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《Journal of Anqing Normal University(Natural Science Edition)》 2018-02
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Applied Method of High Voltage Ride-through for Photovoltaic Inverter

ZHOU Cheng;JIANG Hongling;DAI Xinrong;XIE Fang;Anhui Institute of International Business;Anhui & Huaihe River Institute of Hydraulic Research;Collaborative Innovative Center of Industrial Energy-saving and Power Quality Control,Anhui University;  
In view of the over modulation problems that may occur during the high voltage crossing of the photovoltaic inverter, the high voltage crossing technology of power grid voltage swell is analyzed. Determine whether the current system is over modulation by judging the size of the DC voltage. Two kinds of possible over modulation conditions are analyzed. In order to suppress the over modulation problem, a method of lifting the DC side voltage is given. A high voltage crossing experiment platform was set up to carry out the experiment. The experimental results show that the method effectively suppress the over modulation and improves the controllability margin and stability of the system.
【Fund】: 安徽大学博士启动经费(J01001961);; 安徽省教育厅自然科学研究重点项目(KJ2017A861);; 国家青年自然科学基金项目(51607002)
【CateGory Index】: TM464
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