五电平变换器直流电压控制策略

APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285) Pub Date : 1999-03-14 DOI:10.1109/APEC.1999.749731

K. Matsuse, K. Sugita, T. Ishida, Lipei Huang, K. Sasagawa

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引用次数: 57

摘要

本文介绍了一种考虑直流电容平衡问题的二极管箝位三相五电平PWM功率变换器的控制方法。该控制电路采用多频带迟滞比较器(MHCs)来简化主电路的控制。通过改变MHC的形状，解决了直流链路电容平衡问题。该方法可以:(1)克服直流电容器的电压不平衡;(2)实现统一的功率因数;(3)产生近正弦输入电流;(4)将电能再生回电力系统。仿真和实验结果验证了该方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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DC voltage control strategy for a five-level converter

This paper describes a control method for a diode-clamped three-phase five-level PWM power converter considering the DC-link capacitor balancing problem. The proposed control circuit uses multiband hysteresis comparators (MHCs) to simplify the control of the main circuit. The DC-link capacitor balancing problem is solved by changing the shape of the MHC. The proposed method can: (1) overcome voltage imbalance in the DC capacitors; (2) achieve unity power factor; (3) generate nearly sinusoidal input currents; and (4) regenerate electric power back to the power system. Simulation and experimental results demonstrate the validity of the proposed method.

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APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285)

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