Stepped waveform PWM inverter

Details Stepped waveform PWM inverter Stepped waveform PWM inverter

1991-06-03

1997-08-12

Cain, David C.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 43, 363 71, 363 90, 363132, H02M 112

Patent

active

056572140

ABSTRACT:
An inverter for converting DC power into AC power includes first and second subinverters having a plurality of controllable switches and three-phase outputs coupled to a summing transformer having wye and delta connected sets of primary windings and a set of secondary windings. The switches in the subinverters are controlled so that the subinverters produce first and second sets of pulse-width modulated subinverter waveforms which are summed by the summing transformer to produce the AC power in the secondary winding.

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