IPC 7 English version H02K 9/00-H02K 19/38

IPC ⁷ English version

H02K - H02K 7/20

H02K00900-H02K01938

H02K 21/00 - H02K 31/04

SECTION H – ELECTRICITY

H 02

GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

H 02 K

DYNAMO-ELECTRIC MACHINES (measuring instruments G01; dynamo-electric relays H01H 53/00; conversion of dc or ac input power into surge output power H02M 9/00; loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers H04R)

Systems for cooling or ventilating (channels or ducts in parts of the magnetic circuit H02K 1/20, H02K 1/32; channels or ducts in or between conductors H02K 3/22, H02K 3/24)

by ambient air flowing through the machine

having means for generating flow of cooling medium, e.g. having fan

with fan or impeller driven by the machine shaft

by gaseous cooling medium circulating wholly within the machine casing (H02K 9/10 takes precedence)

by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing

wherein the cooling medium circulates freely within the casing

wherein gaseous cooling medium circulates between the machine casing and a surrounding mantle

wherein the cooling medium circulates through ducts or tubes within the casing

wherein the external part of the closed circuit comprises a heat exchanger structurally associated with the machine casing

for machines with closed casing and with closed-circuit cooling using a liquid cooling medium, e.g. oil

193

with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium

197

in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator

wherein the cooling medium vaporises within the machine casing

by solid heat conducting material embedded in, or arranged in contact with, stator or rotor, e.g. heat bridge

Protection against failure of cooling arrangements, e.g. due to loss of cooling medium, due to interruption of the circulation of cooling medium (circuit arrangements affording such protection H02H 7/00)

Structural association with machine of devices for cleaning or drying cooling medium, e.g. of filter

Cooling of commutators, slip-rings, or brushes, e.g. by ventilating (current collectors in general H01R 39/00)

11/

Structural association with measuring or protective devices or electric components, e.g. with resistor, with switch, with suppressor for radio interference

11/

for suppression of radio interference [6]

11/

for rectification [6]

13/

Structural associations of current collectors with motors or generators, e.g. brush mounting plates, connections to windings (supporting or protecting brushes or brush holders in motor casings or enclosures H02K 5/14); Disposition of current collectors in motors or generators; Arrangements for improving commutation

13/

Connections of slip-rings with the winding

13/

Connections of commutator segments with the winding

13/

Resistive connections between winding and commutator segments, e.g. by high-resistance choke, by transistor

13/

Segments formed by extensions of winding

13/

Special arrangements of brushes or commutators for the purpose of improving commutation

13/

Means for producing an axial reciprocation of the rotor and its associated current collector part, e.g. for polishing commutator surface

13/

Circuit arrangements for improvement of commutation, e.g. by use of unidirectionally conductive element

15/

Methods or apparatus specially adapted for manufacturing, assembling, maintaining, or repairing dynamo-electric machines (manufacture of current collectors in general H01R 43/00)

15/

of stator or rotor bodies

15/

having permanent magnets [5]

15/

of windings, prior to mounting into the machine (insulating windings H02K 15/10, H02K 15/12; coil manufacture in general H01F 41/02)

15/

Embedding prefabricated windings in the machine

15/

Forming windings by laying conductors into or around core part

15/

085

by laying conductors into slotted stators

15/

by laying conductors into slotted rotors

15/

095

by laying conductors around salient poles

15/

Applying solid insulation to the windings, the stator, or the rotor

15/

Impregnating, heating or drying of windings, stators, rotors, or machines

15/

Casings; Enclosures; Supports

15/

Centering the rotor within the stator; Balancing the rotor (balancing in general G01M)

16/

Machines with more than one rotor or stator [2]

16/

Machines with one stator and two rotors [2]

16/

Machines with one rotor and two stators [2]

Note

Group H02K 16/00 takes precedence over groups H02K 17/00 to H02K 53/00. [2]

17/

Asynchronous induction motors; Asynchronous induction generators

17/

Asynchronous induction motors

17/

for single phase current

17/

having windings arranged for permitting pole-changing

17/

Motors with auxiliary phase obtained by externally fed auxiliary winding, e.g. capacitor motor

17/

Motors with auxiliary phase obtained by split-pole carrying short-circuited winding

17/

for multi-phase current

17/

having windings arranged for permitting pole-changing

17/

having rotor with internally short-circuited windings, e.g. cage rotor

17/

having double- or multiple-cage rotor

17/

having deep-bar rotor

17/

having rotor with windings connected to slip-rings

17/

in which both stator and rotor are fed with ac

17/

having rotor or stator designed to permit synchronous operation

17/

having compensating winding for improving phase angle

17/

Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the motor, e.g. with impedance, with switch (control arrangements external to the motor H02P)

17/

Structural association with auxiliary mechanical devices, e.g. clutch, brake (control arrangements external to the motor H02P)

17/

Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter (control of cascade arrangements H02P)

17/

with another asynchronous induction motor

17/

with a commutator machine

17/

with a rotary ac/dc converter (cascade ac/dc converters H02K 47/06)

17/

Asynchronous induction generators (H02K 17/02 takes precedence) [4]

17/

Structural association with exciting machine

19/

Synchronous motors or generators (having permanent magnet H02K 21/00)

19/

Synchronous motors

19/

for single-phase current

19/

Motors having windings on the stator and a variable-reluctance soft-iron rotor without windings, e.g. inductor motor

19/

Motors having windings on the stator and a smooth rotor of material with large hysteresis without windings, e.g. hysteresis motor

19/

for multi-phase current

19/

characterised by the arrangement of exciting windings, e.g. for self-excitation, for compounding, for pole-changing

19/

having additional short-circuited winding for starting as an asynchronous motor

19/

Synchronous generators

19/

having windings each turn of which co-operates only with poles of one polarity, e.g. homopolar generator

19/

with variable-reluctance soft-iron rotor without winding

19/

having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generator

19/

with variable-reluctance soft-iron rotor without winding

19/

characterised by the arrangement of exciting winding

19/

for self-excitation

19/

for compounding

19/

for pole-changing

19/

Generators with two or more outputs

19/

Structural association with auxiliary electric devices influencing the characteristic of, or controlling, the generator, e.g. with impedance, with switch (control arrangements external to the generator H02P)

19/

Structural association with exciting machine

H02K - H02K 7/20

H02K 21/00 - H02K 31/04