Papers - SAKODA Tatsuya
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太田 靖之, 迫田 達也
宮崎大学工学部紀要 49 119 - 127 2020.9
Language：English Publishing type：Research paper (bulletin of university, research institution) Publisher：宮崎大学工学部
Generally, the performance of a PV system depends not only on its basic technical characteristics but also on the environmental conditions in which they will be set up. Therefore, studying the effects of climatic parameters such as solar irradiance on the plane of array (GPOA), ambient temperature (Ta), relative humidity (RH) and wind speed (νa) on the performance of PV is vital to be able to utilize efficiently solar energy.
The authors have studied the effects of various climatic parameters on the output performances of the two PV systems, 60 kW Copper Indium Gallium Selenide (CIGS) and 50 kW Multi-Crystalline Silicon (MC-Si), which were installed within the campus of University of Miyazaki, Japan. The main objectives of the research are to improve the prediction of the PV systems performance while knowing the climatic parameters of a particular area in which they stand, and also provide a useful dataset for the comparative studies.
The analyses were done by the multiple linear regression analysis (MLR) using the statistical software R. The performances of the two PV systems are in positive proportion to the GPOA and νa, however, as per the values of the slopes of the regression equations, the MC-Si PV system is smaller than the CIGS PV system, attributed to their different module tilt angles and elevations of the PV sites. The performances are in negative proportion to the Ta, but the more sensitivity can be observed in the MC-Si PV system. The RH negatively affected on the MC-Si PV system, although its positive effects can be observed in the CIGS PV system. -
Study on Location Accuracy of Partial Discharge Locator for Electric Power Cable Reviewed
Yamashita Katsuya, Sakoda Tatsuya
Memoirs of Faculty of Engineering, University of Miyazaki 49 91 - 94 2020.9
Language：Japanese Publishing type：Research paper (scientific journal)
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Study on Location Accuracy of Partial Discharge Locator for Electric Power Cable
Katsuya YAMASHITA, Tatsuya SAKODA
Memoirs of Faculty of Engineering University of Miyazaki 91 - 94 2020.7
Language：Japanese Publishing type：Research paper (bulletin of university, research institution)
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Study on Propagation Characteristics of High Frequency Pulse Current in Electric Power Cable
Katsuya YAMASHITA, Tatsuya SAKODA
Memoirs of Faculty of Engineering University of Miyazaki 95 - 100 2020.7
Language：Japanese Publishing type：Research paper (bulletin of university, research institution)
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Partial Discharge Characteristics of XLPE Cable with Water Tree
Yuhei YAMASAKI, Katsuya YAMASHITA, Tatsuya SAKODA
Memoirs of Faculty of Engineering University of Miyazaki 101 - 104 2020.7
Language：Japanese Publishing type：Research paper (bulletin of university, research institution)
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Characteristics of Partial Discharge in Epoxy Resin with a Void
Hiroshi ODA, Tatsuya SAKODA, Takeru AISHIMA, Takeshi NISHIMURA
Memoirs of Faculty of Engineering University of Miyazaki 105 - 110 2020.7
Language：Japanese Publishing type：Research paper (bulletin of university, research institution)
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Affecting Factors to V-t Characteristics of Impulse Discharge
Hiroshi ODA, Issei HAZAMA, Tatsuya SAKODA, Katsutaka KUBO, Manabu MIZUTANI, Yasunori KASUGA, Takato FUKANO
Memoirs of Faculty of Engineering University of Miyazaki 111 - 114 2020.7
Language：Japanese Publishing type：Research paper (bulletin of university, research institution)
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Sterilization of Stem-end Rot of Mango using Dielectric Barrier Discharge Source and Influence of Operating Gas on sterilization
Shunsuke KINOSHITA, Yoichiro TADA, Tatsuya SAKODA, Kazutoshi TAZAWA, Hiroyuki ICHIKAWA
Memoirs of Faculty of Engineering University of Miyazaki 115 - 118 2020.7
Language：Japanese Publishing type：Research paper (bulletin of university, research institution)
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Multivariate Analysis Using R for Various Climatic Effects on the Output Performances of CIGS and Multi-Crystalline Si Photovoltaic Systems Installed in Miyazaki, Japan
Kyaw Myo WIN, Yasuyuki OTA, Kensuke NISHIOKA, Tatsuya SAKODA, Noriyuki HAYASHI
Memoirs of Faculty of Engineering University of Miyazaki 119 - 128 2020.7
Language：English Publishing type：Research paper (bulletin of university, research institution)
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Study on degradation diagnostic method for silicone rubber Reviewed
Tatsuya Sakoda, Eisuke Minami, Takuma Miyake, Noriyuki Hayashi, Shigehiko Goto, Yoshiaki Aka, Tomikazu Anjiki, Yasunori Kasuga, Takato Fukano
Journal of Electrostatics 107 103479-1 - 103479-6 2020.6
Language：English Publishing type：Research paper (scientific journal)
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ケーブルにおける 部分放電の位置標定技術 Reviewed
山下勝也，三宅琢磨，迫田達也，川野渉, 宮川浩二
電気設備学会論文誌 40 ( 4 ) 14 - 19 2020.4
Language：Japanese Publishing type：Research paper (scientific journal)
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架橋ポリエチレンケーブルの防蟻層の遮水効果 Reviewed
黒岩 拓真, 迫田 達也, 有元 慎太郎, 生田 昌輝
電気設備学会論文誌 40 ( 3 ) 12 - 13 2020.3
Language：Japanese Publishing type：Research paper (scientific journal)
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分岐線路における部分放電電流パルスの伝搬特性 Reviewed
山下勝也, 三宅琢磨, 迫田 達也, 川野渉
電気学会論文誌A 140 ( 2 ) 92 - 97 2020.2
Language：Japanese Publishing type：Research paper (scientific journal)
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Study on Water Barrier Effect of Termite preventive Layer of XLPE Cable
Kuroiwa Takuma, Sakoda Tatsuya, Arimoto Shintaro, Ikuta Masateru
The Transactions of the Institute of Electrical Installation Engineers of Japan 40 ( 3 ) 12 - 13 2020
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Installation Engineers of Japan
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Propagation Characteristics of Partial Discharge Current Pulse for Branched Line
Yamashita Katsuya, Miyake Takuma, Sakoda Tatsuya, Kawano Wataru
IEEJ Transactions on Fundamentals and Materials 140 ( 2 ) 92 - 97 2020
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan
At joint and terminal sections of electric power cables, there is possibility to occur partial discharges (PDs) in defects of insulating materials. Therefore, PD measurement is useful from a viewpoint of assessing insulation deterioration of electric power cables. There are some measurement systems to locate PDs, however, it is quite difficult and complicated in the case where cable lines include branched lines because the PD current pulse separately flows at the branch line. To establish a PD location system, the investigation of propagation characteristics of PD current pulse for branched lines is necessary. Based on EMTP simulations and experiments, we evaluated how a PD current pulse propagates at a Y-branch. The results showed that the separation of a PD current pulse is dependent on frequency component of the PD current pulse and the cable impedance after branching. The frequency components of a PD current pulse, which are higher than the resonant frequency of lines, tend to flow into the longer cable side.
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Development of Partial Discharge Locator for XLPE Cables using GPS
Yamashita Katsuya, Miyake Takuma, Sakoda Tatsuya, Kawano Wataru, Miyagawa Koji
The Transactions of the Institute of Electrical Installation Engineers of Japan 40 ( 4 ) 14 - 19 2020
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Installation Engineers of Japan
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部分放電電流の分岐伝搬特性に関する基礎的検討
山下勝也, 山﨑悠平, 三宅琢磨, 迫田達也, 川野渉
放電・プラズマ・パルスパワー研究会・放電・プラズマ・パルスパワー 2019.10
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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マンゴー軸腐病の防除手法の検討
多田陽一朗,木之下俊輔,迫田達也,田澤和俊,市川博章
放電・プラズマ・パルスパワー研究会・放電・プラズマ・パルスパワー 2019.10
Language：Japanese Publishing type：Research paper (conference, symposium, etc.)
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Electrical characteristics of artificially polluted silicone rubber Reviewed
TAKEZAKI Kento, MIYAKE Takuma, SAKODA Tatsuya, GOTO Shigehiko, AKA Yoshiaki, and ANJIKI Tomikazu
The International Council on Electrical Engineering (ICEE) Conference 2019.7
Language：English Publishing type：Research paper (international conference proceedings)
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Propagation Characteristics of Partial Discharge Pulse Current on Branched Line
Katsuya YAMASHITA, Takuma MIYAKE, Tatsuya SAKODA, Wataru KAWANO
MEMOIRS OF FACULTY OF ENGINEERING UNIVERSITY OF MIYAZAKI 99 - 102 2019.7
Language：Japanese Publishing type：Research paper (bulletin of university, research institution)