Research on the Control Technique of Low Voltage Ride-through for Grid-connected Photovoltaic Inverter

摘要：

　　According to the new requirements of large-capacity MW solar power station, this paper establishes a mathematical model of the inverter, analyzes the drawbacks of synchronous reference frame phase-locked loop in low voltage ride through, improves the performance of decoupled dual synchronous reference frame phase locked loop and designs the proportional integral controller parameters. It uses the feed-forward decoupling, grid voltage feed-forward control and coordinated control in current control loop. The experiment results show that the proposed control techniques can make the three-phase photovoltaic grid-connected inverter operate stably and reliably under low voltage ride through condition, and make the inverter meet the relevant standard requirements. This proves the validity and feasibility of the proposed control technologies.

关键词： low voltage ride through(LVRT) grid-connected inverter phase-locked loop(PLL) voltage feed-forward control feed-forward decoupling coordinated control

作者: Ying Zhang Dufeng Cao Zilong Yang Yibo Wang Honghua Xu

作者单位: Institute of Electrical Engineering,CAS,Beijing,China

会议类型: 国际会议

会议名称: 2016中国国际供电会议(CICED2016)

会议地点: 西安

会议语种:英文

页码: 1-5

在线出版日期: 2016-09-01（万方平台首次上网日期，不代表论文的发表时间）