Analysis and Comparison of Secondary Series- and Parallel-Compensated Inductive Power Transfer Systems Operating for Optimal Efficiency and Load-Independent Voltage-Transfer Ratio

Secondary series- and parallel-compensations are widely used in inductive power transfer (IPT) systems for various applications. These compensations are often studied under some isolated constraints of maximum power transfer, optimal efficiency at a particular loading condition, etc. These constrain...

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Bibliographic Details
Published in:IEEE transactions on power electronics 2014-06, Vol.29 (6), p.2979-2990
Main Authors: Wei Zhang, Siu-Chung Wong, Tse, Chi K., Qianhong Chen
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Compensation
Convertors
Design engineering
Electric currents
Electric, optical and optoelectronic circuits
Electrical engineering. Electrical power engineering
Electrical machines
Electrical power engineering
Electricity distribution
Electronic circuits
Electronics
Energy conversion efficiency
Energy efficiency
Exact sciences and technology
Frequencies
Frequency conversion
Impedance
Inductive power transfer
Loading
loosely coupled transformer
Maximum power transfer
Miscellaneous
Operation. Load control. Reliability
Optimization
Power networks and lines
Power transfer
Q-factor
resonance power converter
Resonant frequency
series-parallel compensation
series-series compensation
Signal convertors
Transfer functions
Transformers
Voltage converters
voltage-transfer function
Zirconium
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Summary:Secondary series- and parallel-compensations are widely used in inductive power transfer (IPT) systems for various applications. These compensations are often studied under some isolated constraints of maximum power transfer, optimal efficiency at a particular loading condition, etc. These constraints constitute an insufficient set of requirements for engineers to select appropriate compensation techniques to be used as a voltage converter with optimal efficiency and loading conditions. This paper studies the characteristics of the IPT system at various frequencies of operation utilizing the two compensation techniques to work as a voltage converter. The frequencies that can provide maximum efficiency of operation and load-independent voltage-transfer ratio are analyzed. The optimal frequencies corresponding to the two compensation techniques are found and compared to facilitate the design of voltage converters with efficient power conversion and load-independent frequency of operation. The analysis is supported by experimental measurements.
ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2013.2273364