전력전송거리 증가를 위한 구형 자속 집중 송신부 구조의 설계 및 해석Spherical Flux Concentration Transmitter for Omnidirectional Wireless Power Transfer with Improved Power Transmission Distance
- Other Titles
- Spherical Flux Concentration Transmitter for Omnidirectional Wireless Power Transfer with Improved Power Transmission Distance
- Authors
- 박광록; 차화랑; 김래영; 김태진
- Issue Date
- Jun-2020
- Publisher
- 전력전자학회
- Keywords
- Wireless power transfer system; Omnidirectional wireless power transfer; Transmitter coil structure
- Citation
- 전력전자학회 논문지, v.25, no.3, pp.181 - 187
- Indexed
- KCI
- Journal Title
- 전력전자학회 논문지
- Volume
- 25
- Number
- 3
- Start Page
- 181
- End Page
- 187
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/145525
- DOI
- 10.6113/TKPE.2020.25.3.181
- ISSN
- 1229-2214
- Abstract
- In this study, we propose a spherical flux concentration structure for omnidirectional wireless power transfer. Omnidirectional wireless power transfer technology is a method that can transmit power to a transmitter located in an arbitrary position in a two-dimensional or three-dimensional space. However, to improve the power transfer distance in a wireless power transfer system, the diameter of the coil or the number of windings must increase, thereby increasing the size of the transmitter. The proposed transmitter structure adds a ferrite core inside the transmitter coil so that the magnetic flux generated by the transmitter is directed toward the position of the receiver. As a result, the flux linkage and the mutual inductance increase. By implementing the omnidirectional wireless power transfer system using the proposed structure, the power transfer distance can be improved by 65% compared with the conventional system without increasing the size of the transmitter. Simulation shows that the proposed spherical flux concentration structure increases the mutual inductance of the omnidirectional wireless power transmission system.
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