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This paper discusses two different circuit configurations of the active common-noise canceler (ACC) which has been proposed by the authors. One is characterized by its DC power supply isolated from the DC link of a PWM inverter. The configuration makes it possible to integrate the ACC with a medium-voltage PWM inverter. The other compensates a partial frequency component of the common-mode voltage. The purpose is not to achieve complete cancellation, but to restrict only a slope in a change of the common-mode voltage applied to an AC motor. As a result, the core size of the common-mode transformer used in the ACC becomes considerably small. Experimental results show good effects of the proposed active circuits on both ground current and conducted EMI
power supplies to apparatus
Digital Object Identifier: 10.1109/IAS.2000.882079
Published with permission from the copyright holder. This is the institute's copy, as published in Industry Applications Conference, 2000. Conference Record of the 2000 IEEE, 8-12 Oct. 2000, Volume 3, Pages 1482-1488.
Copyright © 2000 IEEE. All rights reserved.
Industry Applications Conference