Patent ID: 6166513
Filing Date: 2000-12-26
Classification: H02M,H02P

Abstract:
A four quadrant AC power drive for a multi-phase AC load comprising:a. a multi-phase power transformer having at least one primary winding circuit and a plurality of secondary winding circuits, said primary winding circuit electrically connectable to a multi-phase AC power source;b. said plurality of power cells each having an input rectifier portion connected to a respective one of said plurality of secondary winding circuits, a capacitor portion fed from said rectifier portion and an inverter portion converting DC power between said capacitor portion and a single phase adjustable frequency output;c. said plurality of power cells each being serially connected with respective other ones of said plurality of power cells to feed said multi-phase AC load; andd. a plurality of regenerative bridge converters connected to respective ones of said plurality of power cells to feed power from said capacitor portion back into said AC source in a regeneration mode.