Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
EMD |
2019-12-13 15:00 |
Tokyo |
|
Influence of load current and breaking velocity on arc discharge at breaking of electrical contacts Koichiro Sawa, Kiyoshi Yoshida (NIT), Kenji Suzuki (Fuji Electric) EMD2019-44 |
[more] |
EMD2019-44 pp.7-12 |
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 14:00 |
Tokyo |
|
Contact reliability of electrical contacts by continuous make/break test of electromagnetic contactor Ikarashi Masanari, Ogaki Asuka, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2018-67 |
In this research, we conducted 5 million times of opening and closing experiments with contacts under minute load condit... [more] |
EMD2018-67 pp.41-46 |
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 |
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 |
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 |
EMD, R |
2019-02-15 13:05 |
Osaka |
|
A Summary of 29th International Conference on Electrical Contacts and 64th IEEE Holm Conference on Electrical Contacts Koichiro Sawa, Kiyoshi Yoshida, Takahiro Ueno (NIT), Kenji Suzuki (Fuji Electric) R2018-52 EMD2018-53 |
[more] |
R2018-52 EMD2018-53 pp.1-6 |
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 13:30 |
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 13:05 |
Saitama |
Nippon Institute of Technology |
Influence of Sealed Gases and Pressure on Arc Duration of Electromagnetic Contactor Ryoya Kaneko, Hiroki Funada, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2017-57 |
A electromagnetic contactor with magnets to shut off DC circuit was set in the chamber. The enclosed gases are hydrogen,... [more] |
EMD2017-57 pp.1-4 |
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 |
2018-03-02 13:50 |
Saitama |
Nippon Institute of Technology |
Automatic Measurements and Battery Switching of Solar Generation System Shunya Okado, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2017-60 |
In the previous report, automatic charge and discharge measurement of lithium ion battery using photovoltaic power gener... [more] |
EMD2017-60 pp.13-16 |
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 |
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 |
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 |
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 |
EMD |
2017-03-03 13:50 |
Chiba |
|
Automatic Measurement of Charging and Discharging State of Solar Power System Yusuke Matsui, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2016-102 |
In the previous report , we used a lithium ion battery 40 Ah for solar power generation system. And the automatic measu... [more] |
EMD2016-102 pp.13-16 |