LAPSE:2018.1187
Published Article
LAPSE:2018.1187
Frequency-Splitting-Free Synchronous Tuning of Close-Coupling Self-Oscillating Wireless Power Transfer
Po Hu, Jieshuai Ren, Wenan Li
December 3, 2018
The synchronous tuning of the self-oscillating wireless power transfer (WPT) in a close-coupling condition is studied in this paper. The Hamel locus is applied to predict the self-oscillating points in the WPT system. In order to make the system operate stably at the most efficient point, which is the middle resonant point when there are middle resonant and split frequency points caused by frequency-splitting, the receiver (RX) rather than the transmitter (TX) current is chosen as the self-oscillating feedback variable. The automatic delay compensation is put forward to eliminate the influence of the intrinsic delay on frequency tuning for changeable parameters. In addition, the automatic circuit parameter tuning based on the phase difference is proposed to realize the synchronous tuning of frequency and circuit parameters. The experiments verified that the synchronous tuning proposed in this paper is effective, fully automatic, and more robust than the previous self-oscillating WPT system which use the TX current as the feedback variable.
Keywords
close coupling, frequency-splitting, Hamel locus, self-oscillation, synchronous tuning, wireless power transfer (WPT)
Suggested Citation
Hu P, Ren J, Li W. Frequency-Splitting-Free Synchronous Tuning of Close-Coupling Self-Oscillating Wireless Power Transfer. (2018). LAPSE:2018.1187
Author Affiliations
Hu P: School of Electrical Engineering, Wuhan University, 299 Bayi Road, Wuchang, Wuhan 430072, China
Ren J: School of Electrical Engineering, Wuhan University, 299 Bayi Road, Wuchang, Wuhan 430072, China [ORCID]
Li W: School of Electrical Engineering, Wuhan University, 299 Bayi Road, Wuchang, Wuhan 430072, China
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Journal Name
Energies
Volume
9
Issue
7
Article Number
E491
Year
2016
Publication Date
2016-06-27
Published Version
ISSN
1996-1073
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PII: en9070491, Publication Type: Journal Article
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LAPSE:2018.1187
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doi:10.3390/en9070491
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Dec 3, 2018
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Dec 3, 2018
 
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Calvin Tsay
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