Variable-voltage and variable-frequency power converter

Details Variable-voltage and variable-frequency power converter Variable-voltage and variable-frequency power converter

1990-03-30

1991-07-09

Wong, Peter S.

Electric power conversion systems

Current conversion

Having plural converters for single conversion

363 96, 363136, H02M 7521

Patent

active

050310887

ABSTRACT:
A power converter for supplying an AC load with a sum of an output voltage of multiplexed PWM inverters each having an output transformer, and an output voltage from a direct-connection PWM inverter having no output transformer. One or a plurality of PWM inverters constituting the multiplexed PWM inverters comprise a circuit for controlling primary or exciting currents of corresponding output transformers connected thereto, and the direct-connection PWM inverter comprises a circuit for controlling a current to be supplied to the AC load.

REFERENCES:
patent: 4674025 (1987-06-01), Edwards
patent: 4698739 (1987-10-01), Paice
patent: 4717998 (1988-01-01), Cheron et al.
patent: 4802079 (1989-01-01), Mizoguchi

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