An electrical converter system employing a control converter for controlling the operation of a power converter

Claim 1

A converter system, comprising, a first and second converter, each of said converters generating output waveforms in response to firing pulses, a main voltage source, said second converter being coupled to said main voltage source, a reference voltage source, said first converter connected to receive potential from said main voltage source and coupled to said reference voltage source to generate firing pulses as a function of the reference voltage waveform, switching means associated with said first converter, said switching means are operated by the firing pulses of said first converter, said switching means initiating the firing pulses of said second converter, said second converter reproducing the output waveform of the first converter at a desired power level; said first converter including first means for determining the average value of the output waveform of said first converter, second means for determining the average value of said reference waveform, and third means for producing said first converter firing pulses when the average value of said reference waveform and the average of said first converter output waveform approximate a predetermined relationship.