An Integrated Wired/Wireless Charging Topology for AGVs with Dual-Mode Control

Le résumé fourni par la source

This paper proposes an integrated topology with both wired and wireless outputs for automated guided vehicle (AGV) charging systems. The topology shares a primary-side bridge circuit and resonant network, achieving wired charging through a switched-capacitor converter and utilizing the resonant inductor as a transmitter coil for wireless charging. In wired charging mode, a phase-shifted and variable-frequency modulation strategy is adopted to regulate the output, enabling soft charging and reducing capacitor charge-sharing losses. In wireless charging mode, pulse-width modulation is employed to ensure precise alignment with battery charging curves. Detailed analyses of the equivalent circuits, steady-state operational waveforms, and zero-voltage switching (ZVS) conditions for both modes are presented. Theoretical analysis and numerical simulations validate the feasibility of achieving ZVS under varying load conditions, and a parameter design methodology is proposed. Simulation results based on a 400 W prototype demonstrate that the proposed topology achieves ZVS across a wide load range$(1 \sim 8 \mathrm{A})$, supporting both constant-current$(8 \mathrm{A})$and constantvoltage$(50 \mathrm{V})$charging phases for AGVs.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.