Patent ID: 8351229

Claim:
An electric power system for balancing the output currents of a plurality of power channels serving a common load, the electric power system comprising: a plurality of power channels; each power channel including a DC-link coupled between an AC-to-DC converter with power factor correction and an isolated DC-to-DC converter, a PWM modulator, an isolated output voltage regulation controller, and a current sharing controller; a power output of each DC-to-DC converter connected in parallel across a common load; a voltage signal bus shared by each of the current sharing controllers, said bus operable to share a dominant reference voltage signal of one voltage regulation controller; a current signal bus shared by each of the current sharing controllers, said bus operable to share a reference current signal derived from currents sensed at each DC-to-DC converter output; and, each current sharing controller having an output derived from the reference current signal, the dominant reference voltage signal, and the current sensed at a respective DC-to-DC converter output, said current sharing controller output being coupled to a respective PWM modulator by an electrically isolated signal path.