Journal
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
Volume 10, Issue 5, Pages 6358-6370Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JESTPE.2022.3180029
Keywords
Capacitive power transfer (CPT); constant voltage (CV) outputs; multiple loads; power-repeater
Categories
Funding
- Fundamental Research Funds for the Central Universities [2242022R10123]
- Fujian Key Laboratory of New Energy Generation and Power Conversion [KLIF-202101]
- National Engineering Laboratory of Energy-Saving Motor and Control Technique [KFKT202209]
- National Natural Science Foundation of China [51977147]
- China Scholarship Council
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This article introduces a novel capacitive power transfer system with multiple constant voltage outputs. By designing capacitive repeater units and utilizing split-inductor matching networks, the system enables independent operation of multiple loads, and enhances electric coupling with aluminum oxide ceramics and L-LCL networks.
In this article, a novel load-independent capacitive power transfer (CPT) system with multiple constant voltage (CV) outputs is proposed. The capacitive repeater unit is designed to enhance the power transfer capability, which contains four plates where two plates are used to receive power from its previous unit and the other two plates transfer power to the next unit. Electric coupling between the receiving and transmitting plates in the repeater unit can be eliminated by placing them perpendicularly and employing the split-inductor matching network. The load is connected with each capacitive repeater unit so that multiple loads can be powered simultaneously. Aluminum oxide ceramic is placed between the two adjacent units to enhance their electric coupling. The L-LCL network is adopted to compensate each capacitive repeater unit. Thus, CV outputs can be achieved for all loads, which ensure the independent operation of each load. The output voltages and efficiency are analyzed when considering the parasitic resistances. Finally, a three-load experimental setup is built to verify the effectiveness of the proposed system with an efficiency of 93.21%.
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