Wireless Power Transfer for Variable Load, Distance, and Power Division Ratio in a Loosely-Coupled Multiple-Receiver Relay System
- Authors
- Cho, Jung-Hoon; Jung, Sunghun; Kim, Young-Joon
- Issue Date
- Jul-2023
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- Couplings; Impedance; Inductance; Multiple load; multiple-receiver; multiple-relay; Receivers; Relays; Resistance; Resonators; wireless power transfer
- Citation
- IEEE Transactions on Industrial Electronics, v.70, no.7, pp 6809 - 6818
- Pages
- 10
- Journal Title
- IEEE Transactions on Industrial Electronics
- Volume
- 70
- Number
- 7
- Start Page
- 6809
- End Page
- 6818
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/87658
- DOI
- 10.1109/TIE.2022.3201302
- ISSN
- 0278-0046
1557-9948
- Abstract
- This paper proposes a wireless power transfer (WPT) system for variant receiver (Rx) configuration, power distribution ratio, load and distance with multiple relays, each of which is connected to a resistive load. Each Rx relay transfers power to an adjacent Rx and acts as a relay while its local load consumes power. We develop a methodology for the design of wireless power transfer resonators that achieve optimum efficiency for multiple receivers with power distribution ratios, loads, and distances. The WPT configuration is extended to a general m×n, 2-dimensional grid for a large area coverage. A mathematical model of the proposed WPT system is provided, and a multiple-Rx wireless power network using a power inverter serves as a proof-of-concept. Following the design guidelines provided in this paper, experimental examples with variable parameters while delivering a total power of 100 W are discussed. To illustrate the practical applicability of this approach, a demonstration on a consumer display and speaker device is performed. IEEE
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