A control system of grid-connected power conditioner for renewable energy is proposed and studied. The proposed control system consists of voltage and current control strategy, compensation control strategy and anti-islanding control strategy, which can be considered as a solution of the control strategy for renewable energy generation system. The power conditioner with the proposed control system can operate with high efficiency, high power factor and low current and voltage total harmonic distortion in a wide output range. The operation of the proposed control scheme is confirmed by the experimental results on a 10 kW design example.I.