Controlled three-phase rectifier with current comparison between rectifier segments

摘要

A parallel array of a plurality of controlled rectifier bridges for converting multi-phase AC current to DC. Each bridge includes a plurality of rectifier segments. One segment for each polarity of each phase of current. A sensor monitors the current and temperature at each rectifier. The sensor outputs for corresponding segments among the bridges are compared and the timing of the conduction of the rectifiers are controlled to maintain the current and temperatures among the corresponding segments in balance.