Concurrent Wireless Power Transfer to Multiple Receivers with Additional Resonant Frequencies and Reduced Power Switches

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Original languageEnglish
Number of pages10
Journal / PublicationIEEE Transactions on Industrial Electronics
Online published15 Nov 2019
Publication statusOnline published - 15 Nov 2019


This paper presents a wireless power transfer (WPT) system, which can deliver the power to multiple receivers concurrently with the additional resonant frequencies and reduced power switches. It employs three-phase high frequency inverter with delta type transmitting tanks. In this way, this WPT system can transfer the power with different resonant frequencies to multiple receivers simultaneously. Compared with the typical multiple-frequency and multiple-receiver WPT system, the proposed WPT system can save considerable amount of power switches. In addition, three additional resonant frequencies can be obtained by the set-up original equivalent resonant tank in transmitting side without any change. Three modes, namely the single frequency transmission, concurrent frequency transmission, and additional frequency transmission, are performed and analyzed in detail. Finally, a test rig is built up to verify the performances of six independent frequencies, six kinds of concurrent double frequencies, and one concurrent ternary frequency transmission, with one dealt type transmitting tank.

Research Area(s)

  • Wireless power transfer (WPT), multiple loads, multiple frequencies, additional frequency, power switches, delta type transmitting tank