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- W2003245089 abstract "This paper deals with active circuits for cancellation and compensation of common-mode voltage caused by a PWM inverter. A nonnegligible amount of leakage or ground current flows through stray capacitors between stator windings and the motor frame due to a large step change in the common-mode voltage at every switching operation of the PWM inverter. First, it is shown experimentally that the active common-noise canceler (ACC), which has been proposed by the authors, is effective in reducing not only conducted EMI but also motor shaft voltage and bearing current. Next, a new ACC characterized by an isolated power supply is developed to enlarge the applicable voltage range in which it is possible to integrate the ACC with a PWM inverter. Furthermore, the authors propose another type of ACC, the purpose of which is not to achieve complete cancellation but to restrain only a slope in a change of the common-mode voltage applied to the motor. As a result, the core size of the common-mode transformer used in the active compensating circuit becomes considerably smaller. Some experimental results show good effects of the proposed active circuits on both ground current and conducted EMI. © 2001 Scripta Technica, Electr Eng Jpn, 137(1): 57–65, 2001" @default.
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- W2003245089 date "2001-01-01" @default.
- W2003245089 modified "2023-09-25" @default.
- W2003245089 title "Configurations and characteristics of active canceling and compensating circuits for reducing common-mode voltage generated by voltage-source PWM inverters" @default.
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- W2003245089 doi "https://doi.org/10.1002/eej.1081" @default.
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