Paper Info
Title
Active Class E Rectifier for DC Output Voltage Regulation in Megahertz Wireless Power Transfer Systems
Abstract
In real applications, it is usually desirable to have a regulated dc output voltage from a wireless power transfer (WPT) system. This voltage regulation is especially necessary because of possible variation in coupling coil relative position and thus a changing mutual inductance. For WPT systems working at megahertz (MHz), Class E rectifiers are known to be advantageous, thanks to their simple configuration and soft-switching operation. In this paper, we propose a new Class-E-based active rectifier. This rectifier is capable to simultaneously perform high-efficiency rectification and output voltage regulation, but without the need to have an additional regulating circuit. Analytical derivations and analysis are provided to explain the operation principle in detail. Guidance is also developed for a balanced design of parameters, which compromises among different criteria. Final experiments validate the analytical analysis and dc output voltage regulation via the active rectifier. With the duty cycle control of the rectifier, a constant output voltage (10 V) can be maintained under a varying mutual inductance coefficient and with more than 92% rectifying efficiency.
Year
DOI
Venue
2020
10.1109/TIE.2019.2920473
IEEE Transactions on Industrial Electronics
Keywords
Field
DocType
Voltage control,Capacitors,Integrated circuits,Impedance,Couplings,Inductance,Topology
Wireless power transfer,Rectification,Rectifier,Inductance,Control theory,Duty cycle,Voltage,Voltage regulation,Electromagnetic coil,Engineering,Electrical engineering
Journal
Volume
Issue
ISSN
67
5
0278-0046
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
Ming Liu127650.00
Jibin Song200.68
Chengbin Ma32014.81