An On-Line Calculation Multi-Mode SVPWM Algorithm and Implementation Based on FPGA
Wu Xiajie1, Song Wensheng1, Feng Xiaoyun1,2
1. School of Electrical Engineering Southwest Jiaotong University Chengdu 610031 China; 2. State Key Laboratory of Traction Power Southwest Jiaotong University Chengdu 610031 China
Abstract：Due to the low switching frequency in high power AC electrical locomotive, multi-mode modulation algorithm is widely adopted for traction inverter in the whole speed range. A new on-line calculation multi-mode space vector pulse width modulation (SVPWM) is adopted for two-level diode neutral point clamped (NPC) inverter, and the switching method between different modes is studied. Then, based on field programmable gate array (FPGA), the implementation scheme is presented, with the features of high speed, high reliability and reuse-ability. As a result, digital signal processors (DSP) can be relieved from heavy computation task through the simplified design of multiplier, square root units and divider. Finally, by virtue of hardware-in-loop (HIL) experimental system based on DSP-FPGA controller and RT-LAB platform, the accuracy of the on-line calculation multi-mode SVPWM algorithm and the feasibility of the implementation scheme are verified.
吴瑕杰, 宋文胜, 冯晓云. 一种在线计算多模式空间矢量调制算法及其FPGA实现[J]. 电工技术学报, 2016, 31(18): 124-133.
Wu Xiajie, Song Wensheng, Feng Xiaoyun. An On-Line Calculation Multi-Mode SVPWM Algorithm and Implementation Based on FPGA. Transactions of China Electrotechnical Society, 2016, 31(18): 124-133.
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2016, Vol. 31 
