Résumé

This paper deals with modeling and controlling a battery energy storage system composed of a dual active bridge (DAB) converter connected to a voltage source inverter acting as a parallel active power filter (P-APF). A DAB converter control strategy is proposed to control the batteries' current using the dual-phase shift method to avoid reactive current circulation and reduce high current ripples. Thus, the battery lifetime increases, and damages could be avoided. The P-APF control is implemented through a multi-resonant state space controller. The P-APF suppresses harmonic currents and compensates for the reactive power of the load. In addition, it handles fundamental currents associated with battery charging/discharging and converter losses. Simulation results validate the control system models and evaluate the system's performance for assisting the electrical system's reliability where intermittent renewable energy sources exist.