A Low-Voltage Ride-Through Strategy for Three-Phase Distributed Generation Inverters During Voltage Sags

被引：0
|
作者：
Nie Xiong [1 ]
Xie Yunxiang [1 ]
Chen Bing [2 ]
Zhang Xiaoyu [1 ]
Hei Chenyang [1 ]
Zeng Zhiwu [1 ]
机构：
[1] South China Univ Technol, Sch Elect Power, Guangzhou, Guangdong, Peoples R China
[2] Jiangsu Elect Power Co, Jiangsu Elect Power Co Res Inst, Nanjing, Jiangsu, Peoples R China
来源：
2016 IEEE 8TH INTERNATIONAL POWER ELECTRONICS AND MOTION CONTROL CONFERENCE (IPEMC-ECCE ASIA) | 2016年
关键词：
distributed generation; low-voltage ride-through; voltage sag; active power control;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Asymmetric voltage sag occurs in the actual operation of the power grid, and the negative sequence component of the voltage will result in the output power fluctuation and the three-phase current distortion. At the same time, the decrease of voltage amplitude will make the peak value of the output current increased, and then bring the safety hazard to the PV system. A control strategy based on the low voltage ride through capability of photovoltaic inverter is presented. The control strategy is used when the grid voltage drops, which can limit the increase of active current. At the same time, the reactive current is injected to support the grid. The simulation and experimental results verify the feasibility of the proposed control method.
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页数：6
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