Load-Side Control for a Battery-Integrated Dual-Winding Magnetic Energy Harvester

This paper presents a low-frequency Dual-Active-Bridge (DAB) converter with unidirectional control applied to the load-side active bridge converter (ABC) in a Dual-Winding Active Magnetic Energy Harvester (D-AMEH) architecture. The proposed system enables independent control of power flow to the load - validated for power levels up to 150 W - while maintaining maximum power extraction from the grid via an MPPT-controlled battery-side ABC. A closed-loop PI controller regulates the output voltage. A MATLAB-based modulation strategy generates optimal switching parameters to minimize the RMS inductor current. PSIM simulation results validate system stability under varying system conditions, demonstrating effective voltage regulation with minimal current stress.