RECTIFIER CONTROLLED ELECTRIC ROTATING OR TRAVELING FIELD MACHINE

摘要

Drive arrangement consisting of an electrical rotating field or traveling field machine operated with variable angular or linear speed from an A.C. or D.C. current source through rectifier comprising a rectifier for energizing the windings of the electrical machine which produces three A.C. currents, each with a superimposed D.C. current, forming a three phase system, the stator winding of the electrical rotating field machine being so built that each of the two winding conductors or conducting rods in a slot carries an A.C. current with a superimposed D.C. current with the D.C. current components flowing in opposite directions and the ampere turns produced by the D.C. current components cancelling each other out, the A.C. current components, however, cooperating to produce a rotating or traveling field.