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A Single-Stage Resonant Inductive Wireless Power Transfer Converter With Interleaved Power Factor Correction
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DOI：10.1109/JESTIE.2026.3663684.png)
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Abstract
En 中文
This article proposes a single-stage resonant inductive wireless power transfer (WPT) converter with integrated interleaved power factor correction (PFC). By directly combining an interleaved boost-type PFC rectifier with a full-bridge resonant WPT stage into one unified power conversion stage, the proposed topology removes the intermediate dc-dc WPT stage, thereby reducing power conversion stages, semiconductor device count, and overall system size. The interleaved PFC substage operates in discontinuous conduction mode, which attenuates input current ripple, improves electromagnetic compatibility, and maintains a near-unity power factor (PF). Furthermore, the resonant inductive coupling network and compensation capacitors are co-designed to achieve efficient wireless energy transfer and soft-switching operation of all primary switches, effectively reducing switching losses and enhancing efficiency. Finally, a 100 V/50 Hz laboratory experimental prototype is developed to validate the proposed converter. Experimental results confirm high PF, low input current distortion, and high efficiency, demonstrating that the proposed single-stage converter is a promising solution for compact, low-cost, and high-performance wireless power applications.
Keywords:
Voltage
Capacitors
Inductors
Wireless power transfer
Topology
Transmitters
Rectifiers
Power conversion
Switching loss
Switches
AC-DC
interleaved power factor correction (PFC)
resonant inductive coupling
single-stage
wireless power transfer (WPT)
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