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Energies 2017, 10(1), 49; doi:10.3390/en10010049

Wireless DC Motor Drives with Selectability and Controllability

1
Department of Electrical and Electronic Engineering, The University of Hong Kong, Hong Kong, China
2
School of Energy and Environment, City University of Hong Kong, Hong Kong, China
*
Author to whom correspondence should be addressed.
Academic Editor: Hongjian Sun
Received: 7 November 2016 / Revised: 20 December 2016 / Accepted: 26 December 2016 / Published: 4 January 2017
(This article belongs to the Special Issue Wireless Power Transfer 2016)
View Full-Text   |   Download PDF [12397 KB, uploaded 4 January 2017]   |  

Abstract

This paper proposes and implements the concept of wireless DC motor drives, which can achieve the abilities of selective driving and controllable speed. Due to different resonant frequencies of the multiple energy receivers of the associated DC motor drives, the transmitter can be purposely tuned to the specified resonant frequency which matches with the specified receiver, hence driving the specified motor selectively. In the meantime, the burst fire control is used to regulate the operating speed of the motor working at the resonant frequency, hence retaining the maximum power transmission efficiency. Both finite element analysis and experimentation are given to verify the validity of the proposed wireless DC motor drive system. For exemplification, three different resonant frequencies, namely 60 kHz, 100 kHz and 140 kHz, are selected to energize three DC motors. Under the burst fire control method, the speed of each motor can be regulated separately and the wireless power transfer (WPT) system can achieve the measured power transmission efficiency of about 60%. View Full-Text
Keywords: magnetic resonance; wireless power transfer; wireless motor; selectability; controllability magnetic resonance; wireless power transfer; wireless motor; selectability; controllability
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Jiang, C.; Chau, K.; Liu, C.; Han, W. Wireless DC Motor Drives with Selectability and Controllability. Energies 2017, 10, 49.

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