A New Control Method of a Resonant Switched-Capacitor Converter and its Application to Balancing of the Split DC Voltages in a Multilevel Inverter
A New Control Method of a Resonant Switched-Capacitor Converter and its Application to Balancing of the Split DC Voltages in a Multilevel Inverter
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DOI：
10.1109/pccon.2007.372957
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发表时间：
2007-04
期刊：
影响因子：
--
通讯作者：
K. Sano;H. Fujita
中科院分区：
文献类型：
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作者：
K. Sano;H. Fujita
提出了一种用于二极管钳位式五电平逆变器直流电压分离的新型电压均衡电路。该电路基于谐振开关电容变流器(RSCC)，它由两个半桥逆变器、一个谐振电感和一个谐振电容组成。为改善RSCC的均压性能，提出了一种新的RSCC移相控制方法。结果，与基于降压-升压转换器的传统电压平衡电路相比，可以将电感的体积减小到十分之一。实验结果验证了基于RSCC的电压均衡电路的可行性。
This paper proposes a new voltage-balancing circuit for the split dc voltages in a diode-clamped five-level inverter. The proposed circuit is based on a resonant switched-capacitor converter (RSCC), which consists of two half-bridge inverters, a resonant inductor and a resonant capacitor. A new phase-shift control of the RSCC is proposed to improve voltage balancing performance. As a result, it is possible to reduce the inductor to one tenth in volume as compared to a conventional voltage-balancing circuit based on a buck-boost converter. Experimental results are shown to verify the viability of the RSCC-based voltage balancing circuit.