电力系统保护与控制2018，Vol.46Issue(5)：38-45,8.DOI:10.7667/PSPC170235
基于LCL滤波有源阻尼控制的Z源逆变器并网研究
Research on Z-source inverter grid-connected system based on LCL filter of active damping control
摘要
Abstract
Compared to traditional inverter, Z source inverter has been widely used because of its advantages such as the boost and buck capability, no need to insert the dead-time and so on. Aiming at the disadvantage of high harmonic contents of output voltage and current, the LCL filter is proposed to filter, its performance is excellent, but the resonance peak is easy to cause the system instability. So in this paper the active damping scheme with inner loop of capacitor current and outer loop of grid current is adopted to suppress the resonance peak. In order to avoid tuning parameters repeatedly, a control parameter design method is proposed, which is the pole assignment of the transfer function, so as to obtain the optimal control parameters. Under the premise of ensuring the stability of system, the system has better robustness. Finally, the effectiveness and feasibility of the proposed scheme are verified by simulation and experimental results.关键词
Z源逆变器/LCL滤波器/有源阻尼/双环控制/简单升压控制Key words
Z-source inverter/LCL filter/active damping/double-loop control/simple boost control引用本文复制引用
杨峰峰,杨旭红..基于LCL滤波有源阻尼控制的Z源逆变器并网研究[J].电力系统保护与控制,2018,46(5):38-45,8.基金项目
国家自然科学基金(61203224) （61203224）
上海自然科学基金(13ZR1417800) （13ZR1417800）
上海市科技创新行动技术高新技术领域重点项目(14511101200) （14511101200）
上海市电站自动化技术重点实验室开放课题(13DZ2273800) （13DZ2273800）
上海市重点科技攻关计划(上海市科委地方院校能力建设项目)(14110500700)This work is supported by National Natural Science Foundation of China(No.61203224)and Natural Science Foundation of Shanghai(No.13ZR1417800). （上海市科委地方院校能力建设项目）
