Multi-channel inductive power transfer system based on ISOP topology

Qijun Deng; Lixian Wang; Peng Luo; Dariusz Czarkowski; Wenshan Hu

Multi-channel inductive power transfer system based on ISOP topology

Vol. 24, No. 3, pp. 503-514, Mar. 2024

10.1007/s43236-023-00740-x

Inductive power transfer

ISOP

Multi-channel IPT

Modeling and control

Resonant power converter

Abstract

With the expansion of mid-voltage DC distribution, inductive power transfer (IPT) systems supplied directly by DC distribution with a high input voltage become a possibility. A high input voltage leads to an enhanced power transfer level and low losses with the DC bus under a certain power transmission. However, the ultra-high input voltage of single-channel IPT is impossible because of the limits on the voltage/current ratings of converter components. Thus, a multi-channel IPT system based on an input-series output-parallel (ISOP) topology is proposed. Parameter differences among various channels result in an unbalanced input voltage for series inverters, which affects the system's operation stability and life. A leader–follower control strategy is proposed to implement input voltage sharing and output load voltage tracking for the proposed ISOP-based IPT system. One of the inverters serves as the lead control unit to keep the output voltage constant, while the remaining inverters function as followers that trace the input DC voltage of the main channel to implement voltage sharing among the inverters. A three-channel ISOP-based IPT prototype is constructed to verify the eff ectiveness of the control strategy. Experimental results show that the input voltage sharing and constant output voltage are both achieved under the designed controller.

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Cite this article

[IEEE Style]

Q. Deng, L. Wang, P. Luo, D. Czarkowski, W. Hu, "Multi-channel inductive power transfer system based on ISOP topology," Journal of Power Electronics, vol. 24, no. 3, pp. 503-514, 2024. DOI: 10.1007/s43236-023-00740-x.

[ACM Style]

Qijun Deng, Lixian Wang, Peng Luo, Dariusz Czarkowski, and Wenshan Hu. 2024. Multi-channel inductive power transfer system based on ISOP topology. Journal of Power Electronics, 24, 3, (2024), 503-514. DOI: 10.1007/s43236-023-00740-x.