LAPSE:2018.0450
Published Article
LAPSE:2018.0450
Effects of Foreign Metal Object on Soft-Switching Conditions of Class-E Inverter in WPT
Wenxun Xiao, Ruigeng Shen, Bo Zhang, Dongyuan Qiu, Yanfeng Chen, Tian Li
September 19, 2018
A foreign metal object will deteriorate the performance of wireless power transfer (WPT) systems and cause insecurity issues. Therefore, the influence principles and rules of foreign metal objects on soft-switching conditions of Class-E inverters and the performance of WPT systems are developed in this paper. The effects of different metal materials on coil parameters at different frequencies and positions are analyzed first, then the effects of foreign metal objects on soft-switching conditions of Class-E inverters and the power transfer capability of WPT systems are investigated. Principle analyses and simulation results demonstrate that there are significantly different effects on the soft-switching conditions and power transfer when a foreign metal object is placed near the transmitter coil or the receiver coil. In addition, the monotonicity of the variation in power transfer also depends on the position of the foreign metal object. Finally, a WPT experimental prototype with a Class-E inverter is implemented to verify the influence principles and rules of foreign metal objects. The experimental results are highly consistent with the principle analyses and simulation results.
Keywords
Class-E inverter, foreign metal object, soft-switching conditions, wireless power transfer
Suggested Citation
Xiao W, Shen R, Zhang B, Qiu D, Chen Y, Li T. Effects of Foreign Metal Object on Soft-Switching Conditions of Class-E Inverter in WPT. (2018). LAPSE:2018.0450
Author Affiliations
Xiao W: School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
Shen R: School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
Zhang B: School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
Qiu D: School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
Chen Y: School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
Li T: School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
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Journal Name
Energies
Volume
11
Issue
8
Article Number
E1926
Year
2018
Publication Date
2018-07-24
Published Version
ISSN
1996-1073
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Original Submission
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PII: en11081926, Publication Type: Journal Article
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LAPSE:2018.0450
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doi:10.3390/en11081926
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Sep 19, 2018
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Sep 19, 2018
 
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Calvin Tsay
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