Maximum Energy Efficiency Operation of Series-Series Resonant Wireless Power Transfer Systems Using On-Off Keying Modulation
File(s)
Accepted version
Author(s)
Zhong, W
Hui, SYR
Type
Journal Article
Abstract
Maximum energy efficiency in wireless power transfer (WPT) systems can be achieved through the use of magnetic resonance technique at a certain load resistance value. However, practical load resistance is not constant. Previously, a switched mode dc-dc converter was used in the receiver circuit to emulate an equivalent load resistance for maximum energy efficiency. In this paper, a new approach based on the On-Off Keying is proposed to achieve the high energy efficiency operation over a wide range of load power without using an impedance-matching dc-dc power converter. This simple and effective method has reduced average switching frequency and switching losses. It can be applied to any series-series resonant WPT system designed to operate at a constant output voltage. Practical measurements have confirmed the validity of the proposal.
Date Issued
2017-05-29
Date Acceptance
2017-05-19
Citation
IEEE Transactions on Power Electronics, 2017, 33 (4), pp.3595-3603
ISSN
0885-8993
Publisher
IEEE
Start Page
3595
End Page
3603
Journal / Book Title
IEEE Transactions on Power Electronics
Volume
33
Issue
4
Copyright Statement
© 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Subjects
0906 Electrical And Electronic Engineering
Electrical & Electronic Engineering
Publication Status
Published
Date Publish Online
2017-05-29