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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EMD | 2023-12-22 14:50 |
Tochigi | Teikyo University | Numerical Analysis of Hole Diameter Dependence of Airflow Distribution between Electrical Contacts with an Airflow Jet Hole Koki Kameyama, Naoki Kanda, Junya Sekikawa (Shizuoka Univ.)  EMD2023-36 |
The authors proposed a method to shorten the duration of break arcs by ejecting airflow from the surface of an electrica... [more] | EMD2023-36 pp.25-29 |
| EMD | 2023-06-30 13:10 |
Hokkaido | Chitose Arcadia Plaza | Effect of position and shape of contacts on the moving characteristics and duration of break arcs blown by airflow from inside a contact Naoki Kanda, Junya Sekikawa (Shizuoka Univ.) EMD2023-1 |
In a resistive circuit with a DC power supply voltage of 100 V and a circuit current of 10 A, a silver contact pair with... [more] | EMD2023-1 pp.1-6 |
| R, EMD | 2022-02-10 15:35 |
Online | Online | Investigation by numerical simulation of flow velocity of air blowing to electrical contact gap and its effect on break arcs Takashige Okuno, Junya Sekikawa (Shizuoka Univ.) R2021-45 EMD2021-13 |
In the interruption of DC high voltage circuits, it is desirable to extinguish the arc at the opening of the contacts in... [more] | R2021-45 EMD2021-13 pp.12-17 |
| EMD | 2020-03-06 16:35 |
Chiba | CHIBA Institute of Technology Tsudanuma Campus (Cancelled but technical report was issued) |
Influence of Magnetic Flux Density and Breaking Speed on Magnetic Blowout of DC Arc Discharge Hiroki Yamauchi, Hayato Watanabe, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2019-71 |
The arc duration time ta and the arc energy Ea when a magnetic flux was applied to the electrical contact were measured.... [more] | EMD2019-71 pp.61-64 |
| EMD | 2020-01-17 15:35 |
Kanagawa | Rental hall Shonan Hiratsuka | Arc movement observation of DC inductive break arcs of AgSnO2 contacts up to 20V-17A under external magnetic field application Makoto Hasegawa, Seika Tokumitsu (Chitose Inst. of Sci.&Tech.) EMD2019-51 |
AgSnO2 contacts were operated to break an inductive DC load circuit of 14V-7A, 14V-12A, 20V-7A, or 20V-17A with an appli... [more] | EMD2019-51 pp.17-21 |
| EMD | 2019-03-01 10:35 |
Tokyo | A study in influences of external magnetic field on break arc characteristics of AgSnO2 contacts in a DC inductive load circuit up to 20V-17A up to 20V-17A Seika Tokumitsu, Makoto Hasegawa (Chitose Inst. of Science & Technology) EMD2018-59 |
For the purpose of investigating influences of application of an external magnetic field on shortenings of break arc dur... [more] | EMD2018-59 pp.1-6 |
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| EMD | 2019-01-18 15:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Influences of contact opening speeds and external magnetic field on shortening of break arc durations of AgSnO2 contacts in a DC inductive load circuit up to 20V-17A Seika Tokumitsu, Makoto Hasegawa (Chitose Inst. of Science & Technology) EMD2018-52 |
In a DC inductive (L=5.7mH) load circuit, a AgSnO2 contact pair with applied external magnetic field of about 120mT was ... [more] | EMD2018-52 pp.23-28 |
| EMD | 2018-03-02 13:35 |
Saitama | Nippon Institute of Technology | Influence of Magnetic Flux Density on Blow-out Behavior of DC High Voltage Arc Tsubasa Umezawa, Toshiya Morita, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2017-59 |
Solar power generation and electric vehicles (EV) that use high current with high DC voltage are increasing. The role o... [more] | EMD2017-59 pp.9-12 |
| EMD | 2017-03-03 13:20 |
Chiba | Influence of Contact Materials and Opening velocity in DC High Voltage Arc Keisuke Kojima, Hidekazu Hirasawa, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2016-100 |
Recently, applications using DC high voltage and large current such as photovoltaic power generation and electric vehicl... [more] | EMD2016-100 pp.5-8 |
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| EMD | 2016-05-20 14:50 |
Hokkaido | Chitose Arcadia Plaza | Influence of electrical contact material on breaking characteristics of arc discharge at DC high voltage
-- Experimental results from DC200 to 500V of various materials -- Kiyoshi Yoshida, Koichiro Sawa, Hikaru Kanou, Hiroto Yamagishi (NIT), Kenji Suzuki, Koetsu Takaya (Fuji FA Comp.& Sys.) EMD2016-4 |
The experimental apparatus that is able to set opening velocity at wide-range of 1-200mm/s with an equal speed was used ... [more] | EMD2016-4 pp.19-24 |
| EMD | 2016-03-04 14:55 |
Saitama | Influence of Opening Velocity and Contact Material on Various Characteristics in Break Arc Hikaru Kanou, Hiroto Yamagishi, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2015-104 |
The experimental apparatus that is able to set opening velocity at wide-range of 1-200mm/s with an equal speed was used ... [more] | EMD2015-104 pp.21-24 |
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| EMD, CPM, OME | 2015-06-19 16:45 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | An experimental study on break arc characteristics of AgSnO2 contact pairs at interruptions of DC load currents with different contact opening speeds Makoto Hasegawa (Chitose Inst. of Science & Technology) EMD2015-19 CPM2015-29 OME2015-32 |
In DC load circuit conditions with a power supply voltage of DC14V, break operations of a load current in the range from... [more] | EMD2015-19 CPM2015-29 OME2015-32 pp.47-50 |
| EMD | 2015-03-06 15:35 |
Chiba | Chiba Institute of Technology | Influence of Opening Velocity on Various Characteristics in Break Arc Syogo Funawatari, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2014-119 |
Recently, the demand to interrupt the DC high voltage and the large-current by electric contact has increased. Experime... [more] | EMD2014-119 pp.29-32 |
| EMD | 2015-01-23 13:55 |
Kanagawa | An experimental study on influences of contact opening speeds on break arc characteristics of AgSnO2 contact pair at interruptions of inductive DC load currents Makoto Hasegawa, Nanami Ohkawa, Hiroya Sonobe (Chitose Inst. of Science & Technology) EMD2014-102 |
In a DC inductive load circuit (L=20mH) with a power supply voltage of DC14V, break operations of a load current in the ... [more] | EMD2014-102 pp.7-10 |
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| EMD | 2014-12-19 15:35 |
Tokyo | Kikai-Shinko-Kaikan Bldg | Influence of Opening Velocity on Characteristics of Break Arc Extinction
-- An experimental results for DC200V, Ag contacts -- Kiyoshi Yoshida, Koichiro Sawa, Syogo Funawatari (NIT), Kenji Suzuki, Koetsu Takaya (Fuji Electric) EMD2014-98 |
Recently, the demand to cut the DC high voltage and the heavy-current by electric contact has risen. Experimental appar... [more] | EMD2014-98 pp.19-24 |
| EMCJ, ITE-BCT | 2012-03-16 15:15 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Effect of holder temperature on bridge and arc at slowly breaking contact Kazuaki Miyanaga, Yoshiki Kayano, Hiroshi Inoue (Akita Univ.) EMCJ2011-142 |
The electrical contact is wideband noise source. But the electrical contact is essential device for the electrical circu... [more] | EMCJ2011-142 pp.73-77 |
| EMD | 2012-01-20 14:00 |
Kanagawa | Relationship between moving range of break arcs and radius of curvature of electrical contacts in a DC48V circuit Toru Sugiura, Junya Sekikawa, Takayoshi Kubono (Shizuoka Univ.) EMD2011-113 |
Break arc generated in a DC48V/6-24A resistive circuit using Ag contact that the radius of curvature of a contact surfa... [more] | EMD2011-113 pp.7-12 |
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| EMD | 2011-11-17 14:40 |
Akita | Akita Univ. Tegata Campus | Dependence of Contact Resistance Distribution on Circuit Current after Occurrence of Break Arcs Youhei Yamanashi, Katsuyoshi Miyaji, Junya Sekikawa, Takayoshi Kubono (Shizuoka Univ.) EMD2011-79 |
Break arcs are generated in a DC48V and 1-6A resistive circuit. Contact surface that is exposed by the break arc, the co... [more] | EMD2011-79 pp.67-72 |
| EMD | 2010-11-11 08:30 |
Overseas | Xi'an Jiaotong University | Dependence of the Break arcs Driven by Transverse Magnetic Field on the Contact Opening Speed in a DC High-voltage Resistive Circuit Tomohiro Atsumi, Junya Sekikawa, Takayoshi Kubono (Shizuoka Univ.) EMD2010-67 |
Break arcs are generated between pure silver electrical contacts in a DC high-voltage resistive circuit. The break arc i... [more] | EMD2010-67 pp.1-4 |
| EMD | 2010-11-11 17:45 |
Overseas | Xi'an Jiaotong University | Research of the Operation Characteristics Influence on the Breaking Capacity of Delaying Auxiliary Switch Lijun Jin, Ke Wang (Tongji Univ.) EMD2010-96 |
Auxiliary switch is the closing-opening control element for secondary control circuit of high voltage circuit breaker, t... [more] | EMD2010-96 pp.121-124 |
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