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Special Issue "Latest Papers Related to OWPT 2019-22 on the Topics of Photovoltaic Components, Devices and Systems"

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "B1: Solar Energy and Photovoltaic Systems".

Deadline for manuscript submissions: 31 October 2022 | Viewed by 2982

Special Issue Editors

Prof. Dr. Akira Ishibashi
E-Mail Website
Guest Editor
Research Institute for Electronic Science, Hokkaido University, Sappro, Hokkaido 001-0020, Japan
Interests: nanostructure physics; high efficiency solar cells; asymmetric waveguides; clean systems; next generation energy/environment systems
Prof. Dr. Tomoyuki Miyamoto
E-Mail Website
Guest Editor
Institute of Innovative Research, Tokyo Institute of Technology, Tokyo, Japan
Interests: optical wireless power transmission; light source; light receiver
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Takeo MARUYAMA
E-Mail Website
Guest Editor
College of Science and Engineering, Kanazawa University, Ishikawa 920-1192, Japan
Interests: silicon photonics; semiconductor laser

Special Issue Information

Dear Colleagues,

We are very happy to announce that a Special Issue devoted to photovoltaic components, devices and systems that are of importance for solar-power conversion as well as for optical power transmission is being prepared. In parallel with this Special Issue of Energies, a sister Special Issue of Photonics is also being planned for the latest papers related to OWPT 2019-21 on the topics of photonic technology.

The optical power transmission technologies could be heavily applied, in the near future, to a wide range of applications from, for example, minute IoT terminals, home appliances, and industrial equipment to power transmission infrastructures in various environments for which conventional methods are difficult to apply. Although basic technical functions of these optical power transmission technologies have already been being studied, practical and commercial systems are still in very early stages, and thus, the activation of related research is strongly needed for the developments of many applications. Clarifying both the superiority and the problems of the optical power transmission, we will be able to fully gasp the state of the art of those fields, such as materials, devices, components, and systems that can be used not only for optical power transmission but also for solar-power conversion. We are ready to bring many valuable social benefits to mankind.

Prof. Dr. Akira Ishibashi
Prof. Dr. Tomoyuki Miyamoto
Prof. Dr. Takeo MARUYAMA
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • optical wireless power transmission
  • laser power beaming
  • photoelectric power conversion
  • solar cells
  • photovoltaic devices and systems

Published Papers (3 papers)

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Research

Article
Optical Wireless Power Transmission Using a GaInP Power Converter Cell under High-Power 635 nm Laser Irradiation of 53.5 W/cm2
Energies 2022, 15(10), 3690; https://doi.org/10.3390/en15103690 - 18 May 2022
Cited by 1 | Viewed by 418
Abstract
Optical wireless power transmission (OWPT) system is a technology that supplies energy from remote locations, having some features such as long-distance transmission, high directivity, and no electromagnetic noise interference. This study investigated the optical transmission efficiency and photoelectric conversion efficiency with a transmission [...] Read more.
Optical wireless power transmission (OWPT) system is a technology that supplies energy from remote locations, having some features such as long-distance transmission, high directivity, and no electromagnetic noise interference. This study investigated the optical transmission efficiency and photoelectric conversion efficiency with a transmission distance of 10 m using GaInP power converter cells with a small area of 2.40 × 2.40 mm2 and a 635 nm high-power laser over 50 W/cm2. As a result, we achieved a photoelectric conversion efficiency of 44.7% under 6.7 W/cm2 (0.14 W) and 37.2% under 53.5 W/cm2 (1.1 W) irradiation. These results suggested that W-class optical wireless power transmission could be realized by expanding the converter cell area. Additionally, it was found that the reductions of the divergence angle of the laser and the heat generation of the power converter cell were critical issues for further lengthening the distance and increasing the power. Full article
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Article
Performance Optimization of a Ten Check MPPT Algorithm for an Off-Grid Solar Photovoltaic System
Energies 2022, 15(6), 2104; https://doi.org/10.3390/en15062104 - 13 Mar 2022
Viewed by 680
Abstract
In order to operate a solar photovoltaic (PV) system at its maximum power point (MPP) under numerous weather conditions, it is necessary to achieve uninterrupted optimal power production and to minimize energy losses, energy generation cost, and payback time. Under partial shading conditions [...] Read more.
In order to operate a solar photovoltaic (PV) system at its maximum power point (MPP) under numerous weather conditions, it is necessary to achieve uninterrupted optimal power production and to minimize energy losses, energy generation cost, and payback time. Under partial shading conditions (PSC), the formation of multiple peaks in the power voltage characteristic curve of a PV cell puzzles conventional MPP tracking (MPPT) algorithms trying to identify the global MPP (GMPP). Meanwhile, soft-computing MPPT algorithms can identify the GMPP even under PSC. Drawbacks such as structural complexity, computational complexity, huge memory requirements, and difficult implementation all affect the viability of soft-computing algorithms. However, those drawbacks have been successfully overcome with a novel ten check algorithm (TCA). To improve the performance of the TCA in terms of MPPT speed and efficiency, a novel concept of data arrangement is introduced in this paper. The proposed structure is referred to as Optimized TCA (OTCA). A comparison of the proposed OTCA and classic TCA algorithms was conducted for standard benchmarks. The results proved the superiority of the OTCA algorithm compared to both TCA and flower pollination (FPA) algorithms. The major advantage of OTCA in MPPT stems from its speed as compared to TCA and FPA, with almost 86% and 90% improvement, respectively. Full article
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Article
Power and Spectral Range Characteristics for Optical Power Converters
Energies 2021, 14(15), 4395; https://doi.org/10.3390/en14154395 - 21 Jul 2021
Cited by 7 | Viewed by 1174
Abstract
High-performance optical power converters (OPCs) enable isolated electrical power and power beaming applications at new wavelengths and higher output powers. Broadcom’s vertical epitaxial heterostructure architecture (VEHSA) multi-junction OPCs permit optical-to-electrical conversion at high efficiency and at manageable external loads. This study provides details [...] Read more.
High-performance optical power converters (OPCs) enable isolated electrical power and power beaming applications at new wavelengths and higher output powers. Broadcom’s vertical epitaxial heterostructure architecture (VEHSA) multi-junction OPCs permit optical-to-electrical conversion at high efficiency and at manageable external loads. This study provides details of how the power outputs have been extended from <1 W to a power class at ~3 W and another class at >20 W. The work also provides details of how the spectral range options have been extended from 800–830 nm to other key laser diode wavelengths such as 960–990 nm and 1500–1600 nm. Full article
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