Title
A Control Strategy for Efficiency Optimization and Wide ZVS Operation Range in Bidirectional Inductive Power Transfer System
Abstract
The efficiency of bidirectional inductive power transfer (BIPT) systems is strongly dependent on the load. Besides, the soft-switching operation of power switches is critical to high-frequency converter in the BIPT systems. In this paper, a triple-phase-shift (TPS) control strategy is proposed to achieve load matching while realizing zero voltage switching (ZVS) for all power switches within the entire power range. The load matching condition of the BIPT system with double-sided <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LCC</italic> compensation network is analyzed. And a dual side phase shift control is proposed to adjust power flow while realizing load matching. To realize ZVS operation, the third phase shift between primary and secondary side is introduced as an extra control variable. A time domain model of double-sided <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LCC</italic> compensation network is established to analyze the ZVS range. With the proposed TPS control, wide ZVS operation range of the system can be achieved while maintaining load matching. At last, a scale down prototype of 1 kW BIPT system is developed. The experimental results show good agreement with theoretical analysis, all switches realize ZVS within the entire power range and a peak efficiency of 94.83% is achieved.
Year
DOI
Venue
2019
10.1109/tie.2018.2871794
IEEE Transactions on Industrial Electronics
Keywords
Field
DocType
Zero voltage switching,Bridge circuits,Inductors,Load flow,Impedance,Receivers,Time-domain analysis
Time domain model,Load balancing (electrical power),Power flow,Control theory,Inductor,Electrical impedance,Control variable,Engineering,Maximum power transfer theorem,Phase shift control
Journal
Volume
Issue
ISSN
66
8
0278-0046
Citations 
PageRank 
References 
1
0.41
0
Authors
7
Name
Order
Citations
PageRank
Xiaoming Zhang126335.42
Tao Cai271.68
Shanxu Duan318229.71
Hao Feng471.34
Hongsheng Hu511.09
Jintao Niu610.75
Changsong Chen772.69