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A Novel Commutation Method of Matrix Converter Fed Induction Motor Drive Using RB-IGBT

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5 Author(s)
Kai Sun ; Dept. of Electr. Eng., Tsinghua Univ., Beijing ; Zhou, D. ; Lipei Huang ; Matsuse, K.
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This paper gives an overview of a collector-emitter voltage sign-based commutation method. This method is implemented based on the output current sign and commutation voltage polarity signals of matrix converter. All these signals are acquired by a simple unit in the drive and protection boards designed for reverse blocking insulated gate bipolar transistors (RB-IGBTs) of the matrix converter in test. Therefore, no current and/or voltage sensor is required to obtain any other commutation signals. The RB-IGBT samples used are newly developed, and one important feature is that its reverse leakage current is mostly affected by nuge. Under the same temperature condition, when nuce is negative, a positively biased nuge results in a distinct decrease of the reverse leakage current. The proposed commutation method can supply the reverse-blocked RB-IGBTs with positively biased nuge . Hence, the power losses caused by the reverse leakage current can be reduced using the proposed method. Experimental results have proved the feasibility and effectivity of this method

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Industry Applications, IEEE Transactions on  (Volume:43 ,  Issue: 3 )