using AC to AC converters without intermediate conversion to DC

Full Title

Arrangements or methods for the control of AC motors characterised by the kind of supply voltage > using variable-frequency supply voltage, e.g. inverter or converter supply voltage > using AC to AC converters without intermediate conversion to DC

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: Using AC supply for both rotor and stator circuits, the frequency of supply to at least one circuit being variable

Child Classifications

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• H02P 27/18 varying the frequency by omitting half waves