Static frequency converter

Details Static frequency converter Static frequency converter

1980-01-15

1981-07-28

Pellinen, A. D.

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363141, 363160, H02M 527

Patent

active

042813751

ABSTRACT:
A natural commutation static frequency converter including a polyphase cycloconverter and its control circuit, a switching device enabling breaking of inputs of two Graetz bridges of at least one of monophase cycloconverters, as well as breaking of outputs of the bridges which are not connected to neutral point. The switching device results in insertion of a self-inductance between opened outputs of the Graetz bridges, and replacement of the control circuit of cycloconverter with a natural commutation rectifier-inverter control circuit, so as to form at least one natural commutation rectifier-inverter. The switching device further enables replacement of the outputs of the polyphase cycloconverter with the outputs of at least one rectifier-inverter so formed. The converter may be used to supply a synchronous motor.

REFERENCES:
patent: 3742336 (1973-06-01), Bedford

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