METHOD FOR EQUAL CURRENT DISTRIBUTION IN MULTI-CHANNEL PULSE VOLTAGE CONVERTER Russian patent published in 2012 - IPC G05F1/56 

FIELD: electricity.

SUBSTANCE: at parallel operation channels are synchronised by sync signals which are generated with shift equal to timing cycle duration divided by number of channels operating in parallel; in each converter channel error signal is generated as difference of signals of output and preset voltage and current choke variable component is determined as difference between measured choke current and load current divided by number of channels operating in parallel; sweep waveform is generated; signal for switching of the key element is generated by sync signal and sum of error signal and signal proportional to variable component of choke current and sweep waveform; at that measured value of choke current is determined as average value of choke current for timing cycle duration and sweep waveform is generated as sum of sawtooth wave with amplitude proportional to difference of voltage values fed to choke before and after key element switching and shift signal proportional to voltage supplied to choke after switching of the key element.

EFFECT: maintenance of equal current distribution in multi-channel pulse voltage converter when unstable values of choke inductance are available in channels of the converter.

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