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A Differential Relaxation Oscillator for Inductive Power Transfer

  • We present a novel differential relaxation oscillator for inductive power transfer. The proposed oscillator offers an automatic adaption of the oscillation period to a change in the power link impedance, which ensures a high efficient operation for variable loads and coupling factors. A detailed circuit model of the self-oscillation system is provided with analytical design equations. We find a large self-oscillation range for variable coupling factors and loads. The theoretical results are confirmed by circuit simulation and measurements carried out on a low-power demonstrator system. We demonstrate non-resonant and robust self-adaption of the relaxation oscillator to coupling factors ranging from k=0.6-0.9.

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Metadaten
Author:Norbert SeligerORCiD
Parent Title (English):2022 IEEE Industrial Electronics and Applications Conference (IEACon)
Publisher:IEEE
Document Type:Conference Proceeding
Language:English
Publication Year:2022
Tag:Inductive Power Transfer; Relaxation Oscillator
First Page:1
Last Page:6
faculties / departments:Fakultät für Ingenieurwissenschaften
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 62 Ingenieurwissenschaften / 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten