LCL滤波的双频并网逆变器控制策略研究  

Research on Control Strategy of Dual-Frequency Grid-Connected Inverter with LCL Filter

作　　者：胡文翠[1] 王明渝[1] 邱晓明[1] 马兰珍[1] 徐四勤[1] 聂海龙 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《低压电器》2013年第3期36-40,共5页Low Voltage Apparatus

基　　金：输配电装备及系统安全与新技术目录重点实验自主研究项目(2007DA10512711205)

摘　　要：提出一种新型的采用LCL滤波器对双频并网逆变器输出电流进行滤波的控制策略。高频逆变器采用基于准比例谐振调节器和比例调节器的双闭环控制,改善系统进网电流的动态性能;低频逆变器采用滞环控制,快速跟踪高频逆变器电流,传递大部分功率。额定容量为50 kVA并网逆变器的仿真结果,验证了所提方案的有效性和实用性。A new control strategy was proposed, which uses LCL filter for filtering the output current of dual- frequency grid-connected inverter. The high frequency inverter uses double loop control based on a quasi- proportional resonant regulator and a proportional regulator, which could improve the dynamic performance of the system. The low frequency inverter uses current hysteresis control, transforming most power, which eouht make the whole system satisfy the standard of gq＇id-connected current. The simulating results of a 50 kVA grid connected inverter verify the validity and reasonability of the proposed scheme.

关 键 词：双频并网逆变器 双环控制 准比例谐振控制 LCL滤波器 效率 

分 类 号：TM464.9[电气工程—电器]