Next Article in Journal
A Low-Cost Add-On Sensor and Algorithm to Help Small- and Medium-Sized Enterprises Monitor Machinery and Schedule Processes
Previous Article in Journal
Attention-Aware Adversarial Network for Person Re-Identification
Article Menu

Export Article

Open AccessArticle
Appl. Sci. 2019, 9(8), 1551; https://doi.org/10.3390/app9081551

An Inverter Topology for Wireless Power Transfer System with Multiple Transmitter Coils

Department of Electrical Engineering, Faculty of Engineering, King Mongkut’s University of Technology Thonburi, Bangkok 10140, Thailand
*
Author to whom correspondence should be addressed.
Received: 7 March 2019 / Revised: 27 March 2019 / Accepted: 11 April 2019 / Published: 14 April 2019
(This article belongs to the Section Electrical, Electronics and Communications Engineering)
  |  
PDF [7241 KB, uploaded 18 April 2019]
  |  

Abstract

This paper presents an inverter topology for a wireless power transfer (WPT) system that is intended to reduce the component counts and complexity of the conventional excitation circuit for multiple transmitter coils. The proposed inverter topology requires only (n+2) power switches, where “n” is the number of transmitter coils. An excitation of a proper transmitter coil pattern with regard to the receiver coil position is determined. The output voltage can be regulated through the primary-side control by adjusting the duty cycles of the inverter switches. A detection method of the receiver coil position is presented using the detection switches on the secondary side. The detection algorithm is based on the reflected impedance knowledge and requires only a current sensor on the primary side. A proper transmitter coil pattern is energized to ensure maximum transfer efficiency throughout the operation. The proposed system is experimentally validated on the created 500-watt WPT multi-coil system. After the receiver coil is placed in a designated area, the proper transmitter coil pattern can be automatically selected and energized. The output voltage can be regulated to a desired value under the typical operation conditions, including load change. View Full-Text
Keywords: inverter topology; wireless power transfer; multiple transmitter coils; primary-side control; output voltage regulation; detection of receiver coil position inverter topology; wireless power transfer; multiple transmitter coils; primary-side control; output voltage regulation; detection of receiver coil position
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Nutwong, S.; Sangswang, A.; Naetiladdanon, S. An Inverter Topology for Wireless Power Transfer System with Multiple Transmitter Coils. Appl. Sci. 2019, 9, 1551.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top