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Effect of inductor types and shapes on the characteristics of an inorganic EL driven by wireless power transfer

Authors :
Daiki Sato
Taisei Kitawaki
Koichi Wani
Shin-ichi Yamamoto
Source :
Japanese Journal of Applied Physics. 61:SL1010
Publication Year :
2022
Publisher :
IOP Publishing, 2022.

Abstract

A wireless power transfer (WPT) circuit was developed for an inorganic electro-luminescent (EL) device. When transmission and receiver circuits are both in resonant mode, low operating voltage of 30 V was enough to achieve the EL luminance as high as 180 cd m−2. As for the transmission and the receiver coils, different types and shapes are studied to clarify those effects on the EL luminance and transmission efficiency. Solenoid coils generally presented higher luminance than other types. Polygonal solenoid coils resulted in even higher luminance and transmission efficiency than circular solenoids. A spiral or a spider coil, in which air core area is much smaller than the solenoid coil, was found to be less sensitive to coil displacement. The difference in EL performances with the variation of coils suggests the possibility of further improvement the WPT system.

Details

ISSN :
13474065 and 00214922
Volume :
61
Database :
OpenAIRE
Journal :
Japanese Journal of Applied Physics
Accession number :
edsair.doi...........3b642e1b97cf3e0d43ec703860f1639f
Full Text :
https://doi.org/10.35848/1347-4065/ac66bf