Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
EMD |
2025-02-28 16:05 |
Tokyo |
NIT (Tokyo) |
Influence of power supply voltage,load inductance and ambient gas on arc discharge in breaking contacts Yuto Kurokawa, Makoto Takanezawa, Takahiro Ueno, Kiyoshi Yoshida (NIT) |
(To be available after the conference date) [more] |
|
EMD |
2024-12-11 14:20 |
Fukuoka |
JR HAKATA CITY (Fukuoka) |
Influence of Ambient Gas and Load Condition on Various Characteristics of Electromagnetic Contactor in AC Power Supply Kiyoshi Yoshida, Makoto Takanezawa, Ueno Takahiro, Kouichiro Sawa (NIT) EMD2024-24 |
水素は直流遮断に非常に効果的であることはよく知られているが、交流遮断ではどのように作用するかは不明である。
本論文では、空気中および水素ガス中で電磁接触器を開路する際のアーク放電を調べた。電源電圧はAC 100V -50Hz、閉接点電流は... [more] |
EMD2024-24 pp.17-22 |
EMD |
2024-03-01 14:40 |
Chiba |
(Chiba) |
Effects of inductance and surrounding gas on DC break arc discharge Shion Ozaki, Kiyoshi Yoshida (NIT) EMD2023-43 |
The effects of resistive load and inductance on arc discharge during DC power cut-off were investigated. A small electro... [more] |
EMD2023-43 pp.25-29 |
EMD |
2024-03-01 15:00 |
Chiba |
(Chiba) |
Effect of magnets on arc discharge at low DC voltage Yuki Yokohari, Ryo Watanabe, Kiyoshi Yoshida, Koichiro Sawa (NIT) EMD2023-44 |
In this study, we conducted experiments using a device that opens electrical contacts at a constant speed. Previous stud... [more] |
EMD2023-44 pp.30-35 |
EMD |
2024-03-01 16:15 |
Chiba |
(Chiba) |
Automatic contact resistance measurement of electrical contacts operating in various atmospheres Tomoito Ito, Yuto Mukai, Kiyoshi Yoshida (NIT) EMD2023-47 |
The purpose of this report was to experiment to see how various atmospheres affect the contact resistance of electrical ... [more] |
EMD2023-47 pp.46-51 |
EMD |
2024-03-01 16:35 |
Chiba |
(Chiba) |
Real-time display and control of the running status of small electric vehicles (COMS) Souya Ogawa, Kiyoshi Yoshida (NIT) EMD2023-48 |
In this study, we used the measurement control software LabVIEW for a compact electric vehicle (COMS) to create a progra... [more] |
EMD2023-48 pp.52-57 |
EMD |
2023-03-03 16:00 |
Saitama |
NIT and Online (Saitama, Online) (Primary: On-site, Secondary: Online) |
Various Characteristics of Arc Discharge Generated in DC Toggle Switches Masaya Harada, Hiroto Kanemoto, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2022-30 |
In this study, using a commercially available DC toggle switch, the same load conditions as in past experiments were use... [more] |
EMD2022-30 pp.52-57 |
EMD |
2023-03-03 16:25 |
Saitama |
NIT and Online (Saitama, Online) (Primary: On-site, Secondary: Online) |
Control of constant speed running of compact electric vehicle (COMS) Kaito Noguchi, Kiyoshi Yoshida (NIT) EMD2022-31 |
The purpose of this research is to run a small electric vehicle (COMS) at a constant speed using the measurement control... [more] |
EMD2022-31 pp.58-63 |
EMD |
2023-03-03 16:40 |
Saitama |
NIT and Online (Saitama, Online) (Primary: On-site, Secondary: Online) |
Influence of load inductance and ambient gas on arc discharge generated in AC power Tsubasa Tamura, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2022-32 |
The effect of load inductance on resistive load and inductive load (power factor )on arc discharge at AC power interrup... [more] |
EMD2022-32 pp.64-69 |
EMD |
2023-03-03 16:55 |
Saitama |
NIT and Online (Saitama, Online) (Primary: On-site, Secondary: Online) |
Automatic measurement system for contact resistance of electric contact
-- Improvement of the auto range -- Masato Fujisaki, Ayumu Hashizume, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2022-33 |
In this report, we improve a system that automatically sets the optimum input voltage range for each measurement (hereaf... [more] |
EMD2022-33 pp.70-75 |
EMD |
2022-03-04 13:45 |
Online |
Online (Online) |
A Study on Sensorless Drive Methods for Brushless DC Motors Yuuki Harigaya, Kiyoshi Yoshida (NIT) EMD2021-17 |
The three-phase brushless DC motor uses a Hall sensor to detect the position of the magnetic poles of the rotor. Howeve... [more] |
EMD2021-17 pp.13-18 |
EMD |
2022-03-04 14:20 |
Online |
Online (Online) |
Emulation of control signals for small electric vehicle COMS Yutaro Akiyama, Kiyoshi Yoshida (NIT) EMD2021-18 |
The purpose of this study was to control the motor inverter of the small electric vehicle COMS with a PC program. For e... [more] |
EMD2021-18 pp.19-24 |
EMD |
2022-03-04 14:40 |
Online |
Online (Online) |
Improvement and measurement of automatic contact resistance measurement system for electrical contacts Ryo Oyamada, Syun Kanaya, Kiyoshi Yoshida (NIT) EMD2021-19 |
In our laboratory, we made an automatic contact resistance measurement system for electrical contacts using LabVIEW. Ho... [more] |
EMD2021-19 pp.25-30 |
EMD |
2022-03-04 15:00 |
Online |
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 13:45 |
Online |
Online (Online) |
Effect of ambient gas on break arc in AC power supply Hiroto Takano, Kotaro Nakashima, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2020-31 |
The electromagnetic contactor was opened and closed in air or in hydrogen. The arc duration ta, arc energy Ea, and arc ... [more] |
EMD2020-31 pp.12-17 |
EMD |
2021-03-08 14:20 |
Online |
Online (Online) |
Continuous open and close test of contact resistance of electromagnetic contactor Yoshihiro Sudo, Kohei Chiba, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2020-32 |
In this study, the contact resistance when a small current was applied at DC5V, was automatically measured. In the expe... [more] |
EMD2020-32 pp.18-22 |
EMD |
2020-07-17 15:00 |
Hokkaido |
Chitose-Arcadia-Plaza (Hokkaido) |
Production of automatic measurement system for contact resistance and its measurement results
-- Contact resistance when switching 1 million times under small load condition -- Kiyoshi Yoshida, Koichiro Sawa (NIT), Kenji Suzuki (Fuji FA Comp. & Sys.) EMD2020-6 |
In this study, we constructed an automatic measurement system for the contact resistance of electrical contacts. This sy... [more] |
EMD2020-6 pp.17-22 |
EMD |
2020-03-06 16:05 |
Chiba |
CHIBA Institute of Technology Tsudanuma Campus (Chiba) (Cancelled but technical report was issued) |
Production of Automatic Contact Resistance Measurement System for Electrical Contacts Tatsuya Onodera, Sho Kashiwabara, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2019-69 |
In this study, we constructed an automatic measurement system for the contact resistance of electrical contacts. This sy... [more] |
EMD2019-69 pp.51-56 |
EMD |
2020-03-06 16:20 |
Chiba |
CHIBA Institute of Technology Tsudanuma Campus (Chiba) (Cancelled but technical report was issued) |
Influence on Various Characteristics with and without Magnet in DC Electromagnetic Contactor Akira Iwanami, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2019-70 |
An experiment was conducted on a DC electromagnetic contactor with a structure in which the arc was blown out by the mag... [more] |
EMD2019-70 pp.57-60 |
EMD |
2020-03-06 16:35 |
Chiba |
CHIBA Institute of Technology Tsudanuma Campus (Chiba) (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 |