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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2006, Vol. 7 Issue (12): 3-    DOI: 10.1631/jzus.2006.A1973
    
A new three-phase 5-level current-source inverter
BAO Jian-yu, BAI Zhi-hong, WANG Qing-song, ZHANG Zhong-chao
School of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
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Abstract  The new three-phase 5-level current-source inverter (CSI) proposed in this paper was developed by connecting three separate single-phase 5-level CSIs in series, and its operational principle was analyzed. There are two major problems existing in current-source multilevel inverters, one is the complex PWM control method (2-logic to 3-logic conversion), and the other is the problem of current-unbalance between different levels. A simple current-balance control method via DC current feedback is applied in each single-phase 5-level CSI cell to implement the current-balance control between different levels. And to reduce the output current harmonics, POD PWM control technique was used. Simulation and experimental results showed that this new three-phase 5-level CSI topology operates correctly.

Key words： Three-phase      Current-source inverter (CSI)      5-level      Harmonics      POD PWM     
Received: 20 March 2006     
CLC:  TM464  
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BAO Jian-yu
BAI Zhi-hong
WANG Qing-song
ZHANG Zhong-chao
Cite this article:

BAO Jian-yu, BAI Zhi-hong, WANG Qing-song, ZHANG Zhong-chao. A new three-phase 5-level current-source inverter. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2006, 7(12): 3-.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2006.A1973     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2006/V7/I12/3

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