五电平ANPC变换器低次谐波共模电压消除双矢量模型预测控制

Chang Liu, Xiaoyan Li, Xiangyang Xing, Ying Jiang, Rui Zhang, Chenghui Zhang
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引用次数: 1

摘要

针对五电平有源中性点箝位(5L-ANPC)变换器的低次谐波共模电压消除问题,提出了一种新的双矢量模型预测控制(DC-MPC)。首先,通过对5L-ANPC的所有可能电压矢量进行分析,从产生零CMV的125个电压矢量中选择19个作为候选电压矢量。然后,从候选电压矢量中选择两个最优电压矢量,并计算其最优间隔,以减小电流纹波。此外,双选电压矢量的适当开关组合可以有效地平衡飞行和直流电容电压,而无需加权因子。最后,通过仿真结果验证了所提MPC策略的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Double-Vector Model Predictive Control for Lower Harmonics with Common-Mode Voltage Elimination in Five-Level ANPC Converter
A novel double vector model predictive control (DC-MPC) for lower harmonics with common-mode voltage (CMV) elimination in five-level active neutral-point-clamped (5L-ANPC) converter without weighting factors is proposed in this paper. Firstly, by analyzing all the possible voltage vectors of 5L-ANPC, 19 of the 125 voltage vectors which generate zero CMV are selected as the candidate voltage vectors for the proposed MPC. Then, two optimal voltage vectors of the candidate voltage vectors are selected and its optimal intervals are calculated to reduce the current ripple. In addition, appropriate switching combinations of double selected voltage vectors to balance flying and dc-link capacitor voltages effectively without weighting factors. Finally, the effectiveness of the proposed MPC strategy are verified with simulated results.
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