Fault Tolerant Multi-Tx/Multi-Rx Inductive Power Transfer System with a Resonator Coil

Date

2022-01-01

Author

Ayaz, Enes
Altun, Ogün
Polat, Hakan
Keysan, Ozan

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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This paper presents a novel multi-transmitter (Tx) / multi-receiver (Rx) inductive power transfer system. Compared to conventional single-Tx/single-Rx systems, multi-Tx/multi-Rx topologies increase reliability and fault tolerance. However, unequal power distribution is challenging in these systems due to coupling differences, which prevents them from operating at rated power or requires over-designed modules. This study proposes the addition of a middle-stage resonator (MSR) that balances power distribution by separating direct couplings between Tx and Rx coils. Thus, it increases reliability and fault tolerance. Direct couplings between Tx and Rx coils are avoided via the proposed coil structure, which also provides rotational symmetry. Moreover, an analytical method is proposed to avoid bifurcation, which reduces switching losses. Then, the fault tolerance analysis on multi-Tx/multi-Rx systems and optimum selection of module numbers are investigated. Finally, a 1kW 2Tx/1MSR/4Rx prototype is established to continue operation under single-Tx, single-Rx, and double-Rx open circuit faults.

Subject Keywords

Bifurcation, Circuit faults, common DC bus, Couplings, fault tolerance, inductive power transfer, modular design, Power distribution, Q-factor, Rectifiers, reliability, resonator coil, Vehicle dynamics, Wireless power transfer

URI

https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85139386351&origin=inward
https://hdl.handle.net/11511/101655

Journal

IEEE Journal of Emerging and Selected Topics in Power Electronics

DOI

https://doi.org/10.1109/jestpe.2022.3208423

Collections

Department of Electrical and Electronics Engineering, Article

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Citation Formats

E. Ayaz, O. Altun, H. Polat, and O. Keysan, “Fault Tolerant Multi-Tx/Multi-Rx Inductive Power Transfer System with a Resonator Coil,” IEEE Journal of Emerging and Selected Topics in Power Electronics, pp. 0–0, 2022, Accessed: 00, 2023. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85139386351&origin=inward.