IPC 6 English version H02P 9/00-H02P 21/00

H02P00900-H02P02100

SECTION H– ELECTRICITY

H 02

GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

H 02 P

CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS (structure of the starter, brake, or other control devices, see the relevant subclasses, e.g. mechanical brake F 16 D, mechanical speed regulator G 05 D, variable resistor H 01 C, starter switch H 01 H; systems for regulating electric or magnetic variables using transformers, reactors or choke coils G 05 F; arrangements structurally associated with motors, generators, dynamo-electric converters, transformers, reactors or choke coils, see the relevant subclasses, e.g. H 01 F, H 02 K; connection or control of one generator, transformer, reactor, choke coil, or dynamo-electric converter with regard to conjoint operation with similar or other source of supply H 02 J; control or regulation of static converters H 02 M) [4]

Arrangements for controlling electric generators for the purpose of obtaining a desired output (Ward-Leonard arrangements H 02 P 7/34; feeding a network by two or more generators H 02 J; for charging batteries H 02 J 7/14)

Details

Control effected upon non-electric prime mover and dependent upon electric output value of the generator (effecting control of the prime mover in general, see the relevant class for such prime mover) [2]

Control effected upon clutch or other mechanical power transmission means and dependent upon electric output value of the generator (effecting control of the power transmission means, see the relevant class for such means) [2]

Control of generator circuit during starting or stopping of driving means, e.g. for initiating excitation [2]

Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load [2]

for demagnetising; for reducing effects of remanence; for preventing pole reversal [2]

by variation of field (H 02 P 9/08, H 02 P 9/10 take precedence) [2]

due to variation of ohmic resistance in field circuit, using resistances switched in or out of circuit step by step

the switching being caused by a servomotor, measuring instrument, or relay

due to variation of continuously-variable ohmic resistance

comprising carbon pile resistance

due to variation of make-to-break ratio of intermittently-operating contacts, e.g. using Tirrill regulator

using discharge tubes or semiconductor devices (H 02 P 9/34 takes precedence) [2]

using discharge tubes

using semiconductor devices

using magnetic devices with controllable degree of saturation (H 02 P 9/34 takes precedence) [2]

using magnetic devices with controllable degree of saturation in combination with controlled discharge tube or controlled semiconductor device

using armature-reaction-excited machines

Self-excitation by current derived from rectification of both output voltage and output current of generator

by variation of reluctance of magnetic circuit of generator

to obtain desired frequency without varying speed of the generator

Control of frequency and voltage in predetermined relation, e.g. constant ratio

Control of asynchronous generator by variation of capacitor

Arrangements for obtaining a constant output value at varying speed of the generator, e.g. on vehicle (H 02 P 9/04 to H 02 P 9/46 take precedence) [3]

11/

Arrangements for controlling dynamo-electric converters (starting H 02 P 1/00; stopping or slowing H 02 P 3/00; feeding a network in conjunction with a generator or another converter H 02 J) [4]

11/

for controlling dynamo-electric converters having a dc output

11/

for controlling dynamo-electric converters having an ac output

13/

Arrangements for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output (regulation systems using transformers, reactors or choke coils G 05 F; transformers H 01 F; feeding a network in conjunction with a generator or a converter H 02 J; control or regulation of converters H 02 M) [4]

13/

by tap-changing; by rearranging interconnections of windings

13/

by sliding current collector along winding

13/

by moving core, coil winding, or shield, e.g. by induction regulator

13/

by varying magnetic bias

15/

Arrangements for controlling dynamo-electric brakes or clutches (controlling speed of dynamo-electric motors by means of a separate brake H 02 P 5/00, H 02 P 7/00)

15/

Conjoint control of brakes and clutches [3]

17/

Arrangements for controlling dynamo-electric gears [3]

19/

Arrangements according to more than one of groups H 02 P 1/00, H 02 P 3/00, H 02 P 5/00 or H 02 P 7/00 [5]

19/

Providing protection against overload without automatic interruption of supply (emergency protective circuit arrangements with automatic interruption of supply H 02 H 7/08, without disconnection, in general H 02 H 9/02) [6]

21/

Arrangements for control or regulation of electric motors by control of field orientation; Vector control [6]

H02P 6/00 - H02P 8/42