Papers - SAKODA Tatsuya
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Influence of Operation Modes of a Cooling Pump on Thermal and Electrical Properties of Thermoelectric Generator System Reviewed
Toshitsugu Ishikawa, Masatoshi Oku, Daisuke Tashima, Tatsuya Sakoda, Noriyuki Hayashi
The International Conference on Electrical Engineering ( 15A-192-FP ) 1 - 4 2015.7
Language：English Publishing type：Research paper (international conference proceedings)
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Evaluation of Tracking Deterioration for a Plug in Elbow by an Acoustic Emission Technique Reviewed
Toshiki, Hirashima, Kenta, Miyabe, Tatsuya, Sakoda, Ryosuke, Nakano, Fumimaro, Kamada Masami, Nishi
The International Conference on Electrical Engineering ( 15A-206-FP ) 1 - 4 2015.7
Language：English Publishing type：Research paper (international conference proceedings)
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Detection of Partial Discharges for Vacuum Circuit Breaker in Cubicle using Acoustic Emission and Electromagnetic Wave sensors Reviewed
Masatoshi Asakura, Manabu Ihira, Takuma Miyake, Tatsuya Sakoda, Yusuke Iki, Ryuya Kida
The International Conference on Electrical Engineering ( 15A-122-FP ) 1 - 4 2015.7
Language：English Publishing type：Research paper (international conference proceedings)
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Influence of Shed Inclination on Discharge Ignition under DC Voltage Application Reviewed
D. Yamashita, T. Miyake, T. Sakoda, Y. Aka, T. Anjiki, and T. Fukano
2015 Asia-Pacific International Conference on Lightning (APL) 569 - 572 2015.6
Language：English Publishing type：Research paper (international conference proceedings)
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Observation of Creeping Flashover on ZnO element Reviewed
T. Sakoda and D. Tashima
2015 Asia-Pacific International Conference on Lightning (APL) 693 - 696 2015.6
Language：English Publishing type：Research paper (international conference proceedings)
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Development of polymer housed surge arrester applied to D.C. railway systems Reviewed
Y. Aka, T. Fukano, Y. Kasuga, T. Anjiki and T. Sakoda
2015 Asia-Pacific International Conference on Lightning (APL) 137 - 140 2015.6
Language：English Publishing type：Research paper (international conference proceedings)
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Detection of Partial Discharge in Cubicle Reviewed
Manabu Ihira, Masatoshi Asakura, Takuma Miyake, Tatsuya Sakoda, Yusuke Iki, Ryuya Kida
The 17th Asian Conference on Electrical Discharge 31-1 - 31-4 2014.12
Language：English Publishing type：Research paper (international conference proceedings)
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Sterilization Characteristics of Underwater Plasma Reviewed
Taiki Mine,Taiga Douzono, Tatuya Sakoda, Norikazu Mizoguchi
The 17th Asian Conference on Electrical Discharge 1-1 - 1-4 2014.12
Language：English Publishing type：Research paper (international conference proceedings)
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Basic Characteristics of a Heat and Electricity Combined Generation System Using Biomass Fuel Reviewed
Masatoshi Oku, Noriyuki Hayashi, Tatsuya Sakoda, Daisuke Tashima
3rd The International Conference on Renewable Energy Research and Applications 222 - 227 2014.10
Language：English Publishing type：Research paper (international conference proceedings)
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Basic Characteristics of a Heat and Electricity Combined Generation System Using Biomass Fuel Reviewed
Masatoshi Oku, Noriyuki Hayashi, Tatsuya Sakoda, Daisuke Tashima
Proceedings of the 3rd International Conference on Renewable Energy Research and Applications 222 - 228 2014.10
Language：English Publishing type：Research paper (international conference proceedings)
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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 Reviewed
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 2014.10
Language：Japanese Publishing type：Research paper (scientific journal)
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GAS-LIQUID INTERFACIAL DISCHARGE WITH A POROUS GLASS MEMBRANE Reviewed
T. SAKODA and T. MINE
Proceedings of the XXth International Conference on Gas Discharges and their Applications 562 - 565 2014.7
Language：English Publishing type：Research paper (international conference proceedings)
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Compensation of output power characteristics of a partly-malfunctioned thermoelectric generator system by using a diode bypass circuit Reviewed
Masatoshi Oku, Daisuke Tashima, Tatsuya Sakoda, Noriyuki Hayashi
Proceedings of International Conference on Electrical Engineering 2014 384 - 389 2014.6
Language：English Publishing type：Research paper (international conference proceedings)
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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 Reviewed
北島純一, 迫田達也, 渡部清範
電気学会論文誌A 134 ( 6 ) 428 - 429 2014.6
Language：Japanese Publishing type：Research paper (scientific journal)
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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 Reviewed
塩満栄一, 迫田達也
電気学会論文誌A 134 ( 5 ) 321 - 326 2014.5
Language：Japanese Publishing type：Research paper (scientific journal)
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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 2014.1
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：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 Junichi, Sakoda Tatsuya, Watanabe Kiyonori
IEEJ Transactions on Fundamentals and Materials 134 ( 6 ) 428 - 429 2014
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan
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.
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Characteristics of an Underwater Plasma Source with a Porous Glass Membrane
Shiomitsu Eiichi, Sakoda Tatsuya
IEEJ Transactions on Fundamentals and Materials 134 ( 5 ) 321 - 326 2014
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan
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.
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Study on Deterioration Factors of an Electric Double-layer Capacitor
Yoshitama Hiromu, Haruta Atsuji, Tashima Daisuke, Sakoda Tatsuya, Hayashi Noriyuki
IEEJ Transactions on Fundamentals and Materials 134 ( 10 ) 525 - 531 2014
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：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 Eiichi, Ariyoshi Junya, Fuji Shinsuke, Sakoda Tatsuya, Kijima Junji, Nakashima Hideyuki
IEEJ Transactions on Fundamentals and Materials 133 ( 11 ) 606 - 607 2013.11
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan
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.