电力系统保护与控制2024，Vol.52Issue(1)：13-22,10.DOI:10.19783/j.cnki.pspc.230437
面向多运行模式的并网逆变器改进控制策略
Improved control strategy for a grid-connected inverter for multiple operational modes
摘要
Abstract
To improve the performance and meet the regulation demands of multiple operation modes(grid-connected mode and stand-alone mode)simultaneously for the grid-connected inverter,a novel improved control strategy based on droop control and virtual synchronous generator(VSG)control combined with double adaptive coefficients is proposed.It can flexibly adjust the inertia and damping to meet the regulation requirements of different modes.The designed double adaptive coefficients include adaptive coordination coefficients and adaptive inertia coefficients.The former can improve the system dynamic characteristics and enhance the applicability.The latter can further improve the power overshoot and oscillation problems to completely eliminate power overshoot.The power response of the proposed improved control strategy is no overshoot and oscillation,and it can provide inertia and damping characteristics close to the VSG control and has a faster response speed.It can satisfy the power regulation demands in grid-connected mode and the frequency regulation demands in stand-alone mode simultaneously,and has greater applicability and better dynamic characteristics.Finally,the effectiveness and feasibility of the proposed improved control strategy are demonstrated by control hardware-in-loop(CHIL)experiments.关键词
改进控制/并网逆变器/双重自适应/下垂控制/虚拟同步发电机控制Key words
improved control/grid-connected inverter/double adaptive/droop control/virtual synchronous generator control引用本文复制引用
陈宇,王维庆,李笑竹,朱金龙..面向多运行模式的并网逆变器改进控制策略[J].电力系统保护与控制,2024,52(1):13-22,10.基金项目
国家自然科学基金项目资助(52067020,52267005) （52067020,52267005）
新疆维吾尔自治区科技厅重大科技专项资助(2022A01004) This work is supported by the National Natural Science Foundation of China(No.52067020 and No.52267005). （2022A01004）
