Quantitative Design for the Battery Equalizing Charge/Discharge Controller of the Photovoltaic Energy Storage System

The purpose of this paper is to develop a photovoltaic module array with an energy storage system that has equalizing charge/discharge controls for regulating the power supply grid. Firstly, boost converter used in conjunction maximum point tracking (MPPT) such (PVMA) can output at any time. battery architecture composed multiple sets bidirectional buck–boost soft-switching converters serial connection order achieve zero-voltage switching (ZVS) and zero-current (ZCS) so when above 150 W, efficiency be increased by 3%. voltage current signals from are captured input into digital signal processor (DSP) establish control rule. For converter, dynamic mode derived first using step response chosen operating point, then quantitatively designing controller parameters meet pre-defined performance specifications. Finally, actual test results prove time quantitative design shortened more than 10% compared traditional proportional-integral (P-I) regardless charging or discharging; also proves (ESS) valid.