Stress grading performance of form wound motor coil under initial heat cycle load
Kimura, Yuga, Yuanhang, Yao, Sato, Masahiro, Kumada, Akiko, Hidaka, Kunihiko, Okamoto, Tetsushi, Sakurai, Takayuki, Umemoto, Takahiro, Yamanaka, Yuta
Published in 2022 IEEE Electrical Insulation Conference (EIC) (19.06.2022)
Published in 2022 IEEE Electrical Insulation Conference (EIC) (19.06.2022)
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Conference Proceeding
Numerical Simulation on Decaying Arcs in Molecular Gas Flow including C, F and O
Demura, Fumitoshi, Demura, Yuki, Kai, Hiromasa, Tanaka, Yasunori, Nakano, Yusuke, Ishijima, Tatsuo, Inada, Yuki, Kikuchi, Ryo, Kumada, Akiko
Published in 2022 6th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) (15.03.2022)
Published in 2022 6th International Conference on Electric Power Equipment - Switching Technology (ICEPE-ST) (15.03.2022)
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Conference Proceeding
Charge Accumulation/Decumulation on DC-GIS Spacer under 10,000-hour DC Field Application
Shimakawa, Hajime, Kumada, Akiko, Hidaka, Kunihiko, Yasuoka, Takanori, Hoshina, Yoshikazu, Shiiki, Motoharu
Published in 2020 IEEE 3rd International Conference on Dielectrics (ICD) (05.07.2020)
Published in 2020 IEEE 3rd International Conference on Dielectrics (ICD) (05.07.2020)
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Conference Proceeding
Numerical Simulation of Surface Charge Accumulation on DC-GIS Insulating Spacer with Charge Transport Model
Shimakawa, Hajime, Sato, Masahiro, Kumada, Akiko, Hidaka, Kunihiko, Yasuoka, Takanori, Hoshina, Yoshikazu, Shiiki, Motoharu
Published in 2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) (18.10.2020)
Published in 2020 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP) (18.10.2020)
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Conference Proceeding
Polarity Effect on Electrical Treeing in Silicone Gel under Repetitive Voltage Impulses
Nakamura, Shin, Sato, Masahiro, Kumada, Akiko, Hidaka, Kunihiko, Takano, Sho, Hayase, Yuji, Yamashiro, Keisuke, Takano, Tetsumi
Published in 2020 IEEE 3rd International Conference on Dielectrics (ICD) (05.07.2020)
Published in 2020 IEEE 3rd International Conference on Dielectrics (ICD) (05.07.2020)
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Conference Proceeding
Light Emission with Partial Discharge at the Stator Coil End of a Rotating Machine under Operating Temperature
Onoda, Takaaki, Hasegawa, Yuki, Kumada, Akiko, Hidaka, Kunihiko, Umemoto, Takahiro, Nakamura, Takahiro, Karasawa, Kazunari
Published in 2020 IEEE Electrical Insulation Conference (EIC) (01.06.2020)
Published in 2020 IEEE Electrical Insulation Conference (EIC) (01.06.2020)
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Conference Proceeding
THREE-DIMENSIONAL SURFACE POTENTIAL DISTRIBUTION MEASUREMENT SYSTEM
YOSHIMITSU, Tetsuo, HIDAKA, Kunihiko, IKEDA, Hisatoshi, FURUKAWA, Masaaki, TSUBOI, Yuichi, KUMADA, Akiko
Year of Publication 07.08.2024
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Year of Publication 07.08.2024
Patent
Characterization of Optimized SGT Characteristics
Boggs, Steven A., Kumada, Akiko, Nojma, Kenichi, Karasawa, Kazunari
Published in 2018 IEEE Electrical Insulation Conference (EIC) (01.06.2018)
Published in 2018 IEEE Electrical Insulation Conference (EIC) (01.06.2018)
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Conference Proceeding
Power dissipation in stress grading as a function of CAT-SG interface topology
Boggs, Steven A., Kumada, Akiko, Karasawa, Kazunari, Kisakibaru, Tomohito
Published in 2017 IEEE Electrical Insulation Conference (EIC) (01.06.2017)
Published in 2017 IEEE Electrical Insulation Conference (EIC) (01.06.2017)
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Conference Proceeding
Rotating machine end turn grading during PWM transitions
Boggs, Steven A., Kumada, Akiko, Yoshimitsu, Tetsuo
Published in 2016 IEEE International Conference on Dielectrics (ICD) (01.07.2016)
Published in 2016 IEEE International Conference on Dielectrics (ICD) (01.07.2016)
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Conference Proceeding
THREE-DIMENSIONAL SURFACE POTENTIAL DISTRIBUTION MEASUREMENT SYSTEM
KUMADA, AKIKO, TSUBOI, YUICHI, IKEDA, HISATOSHI, FURUKAWA, MASAAKI, HIDAKA, KUNIHIKO, YOSHIMITSU, TETSUO
Year of Publication 23.08.2022
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Year of Publication 23.08.2022
Patent
Computational study on electron mobility in liquid benzene
Sato, Masahiro, Kumada, Akiko, Hidaka, Kunihiko, Hirano, Toshiyuki, Sato, Fumitoshi
Published in 2016 IEEE International Conference on Dielectrics (ICD) (01.07.2016)
Published in 2016 IEEE International Conference on Dielectrics (ICD) (01.07.2016)
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Conference Proceeding
Three-dimensional surface potential distribution measurement system
Furukawa, Masaaki, Ikeda, Hisatoshi, Tsuboi, Yuichi, Hidaka, Kunihiko, Yoshimitsu, Tetsuo, Kumada, Akiko
Year of Publication 17.05.2022
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Year of Publication 17.05.2022
Patent
Surface potential measurement of stress grading system of high voltage rotating machine coils using pockels field sensor
Onishi, Dai, Kumada, Akiko, Hidaka, Kunihiko, Umemoto, Takahiro, Otake, Yasutomo, Tsurimoto, Takao
Published in 2017 International Symposium on Electrical Insulating Materials (ISEIM) (01.09.2017)
Published in 2017 International Symposium on Electrical Insulating Materials (ISEIM) (01.09.2017)
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Conference Proceeding
Inception voltage of positive streamer and its length on PMMA in air
Chiba, M., Kumada, A., Hidaka, K.
Published in IEEE transactions on dielectrics and electrical insulation (01.02.2002)
Published in IEEE transactions on dielectrics and electrical insulation (01.02.2002)
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Journal Article
Cavity Propagation under Repetitive Voltage Impulses in Silicone Gel for Encapsulation of Power Modules
Nakamura, Shin, Mitani, Takuya, Ejiri, Haruki, Sato, Masahiro, Kumada, Akiko, Hidaka, Kunihiko, Hayase, Yuji, Takano, Sho, Yamashiro, Keisuke, Takano, Tetsumi
Published in 2018 IEEE 2nd International Conference on Dielectrics (ICD) (01.07.2018)
Published in 2018 IEEE 2nd International Conference on Dielectrics (ICD) (01.07.2018)
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Conference Proceeding
End-turn grading for PWM-driven machines
Boggs, Steven A., Kumada, Akiko, Yoshimitsu, Tetsuo
Published in 2015 IEEE Electrical Insulation Conference (EIC) (01.08.2015)
Published in 2015 IEEE Electrical Insulation Conference (EIC) (01.08.2015)
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Conference Proceeding
A study of lightning location system (Blitz) based on VLF sferics
Narita, Tomomi, Wanke, Egon, Sato, Mitsuteru, Sakanoi, Takeshi, Kumada, Akiko, Kamogawa, Masashi, Hirohiko, Ishikawa, Harada, Shigemi, Kameda, Takao, Tsuchiya, Fuminori, Kaneko, Eiji
Published in 2018 34th International Conference on Lightning Protection (ICLP) (01.09.2018)
Published in 2018 34th International Conference on Lightning Protection (ICLP) (01.09.2018)
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Conference Proceeding