The Reactive Power Support Strategy based on Dual-loop Control for Three-phase Grid-connected Inverter

WAN Qian, Xia Chengjun, Azeddine Houari, Zhao Xue, Xia Chengjun, Zheng Xiaotian, Huang Chuyin, K. Ogura, E. Sutheerasak, M.L. Kolhe, M. Popescu, H. Li (+2 others)
2020 E3S Web of Conferences  
Renewable energy sources (RESs) generally connected with electric power system via power electronic interface. This paper presents a reactive power and voltage (Q/V) control strategy of three-phase photovoltaic (PV) system to offering reactive power based on the typical dual-loop control topology. It is worth mentioning that control strategy can support reactive power when a low voltage fault occurs in AC bus without additional compensation device. With the help of the decoupling control, the
more » ... ling control, the PV array can generate active power as much as possible in variable external solar radiation conditions. The voltage of PV arrays is adopted as the objective, which on account of the easy availability and controllability of voltage, to control output active power. Besides, accurately modeling process from a PV cell to PV array is described in the beginning to acquire the P-V and V-I characteristics of PV arrays, which promote the designment of Q/V control.
doi:10.1051/e3sconf/202018202011 fatcat:a67w6dlmmbhmxlc52kjvnyjeaq