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

作者：Dai, Xin^*; Jiang, Jincheng; Li, Yanling; Yang, Ting

来源：Energies, 2017, 10(7): 1000.

DOI：10.3390/en10071000

• wireless power transfer
• dual excitation units
• impedance analysis
• phase-shifted

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%.

• 出版日期2017-7
• 单位重庆大学