摘要
针对三相级联H桥变换器,该文对其工作原理进行详细分析,将每一级三相H桥等效为三相三电平变换器,给出了一种扩展性较强且计算复杂度较低的简化空间矢量脉宽调制(space vector pulse width modulation,SVPWM)算法。该算法将多电平SVPWM简化为三电平SVPWM,进一步利用三电平空间电压矢量图的几何对称性,将三电平空间矢量的计算集中在一个扇区内完成。根据该简化算法,该文在单片现场可编程门阵列(FPGA)上实现三相五电平与七电平空间矢量脉宽调制。实验结果验证了该算法的正确性与可行性。
A novel simplified multilevel space vector pulse-width modulation（SVPWM） algorithm with strong scalability and low computational complexity was presented after analyzing the operation principle of three-phase cascaded H-bridge converters and considering each stage of the threephase cascaded H-bridge converter as a three-phase three-level converter.The presented algorithm simplifies multilevel SVPWM to three-level SVPWM and completes the computation of three-level SVPWM in one sector because of the geometrical symmetry of six sectors.This paper realized the three phase five-level and seven-level SVPWM on a single field programmable gate array（FPGA）.Experimental results are given to verify correctness and feasibility of the presented algorithm.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2016年第10期2753-2761,共9页
Proceedings of the CSEE
基金
国家自然科学基金项目(51207131
51277153
51577160)
国家自然基金高铁联合基金项目(U1134205
U1434203)~~
关键词
三相级联H桥
空间矢量脉宽调制
现场可编程门阵列
three-phase cascaded H-bridge
space vector pulse width modulation（SVPWM）
field programmable gate array
