光伏组件热斑诊断及模糊优化控制方法_吴春华.pdf

DOI:10.13334/j.0258-8013.pcsee.2013.36.011 33 36 Vol.33 No.36 Dec.25, 2013 50 2013 12 25 Proceedings of the CSEE ©2013 Chin.Soc.for Elec.Eng. 0258-8013 (2013) 36-0050-12 TM 615 A 470 40  (() 200072) Hot Spot Detection and Fuzzy Optimization Control Method of PV Module WU Chunhua, ZHOU Diqing, LI Zhihua, FU Li (Shanghai Key Laboratory of Power Station Automation Technology, Department of Automation, Shanghai University, Zhabei District, Shanghai 200072, China) ABSTRACT: Partial shading instances are very common in photovoltaic (PV)systems. Partial shading will lead to the decrease of the PV system output power, even cause a hot spot phenomenon which may destroy the structure of the PV cell and in severe cases it may cause fire. In this paper, the output characteristics of PV module under partial shading condition 0 was deeply studied, and the changing regularity of the output characteristics of PV module with hot spot was summarized. Then a method to detect whether there is a hot spot using the slope and the short-circuit current was proposed. Based on the method, this paper also proposed a fault diagnosis and optimal control strategy based on fuzzy control. Through the scan of