Structure Design and Operation Strategy of Storage Battery on Paralleling and Independent Controlling in Photovoltaic System

Abstract

The charging and discharging control and management of the energy storage battery are the key links to influence the performance and the service life of the battery in photovoltaic system. According to the inherent characteristics of power terminal of photovoltaic power generation system, this paper designs a control operation mode of a paralleling and independent controlling structure, uses charging and discharging controlled strategy by time-sharing grouped , combines the constant current charging, pulse charge and floating charge trickle charge. The main features of the integrated control strategy method is capable of more efficient utilization intensity of solar radiation, more reasonable control of charging storage energy system. According to the improvement of the structural design of the existing project 100KW photovoltaic engineering power system, and observation and analysis about a large amount of data, the charging effect is obviously improved compared with the former system.