电力系统自动化2017，Vol.41Issue(22)：124-132,9.DOI:10.7500/AEPS20170318001
基于混合脉宽调制的并联并网变换器控制方法
Control Method for Parallel Grid-connected Converters Based on Hybrid Pulse Width Modulation
姜卫东 1王伟 1王金平 1王磊 1张学威1
作者信息
- 1. 合肥工业大学电气与自动化工程学院,安徽省合肥市230009
- 折叠
摘要
Abstract
The parallel three-phase grid-connected converters sharing direct current and alternating current buses can increase the system level,but the circulating current problem is inevitable.According to an analysis of the causes of the circulation,the circulation problems caused by the injection of different zero-sequence voltages are studied.A mathematical model of the circulating current is developed and a modulation scheme combining sinusoidal pulse width modulation (SPWM) and space vector pulse width modulation (SVPWM) is proposed.It is expected that the voltage utilization can be increased,the low-frequency circulation due to the injection of different zero-sequence voltages should be avoided.Finally,the experiment platform of parallel three-phase grid-connected converters is set up in the laboratory to facilitate experiments and verify the feasibility and effectiveness of the proposed modulation method.关键词
环流/并网变流器/并联/零序电压Key words
circulating current/grid-connected converters/parallel/zero-sequence voltage引用本文复制引用
姜卫东,王伟,王金平,王磊,张学威..基于混合脉宽调制的并联并网变换器控制方法[J].电力系统自动化,2017,41(22):124-132,9.
