电力系统及其自动化学报2019，Vol.31Issue(1)：25-30,6.DOI:10.3969/j.issn.1003-8930.2019.01.005
CHB逆变器移幅载波调制法及其功率均衡控制策略
Amplitude Shifted Carrier Modulation Method and Its Power Balance Control Strategy for CHB Inverter
李宋 1肖云煌2
作者信息
- 1. 华东交通大学电气与自动化工程学院,南昌 330013
- 2. 广州地铁集团有限公司运营事业总部,广州 510310
- 折叠
摘要
Abstract
In consideration of the problem of power imbalance in the amplitude shifted carrier modulation for cascaded H-bridge(CHB)multilevel inverter,two different power balance control strategies are proposed,in which 1/4 output cycles and the nearby intervals of uplink/downlink carriers are commuted,respectively. The switching frequency and turn-on time of power devices in different H-bridge cells can approach each other through changing the arrangement of triangular carriers. The output voltage waveform of each H-bridge cell is adjusted,such that the power balance among H-bridge cells in one output cycle can be achieved while guaranteeing the quality of output waveform. The two new mod?ulation strategies are analyzed and compared in detail,and simulation results verify the validity of the two balance strat?egies.关键词
级联型多电平逆变器/移幅载波调制法/功率均衡控制Key words
cascaded multilevel inverter/amplitude shifted carrier modulation method/power balance control分类
信息技术与安全科学引用本文复制引用
李宋,肖云煌..CHB逆变器移幅载波调制法及其功率均衡控制策略[J].电力系统及其自动化学报,2019,31(1):25-30,6.
