Traction Inverter Multi-Section Synchronous SVPWM Strategy FPGA Program Design and Implementation
Han Kun1, Song Yuming1, Yu Bin1, Jiang Wei2, Feng Xiaoyun1
1. School of Electrical Engineering Southwest Jiaotong University Chengdu 610031 China; 2. Locomotive & Car Research Institute China Academy of Railway Sciences Beijing 100081 China;
Abstract：Due to low switching frequency of high-power traction drive system, in wide operation range of train, multi-mode modulation algorithm is widely adopted in the traction inverters. This paper presents a multi-mode modulation algorithm based on selective harmonic elimination pulse width modulation (SHEPWM) and studies the smooth switching method between different modulation modes. After that, a design and realization scheme of this modulation algorithm based on FPGA is given in detail, and the top-level design logic and communication method between DSP and FPGA chips are analyzed. Finally, the hardware-in-loop (HIL) RT-LAB experiment platform with DSP (TMS320F28335) + FPGA (SPARTAN XC3S400) controllers has been designed and developed, and the FPGA implementation scheme of multi-mode modulation algorithm is shown. HIL experimental results have verified the correctness of the adopted multi-mode modulation algorithm and the feasibility of the FPGA design.
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2019, Vol. 34 
