可再生能源2018，Vol.36Issue(4)：532-538,7.
可调度型光伏并网逆变器直接电流控制策略研究
Research on control strategy of direct current photovoltaic grid-connected inverter
摘要
Abstract
Considering the characteristics that the output power of photovoltaic power station has a large fluctuation and can not be controlled, in order to realize the stable output and flexible scheduling of the active power of the photovoltaic power station. In this paper, a direct current control scheme based on the optimized decouple double synchronous reference frame phase-locked loop (DDSRF-PLL) is proposed for the adjustable grid-connected inverter of three-phase photovoltaic power generation system. The control accuracy and response ability of the control scheme are closely related to the merits of the performance of the phase-locked loop, therefore, a new high performance phase locked loop is proposed to apply it to direct current control scheme in this paper in order to improve the control performance of the whole system, which is a phase locked loop that combines the second-order generalized integrator-quadrature signals generator (SOGI-QSG) and DDSRF-PLL.The model is built in Matlab/Simulink to validate the control strategy.The results show that the photovoltaic grid-connected inverter under the control strategy can realize the stable output and flexible scheduling of the active power according to the actual demand,the dynamic performance is excellent,the anti-interference ability is strong. It is of great significance to improve the grid acceptance of photovoltaic power generation and the safe and stable operation of power grid.关键词
三相并网逆变器/直接电流控制/优化型DDSRF-SPLL/灵活调度Key words
three-phase grid-connected inverter/direct current control/optimized DDSRF-SPLL/flexible scheduling分类
能源科技引用本文复制引用
樊艳芳,张占锋,王一波,张雪,何军..可调度型光伏并网逆变器直接电流控制策略研究[J].可再生能源,2018,36(4):532-538,7.基金项目
国家自然科学基金项目(51467019) （51467019）
新疆维吾尔自治区自然科学基金项目(2016D01C034). （2016D01C034）
