Arrangements or methods for the control of AC motors characterised by the kind of supply voltage

Classification Context

Section:

ELECTRICITY

Class:

GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER

Subclass:

CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS

Scope Notes

Limiting references: Two or more motor Control of synchronous motors or other dynamo-electric motors with electronic commutators, in dependence on the rotor position Controlling the speed or torque of DC motors Controlling stepping motors

Child Classifications

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• H02P 27/02 using supply voltage with constant frequency and variable amplitude
• H02P 27/04 using variable-frequency supply voltage, e.g. inverter or converter supply voltage