Abstract
With the penetration of distributed energy, such as photovoltaic and battery energy storage systems in the distribution system, how to improve the power quality based on the control strategy of the inverter presents new challenges. In this paper, from the perspective of inverter in intelligent microgrid, the basic principle of inverter in the intelligent microgrid and the classic inverter types are described; Different inverter topologies are analyzed and their different functional characteristics and advantages and disadvantages are summarized; This paper analyzes the problems and solutions that affect the power quality output, and summarizes the different control strategies of the current inverter. Finally, the future research direction of inverter technology has prospected.