电力系统自动化Issue(3)：95-100,105,7.DOI:10.7500/AEPS201212131
基于极点配置的LCL滤波并网逆变器电流控制策略
Current Control Strategy Based on Pole Placement for Grid-connected Inverters with LCL Filters
摘要
Abstract
The grid-connected inverter with an LCL filter has good application prospects.In connection with its current control, the limitations of the conversional single current closed-loop control are analyzed,and by referring to the active damping control mechanism,a pole placement-based current control strategy is proposed.Through proper feedback,the inner control is enabled to achieve pole placement and the outer grid current control to guarantee a high bandwidth with proportional and integral control.Then,a novel placement strategy is proposed,where two of the four poles are conjugate poles at fundamental frequency,and the remaining two are conj ugate poles at resonance frequency.Consequently,damping of the resonance peak and high loop gain at the fundamental frequency are both obtained.The implementation including feedback choice and parameter design is dealt with and derived.Finally,the control performance is investigated and verified by experiment.关键词
并网逆变器/LCL滤波器/有源阻尼/谐振控制/极点配置/电流控制Key words
grid-connected inverter/LCL filters/active damping/resonant control/pole placement/current control引用本文复制引用
许津铭,谢少军,唐婷..基于极点配置的LCL滤波并网逆变器电流控制策略[J].电力系统自动化,2014,(3):95-100,105,7.基金项目
国家自然科学基金资助项目(51077070) （51077070）
江苏省普通高校研究生科研创新计划资助项目(CXZZ12_0153) （CXZZ12_0153）
江苏省科技支撑计划资助项目(BE2010188)@@@@This work is supported by National Natural Science Foundation of China(No.51077070),Funding of Jiangsu Innovation Program for Graduate Education (No.CXZZ12_0153) and Science and Technology Support Program of Jiangsu Province (No.BE2010188) （BE2010188）
