch
H02K17\/32: . . Structural association with auxiliary mechanical devices, e.g. clutch, brake
H02K17\/34: . . Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter
H02K17\/36: . . . with another asynchronous induction motor
H02K17\/38: . . . with a commutator machine
H02K17\/40: . . . with a rotary ac\/dc converter
H02K17\/42: . Asynchronous induction generators
H02K17\/44: . . Structural association with exciting machine
H02K19\/00: Synchronous motors or generators
H02K19\/02: . Synchronous motors
H02K19\/04: . . for single-phase current
H02K19\/06: . . . Motors having windings on the stator and a variable-reluctance soft-iron rotor without windings, e.g. inductor motor
H02K19\/08: . . . Motors having windings on the stator and a smooth rotor of material with large hysteresis without windings, e.g. hysteresis motor
H02K19\/10: . . for multi-phase current
H02K19\/10B: . . . Motors having windings on the stator and a variable reluctance soft-iron rotor without windings
H02K19\/10C: . . . Motors having windings in the stator and a smooth rotor of material with large hysteresis without windings
H02K19\/12: . . . characterised by the arrangement of exciting windings, e.g. for self-excitation, for compounding, for pole-changing
H02K19\/14: . . having additional short-circuited winding for starting as an asynchronous motor
H02K19\/16: . Synchronous generators
H02K19\/18: . . having windings each turn of which co-operates only with poles of one polarity, e.g. homopolar generator
H02K19\/20: . . . with variable-reluctance soft-iron rotor without winding
H02K19\/22: . . having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generator
H02K19\/24: . . . with variable-reluctance soft-iron rotor without winding
H02K19\/26: . . characterised by the arrangement of exciting winding
H02K19\/28: . . . for self-excitation
H02K19\/30: . . . for compounding
H02K19\/32: . . . for pole-changing
H02K19\/34: . . Generators with two or more outputs
H02K19\/36: . . Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the generator, e.g. with impedance, with switch
H02K19\/36B: . . . [N: with a voltage regulator]
H02K19\/38: . . Structural association with exciting machine
H02K21\/00: Synchronous motors having permanent magnet; Synchronous generators having permanent magnet
H02K21\/02: . Details
H02K21\/02M: . . Means for mechanical adjustment of the excitation flux
H02K21\/02M2: . . . by modifying the relative position between field and armature, e.g. between rotor and stator vectorial combination of field or armature sections H02K21\/02M3V
H02K21\/02M2S: . . . . by varying the amount of superposition, i.e. the overlap, of field and armature
H02K21\/02M2S2: . . . . . Radial air gap machines
H02K21\/02M2T: . . . . by varying the thickness of the air gap between field and armature
H02K21\/02M2T2: . . . . . Axial air gap machines
H02K21\/02M2T3: . . . . . Conical air gap machines
H02K21\/02M3: . . . by modifying the magnetic circuit within the field or the armature, e.g. by using shunts, by adjusting the magnets position, by vectorial combination of field or armature sections
H02K21\/02M3V: . . . . Vectorial combination of the fluxes generated by a plurality of field sections or of the voltages induced in a plurality of armature sections
H02K21\/04: . . Windings on magnet for additional excitation ; windings and magnets for additional excitation
H02K21\/04R: . . . with permanent magnets and field winding both rotating
H02K21\/04R1: . . . . Rotor of the claw pole type
H02K21\/04S: . . . with rotating permanent magnets and stationary field winding
H02K21\/04S1: . . . . Rotor of the claw pole type
H02K21\/10: . . Rotating armatures
H02K21\/12: . with stationary armature and rotating magnet
H02K21\/12C: . . having an annular armature coil H02K21\/14 to H02K21\/24 take precedence
H02K21\/14: . . magnet rotating within armature
H02K21\/14C: . . . having an annular armature coil with homopolar co-operation H02K21\/20
H02K21\/16: . . . having an annular armature core with salient poles
H02K21\/18: . . . having horse-shoe armature core
H02K21\/18B: . . . . with the axis of the rotor perpendicular to the plane of the armature
H02K21\/20: . . . having windings each turn of which co-operates only with poles of one polarity, e.g. homopolar machine
H02K21\/22: . . magnet rotating around armature, e.g. flywheel magneto
H02K21\/22B: . . . Flywheel magnetos
H02K21\/22B1: . . . . having I-shaped, E-shaped or similarly shaped armature cores
H02K21\/22C: . . . having an annular armature coil
H02K21\/24: . . magnet axially facing armature, e.g. hub-type cycle dynamo
H02K21\/26: . with rotating armature and stationary magnet
H02K21\/28: . . armature rotating within magnet
H02K21\/30: . . . having an annular armature core with salient poles
H02K21\/32: . . . having a horse-shoe magnet
H02K21\/32B: . . . . with the axis of the rotating armature perpendicular to the plane of the magnet
H02K21\/34: . . . having bell-shaped or bar-shaped magnet, e.g. for cycle lighting
H02K21\/36: . . . with homopolar co-operation
H02K21\/38: . with rotating flux distributor, and armature and magnet both stationary
H02K21\/40: . . flux distributor rotating around magnet and within armature
H02K21\/42: . . flux distributor rotating around armature and within magnet
H02K21\/44: . . armature windings wound upon magnet
H02K21\/46: . Motors having additional short-circuited winding for starting as an asynchronous motor
H02K21\/48: . Generators with two or more outputs
H02K23\/00: Dc commutator motors or generators having mechanical commutator; Universal ac\/dc commutator motors
H02K23\/02: . characterised by the exciting arrangement
H02K23\/02B: . . having short-circuited brushes
H02K23\/02C: . . having an unregular distribution of the exciting winding or of the excitation over the poles
H02K23\/04: . . having permanent magnet excitation
H02K23\/06: . . having shunt connection of excitation windings
H02K23\/08: . . having series connection of excitation windings
H02K23\/10: . . having compound connection of excitation windings
H02K23\/12: . . having excitation produced by a current source independent of the armature circuit
H02K23\/14: . . having high-speed excitation or de-excitation, e.g. by neutralising the remanent excitation field
H02K23\/16: . . having angularly adjustable excitation field, e.g. by pole reversing, by pole switching
H02K23\/18: . . having displaceable main or auxiliary brushes
H02K23\/20: . . having additional brushes spaced intermediately of the main brushes on the commutator, e.g. cross-field machine, metadyne, amplidyne, other armature-reaction excited machine
H02K23\/22: . . having compensating or damping winding
H02K23\/24: . . having commutating-pole winding
H02K23\/26: . characterised by the armature winding
H02K23\/28: . . having open winding, i.e. not closed within armature
H02K23\/30: . . having lap winding; having loop winding
H02K23\/32: . . having wave winding; having undulating winding
H02K23\/34: . . having mixed windings
H02K23\/36: . . having more than one winding; having more than one commutator; having more than one stator
H02K23\/38: . . having winding or connection for improving commutation, e.g. equipotential connection
H02K23\/40: . characterised by the arrangement of the magnet circuit
H02K23\/40B: . . Machines with a special form of the pole shoes
H02K23\/42: . . having split poles, i.e. zones for varying reluctance by gaps in poles or by poles with different spacing of the air gap
H02K23\/44: . . having movable or turnable iron parts
H02K23\/46: . . having stationary shunts, i.e. magnetic cross flux
H02K23\/48: . . having adjustable armature
H02K23\/50: . Generators with two or more outputs
H02K23\/52: . Motors acting also as generators, e.g. starting motor used as generator for ignition or lighting
H02K23\/54: . Disc armature motors or generators
H02K23\/56: . Motors or generators having the iron core separated from armature winding
H02K23\/58: . Motors or generators having no iron core
H02K23\/60: . Motors or generators having a rotating armature and a rotating excitation field machines with only rotors in general H02K16\/00B
H02K23\/62: . Motors or generators with stationary armature and rotating excitation field
H02K23\/64: . Motors specially adapted for running on dc or ac by choice
H02K23\/66: . Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the machine, e.g. with impedance, with switch
H02K23\/68: . Structural association with auxiliary mechanical devices, e.g. with clutch, with brake
H02K24\/00: Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn
H02K25\/00: Dc interrupter motors or generators
H02K26\/00: Machines adapted to function as torque motors, i.e. to exert a torque when stalled
H02K27\/00: Ac commutator motors or generators having mechanical commutator
H02K27\/02: . characterised by the armature winding
H02K27\/04: . having single-phase operation in series or shunt connection
H02K27\/06: . . with a single or multiple short-circuited commutator, e.g. repulsion motor
H02K27\/08: . . with multiple-fed armature
H02K27\/10: . . with switching devices for different modes of operation, e.g. repulsion-induction motor
H02K27\/12: . having multi-phase operation
H02K27\/14: . . in series connection
H02K27\/16: . . in shunt connection with stator feeding
H02K27\/18: . . in shunt connection with rotor feeding
H02K27\/20: . Structural association with a speed regulating device
H02K27\/22: . having means for improving commutation, e.g. auxiliary fields, double windings, double brushes
H02K27\/24: . having two or more commutators
H02K27\/26: . having disc armature
H02K27\/28: . Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the machine
H02K27\/30: . Structural association with auxiliary mechanical devices, e.g. clutch, brake
H02K29\/00: Motors or generators having non-mechanical commutating devices, e.g. discharge tubes, semiconductor devices
H02K29\/03: . with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
H02K29\/06: . with position sensing devices
H02K29\/08: . . using magnetic effect devices, e.g. Hall-plates, magneto-resistors
H02K29\/10: . . using light effect devices
H02K29\/12: . . using detecting coils using the machine windings as detecting coil
H02K29\/14: . with speed sensing devices
H02K31\/00: Acyclic motors or generators, i.e. dc machines having a drum or disc armature with continuous current collectors
H02K31\/02: . with solid-contact collectors
H02K31\/04: . with at least one liquid-contact collector
H02K33\/00: Motors with reciprocating, oscillating, or vibrating magnet, armature, or coil system
H02K33\/02: . with armature moved one way by energisation of a single coil system and returned by mechanical force, e.g. by spring
H02K33\/04: . . wherein the frequency of operation is determined by the frequency of uninterrupted ac energisation
H02K33\/06: . . . with polarised armature
H02K33\/08: . . . with dc energisation superimposed on ac energisation
H02K33\/10: . . wherein the alternate energisation and de-energisation of the single coil system is effected or controlled by movement of the armature
H02K33\/12: . with armature moving in alternate directions by alternate energisation of two coil systems
H02K33\/14: . . wherein the alternate energisation and de-energisation of the two coil systems are effected or controlled by movement of the armature
H02K33\/16: . with polarised armature moving in alternate directions by reversal or energisation of a single coil system
H02K33\/18: . with coil system moving upon intermittent or reversed energisation thereof by interaction with a fixed field system, e.g. permanent magnet
H02K35\/00: Generators with reciprocating, oscillating, or vibrating coil system, magnet, armature, or other part of the magnetic circuit
H02K35\/02: . with moving magnet and stationary coil system
H02K35\/04: . with moving coil system and stationary magnet
H02K35\/06: . with moving flux distributor, and both coil system and magnet stationary
H02K37\/00: Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
H02K37\/02: . variable reluctance type
H02K37\/04: . . Rotor situated within stator
H02K37\/06: . . Rotor situated around stator
H02K37\/08: . . Rotor axially facing stator
H02K37\/10: . permanent magnet type
H02K37\/12: . . with stationary armature and rotating magnet
H02K37\/12B: . . . Magnet axially facing armature
H02K37\/14: . . . Magnet rotating within armature
H02K37\/16: . . . . having horse-shoe armature core
H02K37\/18: . . . . homopolar type
H02K37\/20: . . with rotating flux distributor, the armature and magnet both being stationary
H02K37\/22: . Damping units
H02K37\/24: . Structural association with auxiliary mechanical devices
H02K39\/00: Generators specially adapted for producing a desired non-sinusoidal waveform
H02K41\/00: Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path electromagnetic launchers F41B6\/00
H02K41\/00B: . Nutating motors[N9505]
H02K41\/02: . Linear motors; Sectional motors
H02K41\/025: . . Asynchronous motors
H02K41\/03: . . Synchronous motors; Motors moving step by step; Reluctance motors
H02K41\/035: . . Dc motors; Unipolar motors
H02K41\/035B: . . . Unipolar motors
H02K41\/035B1: . . . . Lorentz force motors, e.g. voice coil motors
H02K41\/035B1B: . . . . . moving along a straight path
H02K41\/035B1C: . . . . . moving along a curvilinear path
H02K41\/03M: . . . of the permanent magnet type
H02K41\/03M1: . . . . with armature and magnets on one member, the other member being a flux distributor
H02K41\/06: . Rolling motors, i.e. having the rotor axis parallel to the stator axis and following a circular path as the rotor rolls around the inside or outside of the stator; Nutating motors, i.e. having the rotor axis inclined with respect to the stator axis and performing a nutational movement as the rotor rolls on the stator
H02K41\/06B: . . Nutating motors
H02K44\/00: Machines in which the dynamo-electric interaction between a plasma or flow of conductive liquid or of fluid-borne conductive or magnetic particles and a coil system or magnetic field converts energy of mass flow into electrical energy or vice versa
H02K44\/02: . Electrodynamic pumps
H02K44\/04: . . Conduction pumps
H02K44\/06: . . Induction pumps
H02K44\/08: . Magnetohydrodynamic (MHD) generators
H02K44\/08B: . . with conducting liquids
H02K44\/10: . . Constructional details of electrodes
H02K44\/12: . . Constructional details of fluid channel
H02K44\/14: . . . Circular or screw-shaped channel
H02K44\/16: . . Constructional details of the magnetic circuit
H02K44\/18: . . for generating ac power
H02K44\/20: . . . by changing the polarity of the magnetic field
H02K44\/22: . . . by changing the conductivity of the fluid
H02K44\/24: . . . by reversing the direction of fluid
H02K44\/26: . . . by creating a travelling magnetic field
H02K44\/28: . Association of MHD generators with conventional generators
H02K47\/00: Dynamo-electric converters
H02K47\/02: . Ac\/dc converters of vica versa
H02K47\/04: . . Motor\/generators
H02K47\/06: . . Cascade converters
H02K47\/08: . . Single-armature converters
H02K47\/10: . . . with booster machine on the ac side
H02K47\/12: . Dc\/dc converters
H02K47\/14: . . Motor\/generators
H02K47\/16: . . Single-armature converters, e.g. metadyne
H02K47\/18: . Ac\/ac converters
H02K47\/20: . . Motor\/generators
H02K47\/22: . . Single-armature frequency converters with or without phase-number conversion
H02K47\/24: . . . having windings for different numbers of poles
H02K47\/26: . . . operating as under- or over-synchronously running asynchronous induction machines, e.g. cascade arrangement of asynchronous and synchronous machines
H02K47\/28: . . . operating as commutator machines with added slip-rings
H02K47\/30: . . Single-armature phase-number converters without frequency conversion
H02K49\/00: Dynamo-electric clutches; Dynamo-electric brakes
H02K49\/02: . of the asynchronous induction type
H02K49\/04: . . of the eddy-current hysteresis type eddy current brakes cooperating with a rail B61H7\/08A
H02K49\/04B: . . . eddy-current type
H02K49\/04B2: . . . . with a radial airgap
H02K49\/04B3: . . . . with an axial airgap
H02K49\/04C: . . . with a radial airgap
H02K49\/04D: . . . with an axial airgap
H02K49\/06: . of the synchronous type H02K49\/10 takes precedence
H02K49\/06B: . . hysteresis type
H02K49\/08: . of the collector armature type
H02K49\/10: . of the permanent-magnet type
H02K49\/10B: . . Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact magnetized gearings with physical contact F16H13\/12, F16H49\/00C
H02K49\/10B2: . . . Coaxial elements[N9510]
H02K49\/10B2B: . . . . with a radial airgap[N9510]
H02K49\/10B2D: . . . . with an axial airgap[N9510]
H02K49\/10C: . . Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
H02K49\/10C1: . . . with a radial air gap
H02K49\/10C2: . . . with an axial air gap
H02K49\/12: . of the acyclic type
H02K51\/00: Dynamo-electric gears, i.e. dynamo-electric means for transmitting mechanical power from a driving shaft to a driven shaft and comprising structurally interrelated motor and generator parts
H02K53\/00: Alleged dynamo-electric perpetua mobilia
H02K55\/00: Dynamo-electric machines having windings operating at cryogenic temperatures
H02K55\/02: . of the synchronous type
H02K55\/04: . . with rotating field windings
H02K55\/06: . of the homopolar type
H02K57\/00: Dynamo-electric machines not provided for in groups H02K17\/00 to H02K55\/00
H02K57\/00B: . generators
H02K57\/00C: . motors<\/p>\n\n\n\n
Axial flux Permanent Magnet (AFPM) machines, due to its high torque capability, high power
density and compact size, are the most suitable candidates for in-wheel Electric Vehicle application.
However, the presence of cogging torque in AFPM machines, resulting from the interaction of PMs
and stator slots, introduces torque ripples, noise and vibrations which deteriorates the performance
of the machine. To overcome this, several techniques for cogging reduction are utilized. Out of
various techniques, rotor magnet shape variation is most commonly utilized. This paper investigates
the effect of some preferred magnet shaping techniques in AFPM machines on several performance
parameters such as magnetic flux density distribution in air gap, cogging torque, flux linkage,
no load-induced emf, emf harmonics, electromagnetic torque and torque ripple. These parameters
were analyzed using 3-D Finite Element Method (FEM) based simulations. It was found that a maximum
cogging reduction by 62.49% and output torque ripple by 63.25% were obtained by using short-pitched
and skewed rotor magnets. This also resulted in a reduction of induced emf by 14.18% and
electromagnetic torque by 15.17%.<\/p>\n\n\n\n
Inspection & Approval Certificates : C\/W Certificate (Calibration Works Certificate) EN 10204 3.1 \/ DIN 50049 3.1 \/ ISO 10474 3.1 Mill Test Certificate,
NACE HIC TM-0284 \/ NACE MR-0103 \/ NACE MR-0175 \/ ISO 15166, CE Marked, European Pressure Equipment Directive PED-2014\/68\/EU, AD-2000-WO,
ASME Boiler & Pressure Vessel Code Section-II Part A Edition 2019, API 6A (American Petroleum Institute), with 3.2 Certificate duly Certified &
Approved by IBR (Indian Boiler Regulations), LR Class (Lloyd\u2019s Register), GL (Germanischer Lloyd), BV (Bureau Veritas), DNV (Det Norske Veritas),
ABS Class (American Bureau of Shipping), SGS, TUV, RINA, IR Class (Indian Register of Shipping), NORSOK Approved Standard M-630, M-650 Rev.3<\/p>\n\n\n\n
If you have any requirement of above items, please feel free to contact us<\/p>\n\n\n\n
Regards,<\/p>\n\n\n\n
CONTACT PERSON :<\/strong><\/p>\n\n\n\n MUKESH SHAH ROLEX METAL DISTRIBUTORS CHAIRMAN \u2013 chairman@rolexmetals.com Soft Magnetic Iron For Manufacturing Rotor Disc And Stator Disc Axial flux brushless direct current motors (AFBLDC) are becoming popular in many applicationsincluding electrical vehicles because of their ability to meet the demand of high power density,high efficiency, wide speed range, robustness, low cost and less maintenance. In this paper,AFBLDC motor drive with single sided […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1703","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/rolexiron.com\/index.php\/wp-json\/wp\/v2\/pages\/1703","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rolexiron.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/rolexiron.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/rolexiron.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rolexiron.com\/index.php\/wp-json\/wp\/v2\/comments?post=1703"}],"version-history":[{"count":1,"href":"https:\/\/rolexiron.com\/index.php\/wp-json\/wp\/v2\/pages\/1703\/revisions"}],"predecessor-version":[{"id":1704,"href":"https:\/\/rolexiron.com\/index.php\/wp-json\/wp\/v2\/pages\/1703\/revisions\/1704"}],"wp:attachment":[{"href":"https:\/\/rolexiron.com\/index.php\/wp-json\/wp\/v2\/media?parent=1703"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Director
Mobile No. 0091 \u2013 9820292499
Email \u2013 marketing@rolexmetals.com<\/strong><\/p>\n\n\n\n
57-A Khatargalli
Thakurdwar
Mumbai \u2013 400 002 India
0091-22-23858802
0091-22-23823963
0091-22-23898724
marketing@rolexmetals.com
www.rolexmetals.com<\/strong><\/p>\n\n\n\n
MANAGING DIRECTOR \u2013 managingdirector@rolexmetals.com
TECHNICAL DIRECTOR \u2013 technicaldirector@rolexmetals.com
SALES DIRECTOR \u2013 salesdirector@rolexmetals.com
COMMERCIAL DIRECTOR \u2013 commercialdirector@rolexmetals.com
COMMERCIAL MANAGER \u2013 commercial@rolexmetals.com
GENERAL MANAGER \u2013 generalmanager@rolexmetals.com
SALES MANAGER \u2013 salesmanager@rolexmetals.com
PURCHASE MANAGER \u2013 purchasemanager@rolexmetals.com
TECHNICAL MANAGER \u2013 technical@rolexmetals.com
WORKS MANAGER \u2013 worksmanager@rolexmetals.com
STORES MANAGER \u2013 stores@rolexmetals.com
WAREHOUSE MANAGER \u2013 warehouse@rolexmetals.com
SALES DOMESTIC \u2013 salesdomestic@rolexmetals.com
SALES INTERNATIONAL \u2013 salesinternational@rolexmetals.com
SALES GENERAL \u2013 sales@rolexmetals.com
PURCHASE GENERAL \u2013 purchase@rolexmetals.com
FINANCE MANAGER \u2013 finance@rolexmetals.com
ACCOUNTS MANAGER \u2013 accounts@rolexmetals.com
GENERAL INFORMATION \u2013 info@rolexmetals.com
EXPORT MANAGER \u2013 export@rolexmetals.com
IMPORT MANAGER \u2013 import@rolexmetals.com
AIR EXPORT \u2013 airexport@rolexmetals.com
SEA EXPORT \u2013 seaexport@rolexmetals.com
CUSTOMS \u2013 customs@rolexmetals.com
AIR FREIGHT \u2013 airfreight@rolexmetals.com
SEA FREIGHT \u2013 seafreight@rolexmetals.com
DESPATCH \u2013 despatch@rolexmetals.com
INSPECTION \u2013 inspection@rolexmetals.com
LOGISTICS \u2013 logistics@rolexmetals.com
TRANSPORT \u2013 transport@rolexmetals.com
KALAMBOLI WAREHOUSE \u2013 kalamboli@rolexmetals.com
TALOJA WAREHOUSE \u2013 taloja@rolexmetals.com
KHOPOLI WAREHOUSE \u2013 khopoli@rolexmetals.com
NHAVA SHEVA WAREHOUSE \u2013 nhavasheva@rolexmetals.com
KANDLA WAREHOUSE \u2013 kandla@rolexmetals.com
MUMBAI WAREHOUSE \u2013 mumbai@rolexmetals.com
STOCKYARD \u2013 stockyard@rolexmetals.com
SERVICE \u2013 service@rolexmetals.com
SUPPORT \u2013 support@rolexmetals.com
RECRUITMENT \u2013 career@rolexmetals.com
WEBMASTER \u2013 webmaster@rolexmetals.com
CUSTOMER CARE \u2013 customercare@rolexmetals.com<\/p>\n","protected":false},"excerpt":{"rendered":"