摘要
介绍了三相动态电压恢复器的主电路拓扑,并结合变压器的连接方式,分析了主电路参数的设计方法,对比了变压器不同接法对参数和电路性能的影响。分别对变压器不同的连接方法进行了Matlab系统仿真,并对变压器星形连接的三相四线结构和改进的SVPWM控制方法作了实验,解决了系统中存在电压零序分量问题。仿真和实验结果验证了文中的分析和结论。
The topology of main circuit in three-phase DVR(Dynamic Voltage Restorer) is introduced.Its main circuit parameters are analyzed according to different transformer connections and the influences of different transformer connections on parameters and circuit performance are compared. The Y connection and delta connection of transformer in DVR is simulated with Matlab and the three-phase four-wire structure with Y connection is used in the experiment,which can compensate zero voltage component of source voltage by approved SVPWM algorithm. The analysis and conclusion presented have been verified by the simulative and experimental results. This project is supported by Natural Science Fund of Xi'an Jiaotong University(2002025).
出处
《电力自动化设备》
EI
CSCD
北大核心
2004年第4期19-23,共5页
Electric Power Automation Equipment
基金
西安交通大学自然科学基金资助项目(2002025)
