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A Novel WPT System Based on Dual Transmitters and Dual Receivers for High Power Applications: Analysis, Design and Implementation

School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
School of Engineering and Computing Sciences, Durham University, Stockton Road, Durham DH1 3LE, UK
Author to whom correspondence should be addressed.
Academic Editor: K.T. Chau
Energies 2017, 10(2), 174;
Received: 14 October 2016 / Revised: 30 December 2016 / Accepted: 19 January 2017 / Published: 4 February 2017
(This article belongs to the Special Issue Wireless Power Transfer 2016)
PDF [5512 KB, uploaded 4 February 2017]


Traditional Wireless Power Transfer (WPT) systems only have one energy transmission path, which can hardly meet the power demand for high power applications, e.g., railway applications (electric trains and trams, etc.) due to the capacity constraints of power electronic devices. A novel WPT system based on dual transmitters and dual receivers is proposed in this paper to upgrade the power capacity of the WPT system. The reliability and availability of the proposed WPT system can be dramatically improved due to the four energy transmission paths. A three-dimensional finite element analysis (FEA) tool ANSYS MAXWELL (ANSYS, Canonsburg, PA, USA) is adopted to investigate the proposed magnetic coupling structure. Besides, the effects of the crossing coupling mutual inductances among the transmitters and receivers are analyzed. It shows that the same-side cross couplings will decrease the efficiency and transmitted power. Decoupling transformers are employed to mitigate the effects of the same-side cross couplings. Meanwhile, the output voltage in the secondary side can be regulated at its designed value with a fast response performance, and the system can continue work even with a faulty inverter. Finally, a scale-down experimental setup is provided to verify the proposed approach. The experimental results indicate that the proposed method could improve the transmitted power capacity, overall efficiency and reliability, simultaneously. The proposed WPT structure is a potential alternative for high power applications. View Full-Text
Keywords: wireless power transfer; power capacity; reliability; high power applications wireless power transfer; power capacity; reliability; high power applications

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Li, Y.; Mai, R.; Lin, T.; Sun, H.; He, Z. A Novel WPT System Based on Dual Transmitters and Dual Receivers for High Power Applications: Analysis, Design and Implementation. Energies 2017, 10, 174.

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