Papers - SAKODA Tatsuya
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電気絶縁機器用ポリマー外被材の直流・交流時の電気的特性の評価 Reviewed
三宅琢磨, 瀬尾裕也, 押川典仁, 迫田達也, 大坪昌久, 安食富和
電気設備学会誌 32 ( 8 ) 594 - 599 2012.12
Language：Japanese Publishing type：Research paper (scientific journal)
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微細藻類がポリマーがいし外被材の絶縁特性に与える影響の評価 Reviewed
本田一史, 押川 典仁, 三宅 琢磨, 迫田 達也, 吉田 ナオト, 古河 征二
電気学会論文誌A 132 ( 11 ) 944 - 950 2012.12
Language：Japanese Publishing type：Research paper (scientific journal)
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Insulation Characteristics of Polymer Insulator Materials with Algaes
HONDA Kazufumi, OSHIKAWA Norihito, MIYAKE Takuma, SAKODA Tatsuya, YOSHIDA Naoto, FURUKAWA Seiji
IEEJ Transactions on Fundamentals and Materials 132 ( 11 ) 944 - 950 2012.11
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan
Polymer insulator has some excellent properties such as being lightweight, hydrophobicity, and antiweatherability. However, the polymer material is made from organic matters whereby the aged deterioration due to electric discharges, polluted deposited, and microbes is worrying.<br>In this study, we first investigated existence and kind of microbes on the surface of silicone rubber (SiR) insulators arranged outdoor for 11 years. Next, to investigate how the microbes influence insulation performance of polymeric materials, the salt fog tests were performed on SiR samples with the artificial cultured microbes. The microbes temporally increased the leakage current due to discharges; however, the degradation didn't continue because the discharges rejected the microbes.
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Frequency Dependence on Etching Characteristics of Silicon using Surface Discharge Plasma
ARIMURA Takuya, HIRANO Keta, HAMADA Toshiyuki, SAKODA Tatsuya
IEEJ Transactions on Fundamentals and Materials 132 ( 4 ) 333 - 334 2012.10
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Engineers of Japan
We proposed a maskless plasma etching technique for fabrication of front contact grooves on a single crystalline silicon solar cell. In this paper, we evaluated characteristics of silicon etching with various output frequency of ac power source. The etching rate in the direction of the groove width was suppressed while that in the direction of the groove depth increased with increasing output frequency of the power source. Thus, it was found that the increase of output frequency of a power source was effective in the case where the surface discharge plasma was applied to patterning.
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Maximum Output Power Control using Short-Circuit Current and Open-Circuit Voltage of a Solar Panel Reviewed
Takahiro Kato, Takuma Miyake, Daisuke Tashima, Tatsuya Sakoda, Masahisa Otsubo, Mitsuyuki Hombu
Japanese Journal of Applied Physics 10 ( 51 ) 10NF08-1 - 10NF08-4 2012.10
Language：English Publishing type：Research paper (scientific journal)
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Maximum Output Power Control using Short-Circuit Current and Open-Circuit Voltage of a Solar Panel
Takahiro Kato, Takuma Miyake, Daisuke Tashima, Tatsuya Sakoda, Masahisa Otsubo, Mitsuyuki Hombu
Japanese Journal of Applied Physics 51 ( 10 PART 2 ) 1 - 10 2012.10
Language：Japanese Publishing type：Research paper (scientific journal)
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Daisuke Tashima, Hiromu Yoshitama, Tatsuya Sakoda, Akihito Okazaki, Takayuki Kawaji
Electrochimica Acta 77 198 - 203 2012.8
Language：Japanese Publishing type：Research paper (scientific journal)
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MIYAKE Takuma, SEO Yuya, OSHIKAWA Norihito, SAKODA Tatsuya, OTSUBO Masahisa, ANJIKI Tomikazu
32 ( 8 ) 594 - 599 2012.8
Language：Japanese Publishing type：Research paper (scientific journal)
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Characteristics of powdered activated carbon treated with dielectric barrier discharge for electric double-layer capacitors Reviewed
Daisuke Tashima, Hiromu Yoshitama, Tatsuya Sakoda, Akihito Okazaki, Takayuki Kawaji
Electrochimica Acta 77 198 - 203 2012.5
Language：English Publishing type：Research paper (scientific journal)
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沿面放電プラズマを用いたSiエッチングの電源周波数依存性 Reviewed
有村拓也, 平野啓太, 濱田俊之, 迫田達也
電気学会論文誌A 132 ( 4 ) 333 - 334 2012.4
Language：Japanese Publishing type：Research paper (scientific journal)
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Toshiyuki Hamada, Takuya Arimura, Tatsuya Sakoda
Plasma Chemistry and Plasma Processing 32 ( 2 ) 325 - 332 2012.4
Language：Japanese Publishing type：Research paper (scientific journal)
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Studies on optimal gas supply for a maskless etching system with micro- discharge plasma operated at atmospheric pressure Reviewed
Toshiyuki Hamada, Takuya Arimura, Tatsuya Sakoda
Plasma Chemistry and Plasma Processing 32 ( 2 ) 325 - 332 2012.3
Language：English Publishing type：Research paper (scientific journal)
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Insulation characteristics of polymer insulator materials with algaes
HONDA Kazufumi, OSHIKAWA Norihito, MIYAKE Takuma, SAKODA Tatsuya, OTSUBO Masahisa, FURUKAWA Seiji, TANAKA Kenji
2012 ( 13 ) 37 - 42 2012.1
Language：Japanese Publishing type：Research paper (scientific journal)
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Insulation characteristics of polymer insulator materials with algaes
HONDA Kazufumi, OSHIKAWA Norihito, MIYAKE Takuma, SAKODA Tatsuya, OTSUBO Masahisa, FURUKAWA Seiji, TANAKA Kenji
2012 ( 1 ) 37 - 42 2012.1
Language：Japanese Publishing type：Research paper (scientific journal)
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Characteristics of hydrophobicity loss on silicone rubber surface during a dynamic drop test with direct current voltage application Reviewed
Yuya Seo, Norihito Oshikawa, Takuma Miyake, Tatsuya Sakoda, and Tomikazu Anjiki
Nanoscale Research Letters 7 ( 4 ) 1 - 4 2012.1
Language：English Publishing type：Research paper (scientific journal)
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Miyake Takuma, Seo Yuya, Oshikawa Norihito, Sakoda Tatsuya, Otsubo Masahisa, Anjiki Tomikazu
The Journal of the Institute 32 ( 8 ) 593 - 599 2012
Language：Japanese Publishing type：Research paper (scientific journal) Publisher：The Institute of Electrical Installation Engineers of Japan
Recently,much attention has been paid to polymeric materials used for housing of electric power apparatus. However,because polymeric material is made by organic matters,the aged deterioration is anxious. The lifetime of polymeric material is influenced by environmental conditions such as ultraviolet,acid rain,and polluted deposits. The change of the surface condition of polymeric material causes dry band arc discharges. To understand the long-term reliability of the insulation performance of polymeric materials,a composite pollution test of a liquid silicone rubber (LSR) was performed with dc or ac voltage application. After the test,heavy erosion was confirmed around a cathode electrode when dc voltage was applied. In the case of ac voltage application,heavy erosion was confirmed around a grounding electrode. It was also found that the initiation time of leakage current and cumulative charge depended on the kind of polluted deposits and that the difference of cumulative charge among polluted deposits in the case of dc voltage application was larger than that in the case of ac voltage application.
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Electrochemical Capacitances of Carbon Powder Treated with Dielectric Barrier Discharge
D. Tashima, R. Hirakawa, T. Sakoda and M. Otsubo
IEEE Conference on Electrical Insulation And Dielectric Phenomena 2011 Vol.1 109 - 112 2011.12
Language：Japanese Publishing type：Research paper (scientific journal)
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Acoustic Emission Signals due to Several Discharges at a Joint Section of a XLPE cable
NAKAMURA Yuta, HIRANO Keita, KITAJIMA Junichi, SAKODA Tatsuya, KURIHARA Satoshi, KANEKO Koichiro, YARIMITSU Takayoshi
2011 ( 67 ) 81 - 84 2011.11
Language：Japanese Publishing type：Research paper (scientific journal)
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Study on the discharge ignition time of Silicone Rubber for a composite polluted test
OSHIKAWA Norihito, SEO Yuya, MIYAKE Takuma, SAKODA Tatsuya, ANJIKI Tomikazu
2011 ( 67 ) 77 - 80 2011.11
Language：Japanese Publishing type：Research paper (scientific journal)
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Electrochemical Capacitances of Carbon Powder Treated with Dielectric Barrier Discharge Reviewed
D. Tashima, R. Hirakawa, T. Sakoda and M. Otsubo
IEEE Conference on Electrical Insulation And Dielectric Phenomena 2011.10
Language：English Publishing type：Research paper (international conference proceedings)