【摘要】 针对微电网多VSG并联运行时，各虚拟同步发电机与负荷之间的线路阻抗不一致，导致并联逆变器端口电压不同，进而引发功率环流的问题，提出了一种VSG并联系统控制方法，设计了基于模糊PI控制的自适应虚拟阻抗模块来快速补偿并联逆变器端口电压的差值，从而抑制环流，并实现功率的精确分配，最后通过MATLAB/Simulink仿真实验验证了所提控制策略的有效性。更多还原

【Abstract】 A VSG parallel system control method is proposed to address the issue of circulating current caused by inconsistent line impedances between virtual synchronous generators and loads during the parallel operation of multiple VSGs in microgrids. An adaptive virtual impedance module based on fuzzy PI control is designed to quickly compensate for the voltage difference at the parallel inverter ports, suppress circulating currents, and achieve accurate power allocation. Finally the effectiveness of the proposed control strategy is verified through MATLAB/Simulink simulation.更多还原