期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 36, 期 2, 页码 1366-1375出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2020.3009947
关键词
Battery; contactless connector; dc-dc converter; transformer
This article introduces a multiport, bidirectional, contactless connector based on inductive power transfer technology. The unique structure of the axially gapped cylindrical core enables the connector to control output of multiple low-voltage batteries in parallel and achieve accurate power distribution. Experimental results show 95% efficiency and power-balancing function at high power transfer, indicating potential for enhancing safety and reliability of large capacity, high-power batteries.
This article presents a multiport, bidirectional, contactless connector based on the inductive power-transfer technology. The unique structure of the axially gapped cylindrical core facilitates the proposed contactless connector to control the output of multiple low-voltage batteries in parallel, thereby balancing the state of charge. Axial gaps in the proposed transformer facilitate realization of accurate power distribution via multipleinput/output phase-shift control. Investigation performed on a prototype of the proposed connector revealed realization of 95% efficiency at +/- 1 kW, 3 mm contactless power transfer along with a power-balancing function between a 300 V output and six of 50 V inputs. The proposed technology is expected to enhance the safety and reliability of large capacity, high-power batteries employed in electrical-mobility and renewable-energy systems.
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