Multiphase Dual-Output-Type Power Converter for Current Ripple Reduction Based on Adaptive Optimization Algorithm

Multiphase parallel converters are widely used in EV charging, portable electronic power supply for high-power operation and inherent redundancy. However, conventional designs face magnetic integration challenges, requiring careful interphase magnetic coupling and flux balancing, and uncanceled inductor current ripples further increase losses. To address these limitations, this paper proposes a Multiphase Dual-Output-Type (MDOT) converter employing distributed wireless coils to replace conventional inductors. The topology repurposes inductor current ripples as wireless AC energy, enabling simultaneous wired and wireless power delivery. By optimizing inter-coil coupling, equivalent inductance is enhanced without enlarging magnetic components, reducing current ripples compared to traditional designs. A proportional-integral perturbation-andobservation (PI-PO) algorithm dynamically adjusts phase duty cycles, suppressing parasitic-induced efficiency deviations while ensuring voltage stability. Experimental results demonstrate 93% peak efficiency with dual-output regulation. The proposed system achieves 5% efficiency gains over wired-only symmetric configurations and 3% improvement versus uniformly coupled three-phase systems, validating its effectiveness in balancing power density, efficiency, and multifunctional energy delivery for next-generation charging applications.