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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| EMD | 2022-03-04 13:25 |
Online | Online | Brush Wear by Arcing Discharge in Commutator Motors and the Effect of Arc-quenching device Musashi Uematsu, Toranosuke Oouchi, Takayuki Saito, Koichiro Sawa, Takahiro Ueno (NIT)  EMD2021-16 |
In order to realize excellent amenity and reliability, many small-sized DC motors are used in an automobile due to good ... [more] | EMD2021-16 pp.7-12 |
| EMD | 2022-03-04 15:00 |
Online | Online | Effect of inductance and magnetic blowout on DC arc discharge when contacts opened Yuuto Waragai, Kiyoshi Yoshida, Koichiro Sawa (NIT) EMD2021-20 |
DC current switching has been getting important as DC grid systems and electrical vehicles have been more popular. As we... [more] | EMD2021-20 pp.31-36 |
| EMD | 2021-03-08 13:25 |
Online | Online | Brush Wear and its Control by the Arc of Commutator Motor Taiga Wada, Takayuki Saito, Koichiro Sawa, Takahiro Ueno (NIT) EMD2020-30 |
Many small-sized DC motors are used in an automobile due to good cost-performance and energy efficiency. They have been ... [more] | EMD2020-30 pp.6-11 |
| EMD, R | 2021-02-12 13:35 |
Online | Online | Photograph observation of 12 parallel discharge arcs generated in the atmosphere by a reliable trigger gap switch Tomokatsu Aizawa (Tokyo Metropolitan College) R2020-34 EMD2020-25 |
This trigger gap switch has a switching circuit that combines multiple main electrodes and induced electric field genera... [more] | R2020-34 EMD2020-25 pp.1-6 |
| EMD | 2020-12-04 13:05 |
Online | Online | Observation of arc discharges occurring between commutator and brush Simulating a DC motor by means of a high-speed camera Ryosuke Sano, Junya Sekikawa (Shizuoka Univ.) EMD2020-18 |
Observed results of arc discharges generated between the brush and commutator are reported during arc duration. The arcs... [more] | EMD2020-18 pp.1-6 |
| EMD | 2020-03-06 13:20 |
Chiba | CHIBA Institute of Technology Tsudanuma Campus (Cancelled but technical report was issued) |
Study on brush wear and wear of high speed rotating commutator motor Syougo Aoki, Hayate Saito, Koichiro Sawa, Takahiro Ueno (NIT) EMD2019-60 |
Small DC motors with brushes are widely used especially in automobiles, and requested for smaller size and higher output... [more] | EMD2019-60 pp.5-8 |
| 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 | 2020-03-06 16:50 |
Chiba | CHIBA Institute of Technology Tsudanuma Campus (Cancelled but technical report was issued) |
Influence of Ambient Gas on Breaking Arc Discharge of Electromagnetic contactor
-- Effect of Gas Pressure and Current -- Sota Nagase, Yoshiki Yamamoto, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2019-72 |
The electromagnetic contactor was opened and closed in air or in hydrogen. The arc duration ta, arc energy Ea, arc exti... [more] | EMD2019-72 pp.65-70 |
| EMD | 2020-01-17 14:55 |
Kanagawa | Rental hall Shonan Hiratsuka | Influence of Ambient Gas and Pressure on Break Arc Characteristics in Alternating Current Yoshiki Yamamoto, Sota Nagase, Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki (Fuji Electric FA Components & System) EMD2019-50 |
Arc discharge at break was generated in the electromagnetic contactor in the air and hydrogen. The arc duration ta, the ... [more] | EMD2019-50 pp.11-16 |
| 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 |
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