An Active Voltage-Balancing Method Based on Phase-Shifted PWM for Stacked Multicell Converters
An Active Voltage-Balancing Method Based on Phase-Shifted PWM for Stacked Multicell Converters
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DOI：
10.1109/tpel.2015.2439280
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发表时间：
2016-03
影响因子：
6.7
通讯作者：
A. Ghias;J. Pou;V. Agelidis
中科院分区：
文献类型：
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作者：
A. Ghias;J. Pou;V. Agelidis
本文提出并评估了一种使用相移脉冲宽度调制的堆叠多单元转换器 (SMC) 的有源电压平衡方法。该方法实现简单，可应用于任意层数的SMC。所提出的方法通过使用比例控制器修改 SMC 每个开关的占空比来平衡电容器的电压。考虑输出电流的方向和开关占空比之间的交叉效应，并用于改善电容器电压平衡。所提出的电压平衡方法的性能通过不同负载（例如线性和非线性负载）以及瞬态条件下的实验验证。
This paper proposes and evaluates an active voltage-balancing method for stacked multicell converters (SMCs) using phase-shifted pulse width modulation. The method is easy to implement and can be applied to SMCs with any number of levels. The proposed method balances the voltages of the capacitors by modifying the duty cycle of each switch of the SMC using a proportional controller. The direction of the output current and the crossed effect among the duty cycles of the switches is considered and used to improve capacitor voltage balance. The performance of the proposed voltage-balancing method is verified experimentally for different loads, such as linear and nonlinear loads, and under transient conditions.