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Abstract
This paper focuses on using battery storage systems for overcoming the problems in standalone solar photo voltaic systems. A dual active bridge based on the isolated DC-DC converter is used for the high power transfer efficiency, fast dynamic control, bidirectional power flow and for smaller size. A phase shift control modulation is used in DAB. Circulating current in the dual active bridge converter becomes a major problem. In this paper modified phase shift control algorithm is used to reduce the circulating power and to improve the battery operation for long time. Fuzzy logic control is used in the three phase converter side for the reduction in harmonics and to improve the switching performance.The performance of solar photo voltaic system with projected battery converter is verified by the PSCAD based simulation in both the charging and discharging mode.