基于惯性补偿的微网逆变器控制策略  

Control strategy based on inertia compensation for microgrid inverter

作　　者：段志尚 姜波[1] 

机构地区：[1]新疆大学电气工程学院,新疆乌鲁木齐830047

出　　处：《安徽大学学报（自然科学版）》2015年第6期67-72,共6页Journal of Anhui University(Natural Science Edition)

摘　　要：针对带LC输出滤波器的三相逆变器,分析了并网和离网两种状态下的PR控制策略.对离网感性负载时系统出现的振荡现象,提出PR控制器结合惯性补偿的控制策略,在反馈回路加入一阶惯性环节,以改善系统动态结构、消除系统自振荡.仿真结果表明,所提控制策略在离网逆变器中具有良好的动静态性能,可实现正弦交流指令的零稳态误差控制.The proportional-resonant （PR） control strategies of three-phase inverter with LC output filter were analyzed under the grid-connected and off-grid operating mode. In the off-grid operating mode, self-oscillation might occur in the system with inductive load. In view of the problem, a novel PR control strategy combined with inertia compensation was proposed. This method would improve dynamic performance and eliminate self-oscillation of the system by adding a first order inertial unit in the feedback loop. The simulation results showed that the control strategy in the off-grid mode could make inverter with good static and dynamic performance, and realized zero steady-state error control of the Sine AC instruction.

关 键 词：三相逆变器 PR控制 惯性补偿 离网 

分 类 号：TM615[电气工程—电力系统及自动化] TM464