A Maximum Power Transfer Tracking Method for WPT Systems with Coupling Coefficient Identification Considering Two-Value Problem

Maximum power transfer tracking (MPTT) is meant to track the maximum power point during the system operation of wireless power transfer (WPT) systems. Traditionally, MPTT is achieved by impedance matching at the secondary side when the load resistance is varied. However, due to a loosely coupling ch...

Full description

Saved in:
Bibliographic Details
Published in:Energies (Basel) 2017-10, Vol.10 (10), p.1665
Main Authors: Dai, Xin, Li, Xiaofei, Li, Yanling, Deng, Pengqi, Tang, Chunsen
Format: Article
Language:English
Subjects:
coupling coefficient
Coupling coefficients
Efficiency
Electric converters
Electric potential
Electric vehicles
Identification
Impedance
Impedance matching
Load resistance
Maximum power transfer
maximum power transfer tracking (MPTT)
Passive components
Voltage
Voltage converters (DC to DC)
wireless power transfer (WPT)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Maximum power transfer tracking (MPTT) is meant to track the maximum power point during the system operation of wireless power transfer (WPT) systems. Traditionally, MPTT is achieved by impedance matching at the secondary side when the load resistance is varied. However, due to a loosely coupling characteristic, the variation of coupling coefficient will certainly affect the performance of impedance matching, therefore MPTT will fail accordingly. This paper presents an identification method of coupling coefficient for MPTT in WPT systems. Especially, the two-value issue during the identification is considered. The identification approach is easy to implement because it does not require additional circuit. Furthermore, MPTT is easy to realize because only two easily measured DC parameters are needed. The detailed identification procedure corresponding to the two-value issue and the maximum power transfer tracking process are presented, and both the simulation analysis and experimental results verified the identification method and MPTT.
ISSN:1996-1073
1996-1073
DOI:10.3390/en10101665