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Title: Self-oscillating resonant converter with contactless power transfer and integrated current sensing transformer
Authors: Xu, LG
Chen, QH
Ren, XY
Wong, SC 
Tse, CK 
Keywords: Inductive power transfer (IPT)
Magnetic integration
Self-oscillating resonant converter
Wireless power transfer
Issue Date: 2017
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on power electronics, 2017, v. 32, no. 6, p. 4839-4851 How to cite?
Journal: IEEE transactions on power electronics 
Abstract: In this paper, an integrated transformer is proposed to provide current sensing in the primary side and passive current phase detection for a self-oscillating contactless resonant converter (SOCRC). The proposed transformer integrates power transfer and current sensing. By using the secondary current phase of a series/series-compensated resonant converter in the control of the inverter, better output controllability, dynamic response, and self-adaptability can be achieved simultaneously. The integrated current sensing winding, being a crucial part of SOCRC, is analyzed in detail. In order to make the output voltage insensitive to the clearance and misalignment conditions, the requirement of the new integrated transformer is given. Experimental results of an 80-W SOCRC prototype verify the analytical results.
ISSN: 0885-8993
EISSN: 1941-0107
DOI: 10.1109/TPEL.2016.2598556
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