Experimental demonstration of optical wireless power transfer with a DC-to-DC transfer efficiency of 12.1%

Kim, Sung-Man; Rhee, Dong-Hun

doi:10.1117/1.oe.57.8.086108

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…14 There are a few examples of practical OWPT systems exhibiting efficiencies in most cases around and below 10%. [15][16][17] For wireless power transfer on Earth, the range of atmospheric transmission is strongly influenced by both absorption of atmospheric gases and scattering, mainly from water molecules. Both these properties are sensitive to light wavelength (see upper panel in Figure 1).…”

Section: Llmentioning

confidence: 99%

“…As a result of these limitations, most of the previous works on OWPT have focused on presenting functional solutions to specific applications without paying deep attention to the transfer efficiency and ways to increase it. 15 The aforementioned inherent difficulties of wireless systems, to which the need of light beam protection against the interposition of some external influence has to be added, have considerably reduced their use and always for low power levels. Therefore, OWPT systems will not be developed further considered in this review.…”

Section: Llmentioning

confidence: 99%

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Beaming power: Photovoltaic laser power converters for power-by-light

Algora

García

Delgado

et al. 2022

Joule

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Section: Llmentioning

confidence: 99%

Section: Llmentioning

confidence: 99%

Beaming power: Photovoltaic laser power converters for power-by-light

Algora

García

Delgado

et al. 2022

Joule

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“…This approach is similar to POF but without the need for an optical fiber, eliminating the risk of disconnection or breaking the same and, thereby, increasing reliability. Experimental demonstrations of OWPT have been published in [53], [54]. A long-range, free-space power-beaming system with 400 W of power across 325 m has been achieved in the context of military research.…”

Section: ) Optical Linkmentioning

confidence: 99%

Auxiliary Power Supplies for High-Power Converter Submodules: State of the Art and Future Prospects

Heinig

Jacobs

Ilves

et al. 2022

IEEE Trans. Power Electron.

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Recent developments in medium-voltage (MV) silicon and silicon carbide (SiC) power semiconductor devices are challenging state-of-the-art converter and auxiliary power supply (APS) designs. The APS is an important converter component, which energizes the gate-drive units and, therefore, has an influence on the overall reliability and efficiency of the converter system. There has, however, been comparably little research on how the APS of high-power converter submodules can be realized, in particular for high-voltage (HV) applications. New, or improved, solutions may build on state-of-the-art topologies in the near future, but utilize MV SiC technology in the APS circuit itself to enable improved efficiency, reliability, simplicity, and compactness. Externally-fed APS concepts could provide several further advantages. Their various benefits on converter and system level may enable them to be a competitive solution for future APS concepts. Especially light-based power supply systems are considered most useful since they offer extreme voltage isolation capability and immunity to electromagnetic interference.This article presents a review of the wide range of solutions for APSs, possible implementation options, and the most important design considerations. The different solutions are evaluated in a qualitative fashion, providing an overview of available APS concepts with regard to the requirements for high-power converter applications.

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