2022 Fiscal Year Final Research Report
A Study on Effects of Partial Shadows and Countermeasures while running on Solar-Powered Vehicles
Project/Area Number |
19K04338
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 21010:Power engineering-related
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Research Institution | Sojo University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
坂井 栄治 崇城大学, 情報学部, 教授 (10196032)
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Project Period (FY) |
2019-04-01 – 2023-03-31
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Keywords | 太陽電池 / 車載太陽光発電 / 部分影 / MPPT制御 / 日射量測定 |
Outline of Final Research Achievements |
A prototype of a new distributed power generation system proposed to prevent a reduction in power generation due to partial shadows and mud stains that occur while an on-board solar power generation runs achieved a maximum efficiency of about 95%. In order to realize a flexible power supply circuit, we made a flexible coil using a flexible magnetics sheet for wireless charging. As a result, we were able to obtain the same power efficiency as a conventional coil. A new high-speed control method devised follow instantaneous changes in solar radiation while traveling, which was able to follow target changes of 10 ms. Another advantage of this method is that constructing distributed power generation system at a low cost since existing control ICs can be reused. We developed a device that can measure the amount of solar radiation at high speed, up to 20 % power generation improvement is obtained as a result of simulating using real data from actual driving.
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Free Research Field |
電力工学関連
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Academic Significance and Societal Importance of the Research Achievements |
これまでにシール形電力変換回路の開発例はなく、“湾曲面にも貼れる”“振動に強い”“室内空間を邪魔しない” といった、独創的な特徴を持つ太陽光発電システムが実現できた。シール形電力変換回路は、自動車のみならず、宇宙衛星やドローンなど様々な移動体、IoT端末やウエアラブル端末に対して、薄型軽量で湾曲性のある電力変換回路を提供できるので、広範囲に波及効果をもたらす可能性がある。 また、10msの瞬間的な日射量変化に追従できる高速制御法を考案でき、シミュレーションによって発電量を20%以上改善できる可能性を示せたことで、自動車用ソーラー発電システムの開発者に対して具体的かつ明瞭な知見を示すことができた。
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