Maximising inductive power transmission using a novel analytical coil design approach.

Heidarian, Maryam; Burgess, Samuel J.; Prabhu, Radhakrishna; Fough, Nazila

Abstract

Maximising power transfer efficiency (PTE) in resonant inductive power transfer (IPT) systems requires strong coupling between transmitter and receiver coils. In applications where system constraints yield a weak inductive link (e.g. significant distance between coils) or there is a requirement for a specific power level, then geometrically optimising the coils can enhance inductive linkage. To achieve this, a novel coil design method has been presented which provides maximum efficiency for both strongly- and loosely-coupled inductive links. A parameter (i.e. "Strong Coupling Factor") has been introduced to assist the design procedure. Discussing results from a practical 1.06 MHz inductive link - developed using the proposed design method - shows that, with proper selection of strong coupling factor (e.g. C=220), the designed coil geometry can provide maximum PTE of 86%. This is in close correlation (F ≈ 3%) with theoretical analysis using MATLAB.

Citation

HEIDARIAN, M., BURGESS, S.J., PRABHU, R. and FOUGH, N. 2019. Maximising inductive power transmission using a novel analytical coil design approach. In Proceedings of the 2019 IEEE MTT-S wireless power transfer conference (WPTC 2019), co-located with the 2019 IEEE PELS workshop on emerging technologies: wireless power (WoW 2019) as part of Wireless power week 2019, 18-21 June 2019, London, UK. New York: IEEE [online], pages 158-161. Available from: https://doi.org/10.1109/WPTC45513.2019.9055553

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 2019 IEEE MTT-S wireless power transfer conference (WPTC 2019)
• Start Date: Jun 18, 2019
• End Date: Jun 21, 2019
• Acceptance Date: Apr 30, 2019
• Online Publication Date: Apr 6, 2020
• Publication Date: Dec 31, 2019
• Deposit Date: May 5, 2020
• Publicly Available Date: Jan 1, 2021
• Publisher: Institute of Electrical and Electronics Engineers (IEEE)
• Peer Reviewed: Peer Reviewed
• Pages: 158-161
• Series Title: Wireless power transfer conference proceedings
• Series Number: 2019
• Series ISSN: 2573-7651
• ISBN: 9781728107066
• DOI: https://doi.org/10.1109/WPTC45513.2019.9055553
• Keywords: Inductive power transfer; Power transfer efficiency; Coil design; Wireless power transfer (WPT); Inductive power transfer (IPT); Resonant coupling; electromagnetic induction; Near-field communication
• Public URL: https://rgu-repository.worktribe.com/output/905522
• Related Public URLs: https://rgu-repository.worktribe.com/output/977803