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This chapter introduces a mode-switching-based phase-shift control (MS-PSC) strategy for IPT systems. This strategy enables efficient power regulation, load adaptation, and wide zero-voltage-switching (ZVS) operation without auxiliary DC–DC converters. By dynamically transitioning between full-, mixed-, and half-bridge modes on both inverter and rectifier sides, the MS-PSC strategy achieves extended ZVS and minimizes reactive power circulation. Consequently, it improves system efficiency across a broad power range compared with conventional triple-phase-shift (TPS) control and hybrid modulation techniques. The chapter analyses the operating principles of each mode, outlines the control implementation and mode selection strategy, and validates the approach through experiments. Experimental results confirm that the MS-PSC maintains 93.5–96.1% efficiency over 1–10 kW with a coupling coefficient of k = 0.19, delivering 1.5–6% efficiency improvements over existing TPS control within the 10–63% power range.

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Mode-Switching-Based Phase-Shift Control

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  • 发表日期：

    2026年

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  • Zhu Gangwei

摘要

This chapter introduces a mode-switching-based phase-shift control (MS-PSC) strategy for IPT systems. This strategy enables efficient power regulation, load adaptation, and wide zero-voltage-switching (ZVS) operation without auxiliary DC–DC converters. By dynamically transitioning between full-, mixed-, and half-bridge modes on both inverter and rectifier sides, the MS-PSC strategy achieves extended ZVS and minimizes reactive power circulation. Consequently, it improves system efficiency across a broad power range compared with conventional triple-phase-shift (TPS) control and hybrid modulation techniques. The chapter analyses the operating principles of each mode, outlines the control implementation and mode selection strategy, and validates the approach through experiments. Experimental results confirm that the MS-PSC maintains 93.5–96.1% efficiency over 1–10 kW with a coupling coefficient of k = 0.19, delivering 1.5–6% efficiency improvements over existing TPS control within the 10–63% power range.