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1. 发明专利

JP5276335B2 3-phase common mode filter for motor drive machine 有权
公开(公告)号：JP5276335B2
公开(公告)日：2013-08-28
申请号：JP2008030459
申请日：2008-02-12
申请人：オークマ株式会社
发明人：準次古澤
IPC分类号： H02M1/12 , H01F37/00 , H02M7/12
摘要： PROBLEM TO BE SOLVED: To enhance the reduction effect of common mode noise components by simple constitution in a three-phase common mode filter for a motor driving machine. SOLUTION: The three-phase common mode filter for the motor driving machine is equipped with an input side neutral point detecting circuit, which detects the neutral point potential of input three-phase AC power, an output side neutral point detecting circuit, which detects the neutral point potential of output three-phase AC power, a three-phase common mode reactor, which reduces common mode noise components included in input three-phase AC power and outputs it as output three-phase AC power, a detected potential output terminal of the output side neutral point detecting circuit, and a compensating coil, which is connected between it and a detected potential output terminal of the input side neutral point detecting circuit and generates induced electromotive power for reducing the common mode noise components in a three-phase common mode reactor. COPYRIGHT: (C)2009,JPO&INPIT

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