Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1984-06-22
1986-03-04
Salce, Patrick
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
363 97, H02P 540
Patent
active
045743401
ABSTRACT:
A multiple phase electronic inverter circuit includes a transistor bridge output circuit having a pair of series connected transistors in each output phase leg connected between a pair of conductors for supplying direct current to opposite ends of the phase leg with a connection point between the transistors of each phase leg serving as an output power pole. A waveform pattern generator generates a transistor switching pattern which causes the transistors to alternate between two complementary operating modes such that one transistor in each phase leg functions in a communication mode and the other transistor in that phase leg functions in a non-commutation mode. By switching between the two operating modes, saturation of controlled current feedback transformers in the base drive circuit of each transistor is prevented.
REFERENCES:
patent: 3412316 (1968-11-01), Kernick
patent: 3715648 (1973-02-01), Kernick et al.
patent: 3967173 (1976-06-01), Stich
patent: 4259620 (1981-03-01), Oates et al.
patent: 4342076 (1982-07-01), Rosswurm et al.
patent: 4377779 (1983-03-01), Plunkett
patent: 4409534 (1983-10-01), Bose
Lenart R. P.
Rebsch D. L.
Salce Patrick
Westinghouse Electric Corp.
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