IEEJ Transactions on Industry Applications
Online ISSN : 1348-8163
Print ISSN : 0913-6339
ISSN-L : 0913-6339
Paper
Common-mode Motor-surge-voltage Suppression Method
Kenta NaritaToshihisa Shimizu
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2016 Volume 136 Issue 9 Pages 635-645

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Abstract

On the AC motor drive system with the PWM inverter, a surge voltage appearing on the motor terminals (differential-mode motor-surge-voltage) is a serious problem. In order to reduce the surge voltage, a motor-surge-voltage suppression method using a surge suppression cable that the authors have developed has already been proposed. However, another type of motor surge voltage appearing between the motor windings and the motor frame (common-mode motor surge voltage) still remains. This paper presents a novel motor-surge-voltage suppression method using a surge suppression cable. The method enables suppression of both the differential-mode and the common-mode motor surge voltage, and its effectiveness is confirmed by the experiment. Moreover, a numerical analysis of the motor surge voltage is performed to obtain optimum parameters of the surge suppression cable for greater reduction of each.

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© 2016 by the Institute of Electrical Engineers of Japan
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