Wireless Powering for Glass-Laminated Functionalities

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

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Abstract

This paper introduces a safe, high efficiency, small size wireless power transfer (WPT) system with extremely thin power receiver capable of supplying up to 30W electric DC power for lighting, display, sensing and communication functionalities inside glass laminates. When compared to the existing WPT systems such as those based on the Qi low power specification of the Wireless Power Consortium, the main differences of the technical implementation for better applicability to glass laminate applications are a novel self-regulating antenna tuning solution and relatively high (6.78 MHz) operation frequency. The self-regulating antenna tuning solution keeps the receiver output voltage nearly stable and maintains high efficiency by keeping the antennas in resonance with variable loading of the power receiver. The WPT system is based on a class-D topology RF inverter at the power transmitter side. The safety of the WPT system to nearby humans and electrical devices is ensured by ferrite shielding of the antenna coupler. The performance of the WPT system has been evaluated by theoretical analysis, circuit simulations and a preliminary experimental system. The simulations show 57 % total DC-to-DC power transfer efficiency with the nominal 30 W receiver output power, which probably can be improved by refining the design of the RF inverter.
Original languageEnglish
Title of host publicationAll Eyes on Smarter Glass
Subtitle of host publicationGlass Performance Days 2019
Pages232-235
Publication statusPublished - 2019
MoE publication typeB3 Non-refereed article in conference proceedings
EventAll Eyes on Smarter Glass, Glass Performance Days 2019 - Tampere, Finland
Duration: 26 Jun 201928 Jun 2019

Conference

ConferenceAll Eyes on Smarter Glass, Glass Performance Days 2019
CountryFinland
CityTampere
Period26/06/1928/06/19

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