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| Common Mode Prediction on Cable Shielded Drive System in Electric Vehicle |
| Sun Tielei1, 2, Lin Cheng1, Cao Wanke2 |
| 1.Beijing Institute of Technology Beijing 100081 China 2.China Life Property and Casualty Insurance Company Beijing 100033 China |
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Abstract A typical PWM variable-speed AC motor drive is studied in order to investigate the conducted electromagnetic interference (EMI) at both the input and output sides of the drive. High frequency equivalent circuit for the drive system which the cable are shielded are proposed. The noise path required parasitic components extraction are implemented through theoretical analysis and experimental method. High frequency EMI source models are presented to consider PWM switching rise-time modeling. The overall circuit models for common-mode EMI prediction are obtained. The proposed method is verified by comparing the predicted spectrum with experimental tests.
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Received: 06 October 2010
Published: 19 March 2014
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2012, Vol. 27 
