A Phase-Shifted Control for Wireless Power Transfer System by Using Dual Excitation Units

Xin Dai, Jincheng Jiang, Yanling Li and Ting Yang
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Xin Dai: School of Automation, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400030, China
Jincheng Jiang: School of Automation, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400030, China
Yanling Li: School of Automation, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing 400030, China
Ting Yang: No. 24 Research Institute of CETC, Nanping Huayuan Road No. 14, Nan’an District, Chongqing 400060, China

Energies, 2017, vol. 10, issue 7, 1-16

Abstract: Wireless power transfer (WPT) technology can provide intelligent robots with a flexible, robust, and safe power supply, especially in very harsh environments including high humidity and high temperature. To meet increasing power requirement for robotic applications, this paper proposes a novel method to increase system power transfer capability without increasing voltage and current stress, realized by using dual excitation units at the primary side. On this basis, this paper proposes a phase-shifted control method for output power regulation which can keep efficiency high. At the same time, the system is proved to have a better output robust characteristic by analysis under the condition of parameter variation. Finally, experimental results show the proposed dual excitation units (DEU)-WPT system can increase output power by at least three times compared to classical WPT system, and the efficiency is improved by 9%.

Keywords: wireless power transfer; dual excitation units; impedance analysis; phase-shifted (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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