复合控制算法在LCL型SVG中的应用研究  

Research on Application of Compound Control Algorithm in LCL SVG

作　　者：覃日升 王飞义 杨永飞 吕孝国 QIN Ri-sheng;WANG Fei-yi;YANG Yong-fei;LU Xiao-guo(Yunnan Electric Power Research Institute, Kunming 650000, China)

机构地区：[1]云南电力科学研究院,云南昆明650000 [2]辽宁荣信兴业电力技术有限公司,辽宁鞍山114000

出　　处：《电力电子技术》2018年第6期88-91,共4页Power Electronics

摘　　要：重复控制与比例积分(PI)控制相结合可以获得更好的稳态补偿精度与动态响应性能。有源阻尼技术是实现LCL型滤波器谐振峰值抑制的有效方法。为了抑制LCL滤波器的谐振尖峰,提出一种复合重复控制与电容电流反馈相结合的有源阻尼控制策略。该控制策略在d,q坐标系下实现逆变器电流反馈与电容电流反馈电流双环控制;应用于无功、负序、零序、谐波补偿时具有高鲁棒性、动态响应快、稳态精度高、阻尼特性好等优点。仿真与实验结果证明了所提控制策略的有效性与实用性。The combination of repetitive control and proportional integral（PI） control can achieve better steady-state compensation accuracy and dynamic response performance.Active damping technique is an effective method to realize the resonant peak suppression of LCL fiher.In order to suppress the resonant spikes of the LCL filter,an active damping control strategy combining compound repetitive control and capacitor current feedback is proposed.The con- trol strategy under the d,q coordinate system achieves the inverter current feedback and capacitor current feedback current double loop control,used in reactive power,negative sequence,zero sequence,harmonic compensation with high robustness ,fast dynamic response, high steady-state precision ,good damping characteristics.Simulation and experi- mental results show the effectiveness and practicability of the proposed control strategy.

关 键 词：滤波器 复合重复控制 电容电流反馈 有源阻尼控制 

分 类 号：TN713[电子电信—电路与系统]