Model Predictive Control of "PV+ESS" Electric Spring

This paper introduces a new Electric Spring topology-Photovoltaic and Energy Storage System Electric Spring. On the basis of the common topology electric spring-2(ES-2), the power supply that provides DC bus voltage is changed to photovoltaic power,and the bus voltage stability is adjusted by a double-closed loop. And, the voltage stability of the control critical load is realized by Finite Control Set Model Predictive Control(FCS-MPC). Finally, the feasibility of the proposed scheme is verified by simulation and experiment platform. On the basis of realizing the original function of the Electric Spring, the photovoltaic energy utilization rate is further improved.