Rotary phase converter

Details Rotary phase converter Rotary phase converter

H - Electricity

02

P

321/120

H02P 1/00 (2006.01)

Patent

CA 1125369

ROTARY PHASE CONVERTER Abstract of the Disclosure A rotary phase converter for connection to a single-phase a.c. power source and acapted to supply polyphase current to a polyphase electrical load. The converter includes a dynamoelectric machine having at least three stator windings and at least first, second and third output terminals, an autotransformer and at least one capacitor. The stator windings of the dyna- moelectric machine are oriented symmetrically with re- spect to each other both physically and electrically and each has a substantially equal number of active turns. The first and second terminals of the dynamoelectric machine are adapted to be connected to the single-phase a.c. power source and they are also outputs of the converter. The autotransformer is connected across the second and third terminals and has at least one tap positioned intermediate the ends thereof to serve as an output of the converter. The capacitor is connected between the first output terminal and the autotransformer tap serving as a converter output. The currents supplied from the converter outputs to the phases of the polyphase load. are maintained substantially balanced at full load.

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