A comprehensive design approach for a three‐winding planar transformer

In this paper, a new three-winding planar transformer design with the integrated leakage inductor is proposed for triple-active-bridge converter. It enables two output voltage levels: high (HV) port and low (LV) port. The primary secondary windings are split unevenly in both side legs while tertiary winding connected parallel. unique configuration enables: (i) enhanced efficiency volume; (ii) suppressed parasitic capacitances. Detailed reluctance loss models developed process. core geometry optimized using reluctance-model-based mathematical computation. Moreover, comprehensive high-fidelity simulations conducted to analyse trade-offs among capacitances, losses, inductances. customized non-overlapping boards assembled, characterized, tested under various power flow conditions.