Frequency splitting patterns in wireless power relay transfer

Wangqiang Niu; Wei Gu; Jianxin Chu; Aidi Shen

Frequency splitting patterns in wireless power relay transfer

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Author(s): Wangqiang Niu ¹ ; Wei Gu ¹ ; Jianxin Chu ¹ ; Aidi Shen ¹
- Affiliations: 1: Scientific Research Academy, Shanghai Maritime University, Shanghai 201306, People's Republic of China
Source: Volume 8, Issue 6, November 2014, p. 561 – 567
DOI: 10.1049/iet-cds.2013.0440 , Print ISSN 1751-858X, Online ISSN 1751-8598

Received 02/01/2014, Accepted 06/07/2014, Revised 03/06/2014, Published 20/11/2014

Frequency splitting patterns in low-order wireless power relay transfer systems are analysed by the coupled-mode theory. In addition to the V-type splitting pattern reported widely, two new patterns, I-type and W-type, are introduced. Specifically, it is found that a 0-relay system shows a V-type or I-type splitting; a symmetrical 1-relay system shows an I-type or W-type splitting; and a symmetrical 2-relay system usually shows a V-type or W-type splitting. The criteria for different frequency splitting patterns are given, and the theoretical results are validated finally by 1-relay and 2-relay wireless power transfer experimental systems.

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