中国电机工程学报2016，Vol.36Issue(13)：3565-3572,8.DOI:10.13334/j.0258-8013.pcsee.151561
中点钳位型H桥级联单相变换器均压SVPWM最优工作点转移路径研究
An Optimal SVPWM Transition Path for Voltage Equalization in NPC Cascade H-bridge Single-phase Inverters
舒泽亮 1马伟天 1柳明 1陈亚军 1何晓琼1
作者信息
- 1. 西南交通大学电气工程学院，四川省成都市 610031
- 折叠
摘要
Abstract
An space vector pulse width modulation (SVPWM) modulation was proposed to solve the problem of DC voltage imbalance in the single-phase cascaded neutral-point-clamped H-bridge inverter. To avoid the harm of module port voltage level-skip, the transition states were introduced in the redundant vector selection, which made the current vector gradually switching to the vector with the strongest voltage balance ability, and reduced the switching frequency of the converter. The selection method of the optimal transition was given. Meanwhile, a digital SVPWM algorithm based on the programmable logic device was designed. Finally, the experimental results of two-cascade-module based prototype were presented to verify the voltage balance ability and the steady-state and dynamic performances of this modulation strategy.关键词
H桥级联变换器/中点钳位/最优路径转移/电平越级跳变/空间矢量调制Key words
cascaded H-bridge inverter/neutral point clamped converter (NPC)/optimal transition path/voltage level-skip/space vector pulse width modulation (SVPWM)分类
信息技术与安全科学引用本文复制引用
舒泽亮,马伟天,柳明,陈亚军,何晓琼..中点钳位型H桥级联单相变换器均压SVPWM最优工作点转移路径研究[J].中国电机工程学报,2016,36(13):3565-3572,8.
