E3S Web Conf.
Volume 182, 20202020 10th International Conference on Power, Energy and Electrical Engineering (CPEEE 2020)
|Number of page(s)||6|
|Section||Modern Power System Control and Operation|
|Published online||31 July 2020|
The Reactive Power Support Strategy based on Dual-loop Control for Three-phase Grid-connected Inverter
1 South China University of Technology, College of Electric Power, Wushan Road, Guangzhou 510640, China
2 IREENA Laboratory, University of Nantes, 37 boulevard de l’université, Saint-Nazaire 44602, France
* Corresponding author: firstname.lastname@example.org
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 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.
© The Authors, published by EDP Sciences, 2020
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