Power Management In Solar PV Fed Microgrid System With Battery Support

Installation of renewable resources at single phase residential premises calls on for the need of power management and coordination control of operating system. System is divided components which includes, solar PV maximum power point tracking (MPPT) via boost converter, bi-directional DC-DC converter for battery charging applications, and bidirectional AC-DC converter for feeding AC loads, etc.,. This paper, elaborates the solar PV alongside with battery power management scenario so as to form a sophisticated residential consumer system capable of operating in both grid forming (or, islanded) and feeding (or, grid connected) modes. System is tested via PSCAD based simulation platform, for operation in varying operating modes such that the power could be fed from DC to AC microgrid and vice-versa. DC-AC converter operating in closed loop sine pulse width modulation (SPWM) scheme, is used to control AC side voltage while operating in islanded mode. It works in rectification mode during grid connected mode. In day time, system is in islanded mode where excess / deficit power is exchanged with energy storage unit (ESU). In evening or night time, it operates in grid connected mode so as to charge the ESU.