22 kW LCC-CCL wireless charging system for 800 V electric vehicles with integrated PFC-buck-IPT control

This paper presents the design and experimental validation of a 22 kW LCC–CCL wireless charging system (WCS) developed for 800 V electric-vehicle (EV) platforms. The proposed system integrates a three-phase power-factor-corrector (PFC), a dual-interleaved buck converter serving as the battery-management (BM) stage, and an inductive-power-transfer (IPT) converter within a unified control framework, enabling seamless operation across constant-current (CC), constantpower (CP), and constant-voltage (CV) charging modes. To ensure high-efficiency power transfer under wide load and misalignment conditions, an LCC–CCL compensation network is analytically designed to maintain zero-voltage switching (ZVS) and a constant-current characteristic at a fixed operating frequency of 85 kHz. A complete system model, including magnetic-pad design, impedance matching, and real-time coordination among the PFC, buck, and IPT converters, is established. A 22 kW prototype, implemented using 1200 V-class SiC devices, achieves 93.87% peak efficiency, a power factor above 0.985, and a total harmonic distortion (THD) below 4% across a 500–860 V battery-voltage range, even under Z1-class, 75 mm × 100 mm misalignment. Compared with existing 400 V or single-stage WCS architectures, the proposed platform demonstrates superior scalability and dynamic stability for next-generation WPT4 level high-voltage EV applications. Experimental results verify that the integrated PFC-buck-IPT control strategy provides a practical and efficient solution for future high-power wireless-charging systems.

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Cite this article

[IEEE Style]

C. Lim, J. Yeom, S. Jeong, I. Lee, "22 kW LCC-CCL wireless charging system for 800 V electric vehicles with integrated PFC-buck-IPT control," Journal of Power Electronics, vol. 26, no. 4, pp. 934-944, 2026. DOI: 10.1007/s43236-026-01288-2.

[ACM Style]

Chang-Min Lim, Jeong-Won Yeom, Seung-Min Jeong, and Il-Oun Lee. 2026. 22 kW LCC-CCL wireless charging system for 800 V electric vehicles with integrated PFC-buck-IPT control. Journal of Power Electronics, 26, 4, (2026), 934-944. DOI: 10.1007/s43236-026-01288-2.