基于单相LCL并网逆变器的复合双环控制  

Compound Double Loop Control Based on Single Phase LCL Grid-Connected Inverter

作　　者：汪和锋 蔡华锋[1,2] WANG Hefeng;CAI Huafeng(School of Electrical and Electronic Engineering,Hubei Univ.of Tech.,Wuhan 430068,China;Efficient Utilization of Solar Energy Hubei Collaborative Innovation Center,Hubei Univ.of Tech.,Wuhan 430068,China)

机构地区：[1]湖北工业大学电气与电子工程学院,湖北武汉430068 [2]湖北工业大学太阳能高效利用湖北省协同创新中心,湖北武汉430068

出　　处：《湖北工业大学学报》2024年第2期87-92,共6页Journal of Hubei University of Technology

基　　金：高效利用及储能运行控制湖北省重点实验室基金项目(HBSKFZD2017008)。

摘　　要：针对能馈型电子负载后级的LCL并网逆变环节,双环控制的电压外环采用幂函数作为输入端量化因子限幅的改进模糊PI控制器,电流内环采用无源控制策略,以提高系统的并网性能。仿真结果表明,该法减少了系统中间母线电压的超调量和波动幅度,降低了并网电流的谐波失真率,提高了系统的整体性能。Aiming at the LCL grid connected inverter link of the rear stage of the energy fed electronic load,the limiting fuzzy PI controller with power function as the quantization factor of the fuzzy control input is introduced to control the voltage outer loop,and the passive controller is used as the current inner loop to improve the grid connected performance of the system.The simulation results show that the control method in this paper reduces the overshoot and fluctuation amplitude of the intermediate bus voltage,reduces the harmonic distortion rate of the grid connected current,and improves the overall performance of the system.

关 键 词：无源控制 幂函数 模糊控制 能馈型电子负载 双环控制 

分 类 号：TM464[电气工程—电器]