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A common mode (CM) EMI active filter for automotive induction motor drives is proposed. The active filter is useful in compensating the CM voltage at the motor input, allowing an increase of the drive reliability and a reduction of the leakage high frequency CM currents which affect the vehicle Electromagnetic Compatibility (EMC). The active filter is based on a feedback-action and it is realized...
This paper deals with the active common-mode (CM) voltage compensation in an induction motor drive where the inverter is supplied by a dc source, which is typical of vehicle applications. The CM voltage at motor terminals, creating a shaft voltage through the motor air gap with possible rise in bearing current, can endanger motor reliability and reduce its lifetime. Therefore, CM voltage filtering...
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