Rectifier section balancing structure

Claim 1

A RECTIFIER CURRENT BALANCING STRUCTURE FOR A MULTIPHASE RECTIFIER COMPRISING (A) A MULTIPHASE RECTIFIER TRANSFORMER HAVING A MULTIPHASE PRIMARY AND A MULTIPHASE SECONDARY WINDING; (B) A PLURALITY OF PARALLEL CONNECTED RECTIFIER ELEMENTS CONNECTED IN SERIES WITH EACH OF SAID SECONDARY WINDINGS: (C) A SECOND TRANSFORMER HAVING SECONDARY WINDING, EACH CONNECTED IN SERIES WITH ONE OF THE MULTIPHASE WINDINGS OF SAID MULTIPHASE RECTIFIER TRANSFORMER; (D) AND AN ADJUSTABLE VOLTAGE SOURCE CONNECTED TO THE PRIMARY WINDINGS OF SAID SECOND TRANSFORMER TO IMPRESS AN ADJUSTABLE VOLTAGE IN EACH OF SAID PHASES TO BALANCE CURRENT FLOW BETWEEN SAID PHASES; (E) EACH OF SAID ADJUSTABLE VOLTAGE SOURCES COMPRISING AN AUXILIARY MULTIPHASE TRANSFORMER WINDING AND A SERIES CONNECTED ADJUSTABLE AUTOTRANSFORMER IN SERIES WITH EACH OF THE WINDINGS OF SAID MULTIPHASE TRANSFORMER WINDING; THE SECONDARY WINDING OF EACH OF SAID AUTOTRANSFORMERS BEING CONNECTED IN SERIES WITH A RESPECTIVE PRIMARY WINDING OF SAID SECOND TRANSFORMER.