NDLI: Comprehensive Analysis and Measurement of Frequency-Tuned and Impedance-Tuned Wireless Non-Radiative Power-Transfer Systems

Content Provider	IEEE Xplore Digital Library
Author	Heebl, J.D. Thomas, E.M. Penno, R.P. Grbic, A.
Copyright Year	1990
Abstract	This paper theoretically and experimentally investigates frequency-tuned and impedance-tuned wireless non-radiative power-transfer (WNPT) systems. Closed-form expressions for the efficiencies of both types of systems are presented as functions of frequency and system (circuit) parameters. In the frequency-tuned system, the operating frequency is adjusted to compensate for changes in mutual inductance that occur for variations of transmitter and receiver loop positions. Frequency-tuning is employed for a range of distances over which the loops are strongly coupled. In contrast, the impedance-tuned system employs varactor-based matching networks to compensate for changes in mutual inductance, and to achieve a simultaneous conjugate impedance match over a range of distances. The frequency-tuned system is simpler to implement, while the impedance-tuned system is more complex, but can achieve higher efficiencies. Both of the experimental wireless non-radiative power-transfer systems studied employ resonant shielded loops as transmitting and receiving devices.
Starting Page	131
Ending Page	148
Page Count	18
File Size	5657665
File Format	PDF
ISSN	10459243
Volume Number	56
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Mutual coupling Resonant frequency Wireless communication Mathematical model Couplings Impedance Tuning Inductive power transmission Magnetic coupling Varactors Power transmission lines varactor tuned circuits inductive power transmission transmission line antennas resonant magnetic coupling wireless power
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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Comprehensive Analysis and Measurement of Frequency-Tuned and Impedance-Tuned Wireless Non-Radiative Power-Transfer Systems

Electronic Tuning of Misaligned Coils in Wireless Power Transfer Systems

Effect of Coupling Between Multiple Transmitters or Multiple Receivers on Wireless Power Transfer

Topology Selection and Efficiency Improvement of Inductive Power Links

Experimental Results of High-Efficiency Resonant Coupling Wireless Power Transfer Using a Variable Coupling Method

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