THREE-PHASE DYNAMO-ELECTRIC MACHINE

摘要

PROBLEM TO BE SOLVED: To reduce the ripples of a neutral point current flowing in a lead wire, in a dynamo-electric machine which has a neutral-point lead wire. SOLUTION: The neutral-point lead wire is provided with a neutral-point winding 20, which has an iron core (stator core 14) in common with a three- phase winding 18 of the dynamo-electric machine. The neutral point winding 20 is arranged so that the magnetic flux generated by the current flowing to this negate each other. The ripples of the current flowing in the neutral point lead wire are reduced by the reactor formed by the stator core 14 and the neutral-point winding 20. COPYRIGHT: (C)2004,JPO