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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2006, Vol. 7 Issue (6 ): 18-    DOI: 10.1631/jzus.2006.A1051
    
A 6-switch single-phase 5-level current-source inverter
BAO Jian-yu, LI Yu-ling, ZHANG Zhong-chao
School of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
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Abstract  The new 6-switch single-phase 5-level current-source inverter proposed in this paper was developed by properly simplifying the traditional 8-switch single-phase 5-level current-source inverter, and its operational principle was analyzed. Just like the problem of voltage-unbalance between different levels existing in voltage-source multilevel inverters, a similar problem of current-unbalance between different levels whether for the 8-switch single-phase 5-level current-source inverter, or for the new 6-switch 5-level current-source inverter also exists. A simple current-balance control method via DC current feedback is presented here to implement the current-balance control between different levels. And to reduce the output current harmonics, PWM control technique was used. Simulation and experimental results showed that this new 6-switch topology operates correctly and that the balance-inductor can almost equally distribute the total DC current.

Key words： Single-phase      Current-source inverter (CSI)      Multilevel      Topology     
Received: 01 September 2005     
CLC:  TM464  
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BAO Jian-yu
LI Yu-ling
ZHANG Zhong-chao
Cite this article:

BAO Jian-yu, LI Yu-ling, ZHANG Zhong-chao. A 6-switch single-phase 5-level current-source inverter. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2006, 7(6 ): 18-.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2006.A1051     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2006/V7/I6 /18

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