Self-symmetrising supply system has semiconducting switches in sub-converters that are loaded voltage symmetrically without active regulation or additional circuitry

摘要

The supply system has a frequency converter and a transformer with several similar converter modules, each with two sub-converters (F11,F12,..) in the form of 4-Q circuits and at least one transformer each, whereby the number of primary windings corresp. to the number of sub-converters and the primary windings are inductively coupled together and have good coupling to the single secondary per transformer. Semiconducting switches in the sub-converters are loaded voltage symmetrically without active regulation or additional circuitry.