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 conjugate 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.