New Circulation Control Method for Micro-Grid with Multi-Inverter Micro-Sources

An improved multi-loop feedback method is proposed.The power loop is updated by adding an integrator and voltage in a closed-loop.A simple resistance equivalent output impendence controller and a robust predictive deadbeat grid-connected control method are proposed.The proposed robust predictive deadbeat control is adapted to enhance the system robustness and,reduce the impact of power harmonic due to line impendence and decrease the current distortion due to the control delay and inductance deviation.Simulation results verified the validity of the proposed control method.