論文 - 迫田 達也
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電気二重層キャパシタの劣化要因に関する考察 査読あり
吉玉拓, 春田篤二, 田島大輔, 迫田達也
電気学会論文誌A 134 ( 10 ) 525 - 531 2014年10月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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GAS-LIQUID INTERFACIAL DISCHARGE WITH A POROUS GLASS MEMBRANE 査読あり
T. SAKODA and T. MINE
Proceedings of the XXth International Conference on Gas Discharges and their Applications 562 - 565 2014年7月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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Compensation of output power characteristics of a partly-malfunctioned thermoelectric generator system by using a diode bypass circuit 査読あり
Masatoshi Oku, Daisuke Tashima, Tatsuya Sakoda, Noriyuki Hayashi
Proceedings of International Conference on Electrical Engineering 2014 384 - 389 2014年6月
記述言語：英語 掲載種別：研究論文（国際会議プロシーディングス）
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クロスボンド接続を有するケーブルにおける部分放電位置標定法に関する基礎的検討 査読あり
北島純一, 迫田達也, 渡部清範
電気学会論文誌A 134 ( 6 ) 428 - 429 2014年6月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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多孔質ガラス膜を用いた水中放電プラズマ発生装置の特性 査読あり
塩満栄一, 迫田達也
電気学会論文誌A 134 ( 5 ) 321 - 326 2014年5月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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Basic characteristics of a heat and electricity combined generation system using biomass fuel
Oku M., Sakoda T., Hayashi N., Tashima D.
3rd International Conference on Renewable Energy Research and Applications, ICRERA 2014 222 - 228 2014年1月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：3rd International Conference on Renewable Energy Research and Applications, ICRERA 2014
© 2014 IEEE. In this paper, we propose a unique co-generation system including a biomass boiler-using a thermoelectric generator (TEG). The boiler burned biomass fuel derived from a cow dung. In this system, warm water is generated through heat exchange in the boiler, and electricity is generated through the TEG that uses the high temperature of an exhaust gas from the boiler. In this study, the co-generation system was not well optimized, with the result that both the heat exchange efficiency of the biomass boiler and hence, - the amount of electric power generated were very low. However, the study demonstrated that the co-generation system that using the biomass as a heat source, and a TEG as an electric power generator can provide an effective energy source.
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Basic study on partial discharge location for cross-bonding cables
Kitajima J., Sakoda T., Watanabe K.
IEEJ Transactions on Fundamentals and Materials 134 ( 6 ) 428 - 429 2014年
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：IEEJ Transactions on Fundamentals and Materials
To locate partial discharges (PDs) in cross-bonding cables where current pulses due to PDs might be divided, we paid attention to phases of current pulses obtained by six CT sensors arranged at both sides of 3-phase of the cables. The accuracy of PD location, obtained by using time difference between arrival times of current pulses from specified phase, was relatively high even for cross-bonding cables. © 2014 The Institute of Electrical Engineers of Japan.
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Characteristics of an underwater plasma source with a porous glass membrane
Shiomitsu E., Sakoda T.
IEEJ Transactions on Fundamentals and Materials 134 ( 5 ) 321 - 326 2014年
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：IEEJ Transactions on Fundamentals and Materials
Advanced oxidation process (AOP) with hydroxyl radicals (OH) is considered to be useful for water purification through oxidation; therefore, we proposed an underwater plasma source with a porous glass membrane which functioned in bubble supply and the formation of micro-discharges. We observed bubble formation and light emission from discharge on the surface of the membrane using a high-speed camera and a spectroscope, respectively. Additionally, dependence of gas pressure on generation of OH radical and decomposition of recalcitrant organic matter were examined. The obtained results showed that AOP might be more effective when the operating gas pressure was set higher than a pressure which could form bubbles. © 2014 The Institute of Electrical Engineers of Japan.
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Study on deterioration factors of an electric double-layer capacitor
Yoshitama H., Haruta A., Tashima D., Sakoda T., Hayashi N.
IEEJ Transactions on Fundamentals and Materials 134 ( 10 ) 525 - 531 2014年
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：IEEJ Transactions on Fundamentals and Materials
© 2014 The Institute of Electrical Engineers of Japan. Electric double-layer capacitors (EDLCs) have the advantages of much longer life and unnecessary maintenance. However, for EDLCs used for a long period, a decrease of electrostatic capacity and an increase in internal resistance are recognized. In this study, in order to clarify the factors responsible for the deterioration of EDLCs used for a long period, chemical analysis was conducted on each component such as an activated carbon electrode and an electrolytes solution. The obtained data were compared with those from a new EDLC. The results showed that long-term use reduced electrostatic capacity about 5% and made internal resistance increase by about 1.7 times. The quantity of oxygen due to surface functional groups of the activated carbon electrode was confirmed using electron spectroscopy for chemical analysis (ESCA). As compared with results obtained from a new EDLC, long-term use made the ratio of O-C=O deriving from carboxyl group (-COOH) to C-C increase 1.2 times. The ratio of C-O deriving from hydroxyl group (-OH) to C-C also increased 1.4 times. In addition, it was found that BET surface area decreased about 40% and that pores whose diameter was in the range between 0.8 to 20 nm disappeared.
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Influence on bleaching characteristics by different discharge form for a passing water-type ozonizer
Shiomitsu E., Ariyoshi J., Fuji S., Sakoda T., Kijima J., Nakashima H.
IEEJ Transactions on Fundamentals and Materials 133 ( 11 ) 606 - 607 2013年11月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：IEEJ Transactions on Fundamentals and Materials
Advanced oxidation process (AOP) with hydroxyl radicals (OH) is considered to be useful for water purification through oxidation; therefore, we proposed a useful passing water-type ozonizer, which could generate discharges even on the liquid surface. We first observed optical emissions due to the discharges and then confirmed the existence of O and OH radicals. Next, decomposition of Methylene Blue was examined. When the discharge was generated between a glass electrode and liquid, the AOP was achieved. The obtained results also indicated that various decomposition and treatment would be possible by selecting discharge form for our passing water-type ozonizer.
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通水型オゾナイザの放電形態が脱色特性に与える影響 査読あり
塩満栄一, 有吉純也, 藤真介, 迫田達也, 貴島純次, 中島秀之
電気学会論文誌A 133 ( 11 ) 606 - 607 2013年11月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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Influence of triple-junction on sparkover voltage for a series gap of arrester
Tokunaga T., Nishikawa S., Sakoda T., Fukano T.
2013 IEEE Electrical Insulation Conference, EIC 2013 110 - 113 2013年9月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：2013 IEEE Electrical Insulation Conference, EIC 2013
Considering the latest development of advanced information society, a stable supply of electric power should be maintained. Lightning surge arrester can contribute to reduce electric failures due to overvoltage from lightning. Since 1970's, zinc oxide (ZnO) element with superior non-linear voltage (V) - current (I) characteristics has been widely installed. Even in Japan, the surge arrester with a series gap has been installed to distribution systems for reducing the electrical failures. As mentioned above, the ZnO element has a superior nonlinearity of V-I characteristic, which can achieve suppress of overvoltage energy. Furthermore, the ZnO surge arrester with a series gap can interrupt the following current, immediately. The surge arrester with a series gap is composed of a simple gap electrode, a ceramic spacer for fixing the gap of the electrodes, and ZnO elements. The upper and the bottom of the ceramic spacer face metallic electrodes; therefore there are triple-junction points between the ceramic spacer, the metallic electrode, and gas. It is well known that electric field strength near the triple-junction point becomes high because of a triple-junction effect. It is also considered that the triple-junction point becomes a source of primary electrons by field emission due to the high electric field. Therefore, the triple-junction effect may influence the discharge characteristics so that the investigation will contribute to the further stable operation of a surge arrester with a series gap. In this study, we carried out experiments concerning how the triple-junction effect influences discharge characteristics such as breakdown voltage and discharge ignition. We first varied the distance between the discharge axis and the triple-junction point and then evaluated the discharge ignition time. Additionally, several ceramic materials with various relative permittivity were used. Based on the results, we evaluated the optimum distance between the discharge axis and the triple-junction point, which would be useful for design of a surge arrester with a series gap. © 2013 IEEE.
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Evaluation of discharge ignition by composite pollution test with silicone rubber
Oshikawa N., Tokunaga T., Honda K., Miyake T., Sakoda T., Anjiki T.
IEEJ Transactions on Fundamentals and Materials 133 ( 4 ) 205 - 210 2013年5月
記述言語：日本語 掲載種別：研究論文（学術雑誌） 出版者・発行元：IEEJ Transactions on Fundamentals and Materials
Application of polymeric materials for electric power apparatus is spreading worldwide. However, the aged deterioration is anxious because of dry band arc discharges generated on the surface of the polymer materials. In this paper, we carried out composite pollution tests and measured the discharge ignition time of silicone rubber. The results showed that there was no large difference in the discharge ignition times obtained between ac and dc voltage applications. Additionally, it was shown that the difference of the discharge ignition was influenced by hygroscopic property of the pollution material. © 2013 The Institute of Electrical Engineers of Japan.
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複合汚損試験によるシリコーンゴム表面上の放電開始時間の評価 査読あり
押川典仁, 徳永達也, 本田一史, 三宅琢磨, 迫田達也, 安食富和
電気学会論文誌A 133 ( 4 ) 205 - 210 2013年4月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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塩満 栄一, 木野 裕晶, 湯地 翔平, 迫田 達也, 貴島 純次, 中島 秀之
電気学会研究会資料. DEI, 誘電・絶縁材料研究会 2013 ( 10 ) 25 - 29 2013年1月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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放電ギャップ近傍の高電界部がインパルス放電特性に与える影響の評価
徳永 達也, 西川 慎之介, 迫田 達也, 深野 孝人, 千葉 智基
電気学会研究会資料. ED, 放電研究会 2013 ( 1 ) 39 - 42 2013年1月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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放電ギャップ近傍の高電界部がインパルス放電特性に与える影響の評価
徳永 達也, 西川 慎之介, 迫田 達也, 深野 孝人, 千葉 智基
電気学会研究会資料. DEI, 誘電・絶縁材料研究会 2013 ( 10 ) 39 - 42 2013年1月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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放電ギャップ近傍の高電界部がインパルス放電特性に与える影響の評価
徳永 達也, 西川 慎之介, 迫田 達也, 深野 孝人, 千葉 智基
電気学会研究会資料. HV, 高電圧研究会 2013 ( 42 ) 39 - 42 2013年1月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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塩満 栄一, 木野 裕晶, 湯地 翔平, 迫田 達也, 貴島 純次, 中島 秀之
電気学会研究会資料. ED, 放電研究会 2013 ( 1 ) 25 - 29 2013年1月
記述言語：日本語 掲載種別：研究論文（学術雑誌）
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塩満 栄一, 木野 裕晶, 湯地 翔平, 迫田 達也, 貴島 純次, 中島 秀之
電気学会研究会資料. HV, 高電圧研究会 2013 ( 42 ) 25 - 29 2013年1月
記述言語：日本語 掲載種別：研究論文（学術雑誌）