Electric power conversion systems – Current conversion – Having plural converters for single conversion
Patent
1989-11-03
1990-08-28
Beha, Jr., William H.
Electric power conversion systems
Current conversion
Having plural converters for single conversion
307 46, 307 82, 363 43, H02M 777
Patent
active
049530712
ABSTRACT:
A novel electrical inverter includes a source of direct current (DC) signals, a plurality, N, of addressable electrical switching devices where N does not equal two configured in parallel to receive signals from the DC source. The electrical switching devices generate a plurality of output signals phased relative to one another. An output transformer has a plurality of parallel configured input inverter winding sets for receiving and transforming a respective one of the phased electrical switching device output signals, and a plurality of serially configured output winding sets providing three phased fundamental signals as the sum of the transformed signals. The inverter is characterized by an auxiliary excitation circuit having a plurality of low voltage AC signal sources each configured with auxiliary winding sets and a series reactor and each for providing excitation signals to a plurality auxiliary winding sets each configured in parallel with and identical to a respective one of said output transformer input winding sets.
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Beha Jr. William H.
International Fuel Cells, Inc.
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