A Battery Wireless Charger With Full Load Range Soft-Switching Operation and Zero-Switching-Loss Inverter

Wang, Youzheng; Liu, Hongchen; Yu, Huiying; Wheeler, Patrick

Abstract

To enhance the efficiency and soft-switching stability of the battery wireless charger within the full load range, a soft-switching battery wireless charger (SS-BWC) is presented. The presented SS-BWC can achieve smooth switching from constant current mode to constant voltage mode under the condition of uncomplicated control. The high-frequency inverter (HFI) can operate with zero switching loss in the whole charging process by adopting a novel auxiliary resonant network, which can effectively reduce the switching loss in the HFI and refrain from soft-switching loss due to the compensation element parameter perturbation. Besides, the HFI adopts a new modulation method, and only one power switch tube is in the high-frequency switching state in a switching cycle, which is also conducive to enhancing efficiency. The operating principle of the presented SS-BWC is elaborated in detail, and the realization conditions for soft-switching are also designed. Finally, an experimental device is built to verify the feasibility and superiority of the proposal.

Citation

Wang, Y., Liu, H., Yu, H., & Wheeler, P. (2024). A Battery Wireless Charger With Full Load Range Soft-Switching Operation and Zero-Switching-Loss Inverter. IEEE Transactions on Industrial Electronics, 71(7), 7063-7074. https://doi.org/10.1109/TIE.2023.3306411

• Journal Article Type: Article
• Acceptance Date: Apr 1, 2023
• Online Publication Date: Aug 29, 2023
• Publication Date: 2024-07
• Deposit Date: Apr 25, 2024
• Journal: IEEE Transactions on Industrial Electronics
• Print ISSN: 0278-0046
• Electronic ISSN: 1557-9948
• Publisher: Institute of Electrical and Electronics Engineers
• Peer Reviewed: Peer Reviewed
• Volume: 71
• Issue: 7
• Pages: 7063-7074
• DOI: https://doi.org/10.1109/TIE.2023.3306411
• Keywords: Electrical and Electronic Engineering; Control and Systems Engineering
• Public URL: https://nottingham-repository.worktribe.com/output/24870198
• Publisher URL: https://ieeexplore.ieee.org/document/10234135