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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EMD | 2019-12-13 15:40 |
Tokyo | Characteristics of break arcs blown-out in a 500VDC/10A circuit when moving range of arc spots is changed by shape of insulated silver pipes Taiju Masuda, Junya Sekikawa (Sizuoka Univ.)  EMD2019-45 |
Break arcs are generated and magnetically blown-out by transverse magnetic field in a 500VDC/10A resistive circuit. Silv... [more] | EMD2019-45 pp.13-18 |
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| EMD | 2019-05-17 15:50 |
Miyagi | Cyberscience Center, Tohoku University | Influence of ambient gas on arc duration and energy of electromagnetic contactor in AC power supply Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki (Fuji Electric FA Components & Systems) EMD2019-6 |
Arc discharge at break was generated in the electromagnetic contactor in the air and hydrogen. The arc duration ta, the ... [more] | EMD2019-6 pp.29-34 |
| EMD | 2019-03-01 14:15 |
Tokyo | Influence of ambient gas on various characteristics of break arc for electromagnetic contactor with AC power supply Igarashi Takahiro, Kumagai Fuuma, Kiyoshi Yoshida, Koichiro Sawa (NIT) EMD2018-68 |
Arc discharge at break was generated in the electromagnetic contactor in the atmosphere and hydrogen. The arc duration t... [more] | EMD2018-68 pp.47-52 |
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| EMD | 2019-03-01 14:45 |
Tokyo | Influence of current and magnetic flux density on magnetic blow-out on arc discharge at breaking of electrical contacts Mano Kenta, Koichiro Sawa, KIyoshi Yoshida (NIT) EMD2018-69 |
Recently, applications using DC high voltage are increasing. In the DC circuit, there is a method called "magnetic blow-... [more] | EMD2018-69 pp.53-57 |
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| EMD | 2019-03-01 15:00 |
Tokyo | Influence on various characteristics such as arc duration during continuous make/break of electromagnetic contactor Hiroki Takeuchi, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2018-70 |
By forming the contact portion in an airtight structure, it is possible to suppress the ejection of the arc discharge to... [more] | EMD2018-70 pp.59-62 |
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| EMD | 2019-01-18 14:40 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | kV-kA class Hybrid DC Circuit Breaker using SiC-MOSFET Shoya Kubo, Shunsuke Sato, Shungo Zen, Koichi Yasuoka (Tokyo Tech) EMD2018-50 |
A hybrid circuit breaker consisted of power semiconductor devices and varistor connected in parallel with an electrical ... [more] | EMD2018-50 pp.11-16 |
| EMD | 2018-11-09 14:25 |
Tokyo | The University of Electro-Communications | Characteristics of arc duration at breaking contacts for low DC current with magnetic blow-out effect Kiyoshi Yoshida, Kenta Mano, Koichiro Sawa (NIT), Kenji Suzuki (Fuji Electric FA Components & Systems) EMD2018-43 |
It is well-known that magnetic blow-out is an very useful method to extinguish quickly arc discharge at interrupting DC ... [more] | EMD2018-43 pp.13-19 |
| EMD | 2018-06-15 15:05 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Effect of circuit conditions on various characteristics such as molten metal bridge and arc discharge of auxiliary contact for electromagnetic contactor Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki (Fuji Electric FA Components & Systems) EMD2018-11 |
We have carried out an open and close operation experiments to evaluate the contact reliability of the auxiliary contact... [more] | EMD2018-11 pp.19-23 |
| EMD | 2018-05-18 13:05 |
Hokkaido | Muroran Institute of Technology | A Wear Model of Commutator and Brush Taking Account of Arc Erosion for DC Moto Driving Automotive Fuel Pump Koichiro Sawa, Yoshitada Watanabe, Takahiro Ueno (NIT) EMD2018-1 |
A carbon flat commutator and carbon brush are widely used in a DC motor driving an automotive fuel pump. The authors hav... [more] | EMD2018-1 pp.1-6 |
| EMD | 2018-05-18 13:30 |
Hokkaido | Muroran Institute of Technology | Influence of Magnetic Flux Density and Breaking Velocity and Source Voltage on Magnetic Blow-out Behavior of DC High Voltage Arc Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki (Fuji Electric FA Components & Systems) EMD2018-2 |
Recently, the applications for make and break DC power supply circuits such as solar power generation and electric vehic... [more] | EMD2018-2 pp.7-12 |
| EMD | 2018-03-02 13:20 |
Saitama | Nippon Institute of Technology | An experiment on reliability of Auxiliary Contacts in Electromagnetic Contactor Sora Ishiwa, Kazuki Takahashi, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2017-58 |
We have carried out an open and close operation experiments to evaluate the contact reliability of the auxiliary contact... [more] | EMD2017-58 pp.5-8 |
| 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 | 2017-11-17 11:10 |
Tokyo | The University of Electro-Communications | Effect of arc discharge types on various characteristics and mass change in electrodes for electromagnetic contractor Kiyoshi Yoshida, Koichiro Sawa (Nippon Inst. of Tech.), Kenji Suzuki, Koetsu Takaya (Fuji Electric FA) EMD2017-45 |
Experiments were carried out at several voltages to clarify the influence of the voltage on various characteristics, i.e... [more] | EMD2017-45 pp.13-19 |
| EMCJ, EMD | 2017-07-21 13:05 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Circuit simulation of a Hybrid DC Circuit Breaker consisted of electric contacts and Semiconductor switch Kyotaro Nakayama, Shungo Zen, Koichi Yasuoka (Tokyo Inst. of Tech.) EMCJ2017-25 EMD2017-13 |
Recently, a hybrid DC circuit breaker consisted of metal contacts, semiconductor devices and a varistor is intensely stu... [more] | EMCJ2017-25 EMD2017-13 pp.1-6 |
| EMD | 2017-05-19 14:30 |
Hokkaido | Chitose Arcadia Plaza | Various characteristics of the electromagnetic contactor when continuously make and break at below minimum arc voltage Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki, Koetsu Takaya (Fuji Electric FA) EMD2017-2 |
The electromagnetic contactor with two pairs of Ag and Ni alloy contacts was used in this experiment,. The source volta... [more] | EMD2017-2 pp.7-11 |
| EMD | 2017-03-03 13:05 |
Chiba | Influence of Break Arc on Electrode Mass Change of Electromagnetic Contactor
-- When Sourse Voltage is Less than Minimum Arc Voltage -- Syuwa Tanaka, Yuto Yamanaka, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2016-99 |
In this experiment, the electromagnetic contactor with two pairs of Ag and Ni alloy contacts was used. The source volta... [more] | EMD2016-99 pp.1-4 |
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| 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 | 2017-03-03 13:35 |
Chiba | Influence of Sealed Gas and Pressure on Arc Duration of Electromagnetic Contactor Ryosuke Takei, Masaki Yuzawa, Kiyoshi Yoshida, Koichiro Sawa (NIT) EMD2016-101 |
The electromagnetic contactor was installed in the chamber sealed with nitrogen, hydrogen, helium and clean air, and bre... [more] | EMD2016-101 pp.9-12 |
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| EMD, R | 2017-02-17 16:20 |
Shiga | Omuron Kusatsu Factory | DC300 V-150 A arcless current interruption by using arcless hybrid DC circuit breaker Tatsuya Hayakawa, Kyotaro Nakayama, Shungo Zen, Koichi Yasuoka (Titech) R2016-69 EMD2016-96 |
(To be available after the conference date) [more] | R2016-69 EMD2016-96 pp.53-58 |
| EMD | 2016-12-16 14:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Arcless Hybrid DC Circuit Breaker Using Tungsten and Carbon Contacts Tatsuya Hayakawa, Kyotaro Nakayama, Koichi Yasuoka (Titech) EMD2016-66 |
A hybrid circuit breaker consists of power semiconductor devices and a varistor connected in parallel with an electrical... [more] | EMD2016-66 pp.7-12 |
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