Next Article in Journal
Economics and Resources Analysis of the Potential Use of Reprocessing Options by a Medium Sized Nuclear Reactor Fleet
Previous Article in Journal
Modeling and Validation of a Diesel Engine with Turbocharger for Hardware-in-the-Loop Applications
Previous Article in Special Issue
A Short-Current Control Method for Constant Frequency Current-Fed Wireless Power Transfer Systems
Article Menu
Issue 5 (May) cover image

Export Article

Open AccessArticle
Energies 2017, 10(5), 688; doi:10.3390/en10050688

New Insight of Maximum Transferred Power by Matching Capacitance of a Wireless Power Transfer System

School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, China
*
Author to whom correspondence should be addressed.
Academic Editor: Patrick Hu
Received: 16 February 2017 / Revised: 9 May 2017 / Accepted: 11 May 2017 / Published: 13 May 2017
(This article belongs to the Special Issue Wireless Power Transfer and Energy Harvesting Technologies)
View Full-Text   |   Download PDF [3165 KB, uploaded 13 May 2017]   |  

Abstract

Most research on wireless power transfer (WPT) has been focused on how to achieve a high-efficiency power transfer. Our study found that under the impedance matching for achieving maximum WPT efficiency, the power transferred to the load cannot reach the maximum when a WPT system is supplied by an AC voltage source with constant amplitude. However, the load power or the voltage across the load is essential for a low-power electric device such as the implanted medical device where the transfer efficiency is not the priority to be considered. The paper presents a method for achieving maximum power on the load by matching capacitance in a WPT system with given two-coupled-coils. Three sets of matching capacitances for extreme load power were deduced based on the circuit model considering the coil's resistance, and all these three matching make the WPT system operate at the resonant state. Two sets can make the system achieve the global maximum of load power. One set can make the system achieve the local maximum of load power and reach the power transfer efficiency next to 1. Experimental results verified the theoretical calculations. The results can contribute to the compensation design of a practical WPT system for transferring the maximum power to the load. View Full-Text
Keywords: matching capacitance; maximum load power; wireless power transfer; power transfer efficiency matching capacitance; maximum load power; wireless power transfer; power transfer efficiency
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 alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Xiao, C.; Liu, Y.; Cheng, D.; Wei, K. New Insight of Maximum Transferred Power by Matching Capacitance of a Wireless Power Transfer System. Energies 2017, 10, 688.

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]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top