A Space Vector Pulse Width Modulation with Common-Mode Voltage Reduction and Capacitor Voltage Balance Control for Five-Level Active Neutral-Point-Clamped Converter
Li Junjie1, Jiang Jianguo1, Liu Yunlong2, Zhou Zhongzheng1
1. Key Laboratory of Control of Power Transmission and Conversion Ministry of Education Shanghai Jiao Tong University Shanghai 200240 China; 2. School of Mechanical Electronic & Information Engineering China University of Mining and Technology (Beijing) Beijing 100083 China;
Abstract：In order to solve the problems of common-mode voltage and capacitor voltage balance for five-level active neutral-point-clamped (ANPC) converter, a novel space vector pulse width modulation (SVPWM) algorithm based on gh coordinate is presented. The proposed SVPWM algorithm not only reduces the common-mode voltage, but also balances the capacitor voltages. First, the common-mode voltage is reduced by choosing the appropriate redundant switching states. After that, according to the floating-capacitor voltage deviations and output current directions for each phase, floating-capacitor voltages are balanced by selecting the appropriate switch combinations. Moreover, model predictive control (MPC) of neutral-point voltage is proposed. The optimal switching sequence is selected by using the receding optimization based on the cost function for all the five-segment switching sequences. Finally, the experimental results verify the validity of the proposed SVPWM algorithm.
李俊杰, 姜建国, 刘云龙, 周中正. 具有共模电压减小和电容电压平衡的五电平有源中点钳位型变换器SVPWM算法[J]. 电工技术学报, 2018, 33(13): 3109-3118.
Li Junjie, Jiang Jianguo, Liu Yunlong, Zhou Zhongzheng. A Space Vector Pulse Width Modulation with Common-Mode Voltage Reduction and Capacitor Voltage Balance Control for Five-Level Active Neutral-Point-Clamped Converter. Transactions of China Electrotechnical Society, 2018, 33(13): 3109-3118.
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2018, Vol. 33 
