中国电机工程学报2012，Vol.32Issue(25)：133-142,10.
基于PI调节器和电容电流反馈有源阻尼的LCL型并网逆变器闭环参数设计
Design of Grid-connected Inverters With LCL Filter Based on PI Regulator and Capacitor Current Feedback Active Damping
摘要
Abstract
The active damping based on capacitor current feedback is an effective way to damp the resonance caused by the LCL filter in the grid-connected inverters. Besides, PI regulator is widely used to control the injected grid current for its simplicity and effectiveness. Based on the Pi-based injected grid current regulator and capacitor-current-feedback active damping, the effects of the controller parameters on the specific requirements of the LCL-type grid-connected inverter, i.e., steady-state error, phase margin, and gain margin, were investigated in this paper. A step-by-step method was proposed to obtain the entire parameter regions that meet the requirements aforementioned. Based on these parameter regions and specific application requirements, the appropriate injected grid current regulator and feedback coefficient of capacitor current could be obtained without try and error procedure. The proposed method can yield a proper controller which ensures effectively damped, highly robust, fast transient-response and low steady-state-error system. Experimental results verify the effectiveness of the proposed design method.关键词
LCL滤波器/并网逆变器/有源阻尼/电容电流反馈/PI调节器/控制器设计Key words
LCL filter/ grid-connected inverter/ active damping/ capacitor current feedback/ PI regulator/ controller design分类
信息技术与安全科学引用本文复制引用
鲍陈磊,阮新波,王学华,潘冬华,李巍巍,翁凯雷..基于PI调节器和电容电流反馈有源阻尼的LCL型并网逆变器闭环参数设计[J].中国电机工程学报,2012,32(25):133-142,10.基金项目
国家自然科学基金项目(50837003,51007027) （50837003,51007027）
国家重点基础研究发展计划项目(973项目)(2009CB219706). （973项目）
