Partial Power Processing architecture applied to a Battery Energy Storage System

This paper presents a Partial-Power processing architecture implemented on a Battery Energy Storage System (BESS). This model allows for easy control of the battery charging current. The purpose has been to improve the overall efficiency of the system while reducing power losses with respect to the full-power converter. Now the converter only processes the differential power, which allows a reduction of the nominal power in the DC-DC converter, and therefore the power losses decrease. The topology used for the design of the partial-power converter has been an isolated Full-Bridge converter with synchronous rectifier. This architecture has some advantages over traditional topology such as high power density, small size, or low cost since the DC-DC converter only processes a fraction of the total power. The effectiveness of the strategy has been validated by the Matlab/Simulink software simulation.