基于PRHC调节器的LCL滤波器并网优化控制  

Optimized Control of Grid-connected LCL Filter Based on PRHC Controller

作　　者：唐健[1] 肖文静[1] 赵耕[1] 王多平[1] 

机构地区：[1]中国东方电气集团中央研究院智能装备与控制技术研究所,四川成都610000

出　　处：《电力电子技术》2013年第11期76-77,共2页Power Electronics

摘　　要：针对电压型并网逆变器输出侧LCL滤波器,提出基于比例谐振(PR)和谐波补偿与电流加权反馈和分裂电容电流反馈相结合的控制方法。PR调节器可提高对电流基波的增益,从而降低跟踪稳态误差;采用指定次数谐波补偿可提高逆变器对电网的抗扰性;电流加权反馈和分裂电容电流反馈可降低LCL滤波器的谐振峰。最后通过实验验证了该控制策略。A novel control strategy is proposed for grid-connected voltage source inverters with a LCL filter based on proportional resonant（PR） and harmonic compensation, weighted current feedback and split capacitor current feedback method.PR controller can reduce the steady-state tracking error by increasing the loop gain.Harmonic compensation can help the system to suppress disturbance from the grid.Weighted current feedback and split capacitor current feedback method can reduce resonant peak of LCL filter.Finally, the new control strategy is verified by experiment.

关 键 词：逆变器 比例谐振 谐波补偿 滤波器 

分 类 号：TM464[电气工程—电器]