Control Strategy for Distributed Integration of Photovoltaic and Battery Energy Storage System in Micro-Grids

The solar radiation and temperature have an impact on the output power characteristic of the photovoltaic system where the purpose of irradiance and temperature curves are nonlinear. [...]during the day, the solar radiation has unexpected variation. Almost all Plus Integral Controller (PIC) own set Plus Integral (PI) gains however, real time current gains are usually applied to PI controller applying Fuzzy logic. [...]output feature of battery energy storage system utilized real time current gains to PI controller by applying fuzzy logic is quicker and much more precise that using fixed gains [11]. Fuzzy logic offers strength to nonlinear design evaluation as well as don't have to use mathematical model when comparing to general PI controller. [...]utilizing Fuzzy PI controller at battery energy battery storage system will be much more precise and faster than PI controller at battery energy storage system. From the Table 2, it shows that without support from the PV system, the total cost for power usage was MYR 1.10 compare with support from PV system which is only MYR 0.43. [...]PV system helps in reduce the cost of electrical energy uses. 4.Conclusion This project proposes a control strategy for distributed integration of PV and battery energy storage in micro-grid where the battery controller will track control of the current in primary side of the transformer thus set the micro-grid system in grid connected or islanded mode.