Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
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 15:55 |
Chiba |
(Chiba) |
Study on wear of carbon brush at high current density Yuta Momiyama, Atsushi Gokita, Shota Kanazawa, Koichiro Sawa, Takahiro Ueno (NIT) EMD2023-46 |
[more] |
EMD2023-46 pp.42-45 |
EMD |
2023-06-30 13:50 |
Hokkaido |
Chitose Arcadia Plaza (Hokkaido) |
Wear Characteristics of Carbon Brush under High Current Density Shota Kanazawa, Takahiro Ueno, Koichiro Sawa (NIT) EMD2023-3 |
As global warming becomes an important issue in the world, it is one of demands for energy saving to increase the single... [more] |
EMD2023-3 pp.13-16 |
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 16:40 |
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 |
2023-03-03 17:10 |
Saitama |
NIT and Online (Saitama, Online) (Primary: On-site, Secondary: Online) |
Effect of Lubricants on Electrical Characteristics of Sliding Contacts in Gold-plated Slip-ring System Naoya Chiba, Takuma Matsuzaki, Koichiro Sawa, Takahiro Ueno (NIT) EMD2022-34 |
An electric sliding contact mechanism is a means of transmitting power and signals between stationary and moving objects... [more] |
EMD2022-34 pp.76-81 |
EMD |
2023-03-03 17:25 |
Saitama |
NIT and Online (Saitama, Online) (Primary: On-site, Secondary: Online) |
Effects of brush force of the commutator motor on brush wear and arc properties Takuma Hirabayashi, Shogo Suzuki, Shoma Matsuura, Koichiro Sawa, Takahiro Ueno (NIT) EMD2022-35 |
In recent years, the automotive industry has seen an increase in the electrification of vehicles, and at the same time, ... [more] |
EMD2022-35 pp.82-87 |
EMD |
2022-03-04 13:05 |
Online |
Online (Online) |
Research on Degradation Process by Sliding Contact Energization of Gold-plated Slip-ring Toshinari Saito, Tatsuya Kobayashi, Koichiro Sawa, Takahiro Ueno (NIT) EMD2021-15 |
An electric sliding contact mechanism is a means of transmitting power and signals between stationary and moving objects... [more] |
EMD2021-15 pp.1-6 |
EMD |
2022-03-04 13:25 |
Online |
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 (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 (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 |
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 |
2020-12-04 13:55 |
Online |
Online (Online) |
An Extraordinary Long Lifetime Case of AgPd Brush and Au-plated Slip-ring System with Lubricant Koichiro Sawa, Yositada Watanabe, Takahiro Ueno (NIT), Hiroyasu Masubuchi (NIDEC SERVO) EMD2020-20 |
[more] |
EMD2020-20 pp.13-18 |
EMD |
2020-12-04 14:35 |
Online |
Online (Online) |
Sliding energization characteristics of copper contacts by molybdenum disulfide shot treatment Tatsuro Iizuka, Yoshitada Watanabe, Koichiro Sawa, Takahiro Ueno (NIT) EMD2020-21 |
[more] |
EMD2020-21 pp.19-23 |
EMD |
2020-12-04 15:00 |
Online |
Online (Online) |
Sliding Current Characteristics brought about by Changes in the Silver Content of Silver Graphite Brushes. Naoki Fukuda, Ryosuke Kudo, Yuki Saito, Yuki Kawashima, Yusuke Takada, Koichiro Sawa, Takahiro Ueno (NIT) EMD2020-22 |
Sliding contact is a mechanism for the transfer of electrical current between stationary and moving parts. To date, slip... [more] |
EMD2020-22 pp.24-29 |
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 13:20 |
Chiba |
CHIBA Institute of Technology Tsudanuma Campus (Chiba) (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 13:35 |
Chiba |
CHIBA Institute of Technology Tsudanuma Campus (Chiba) (Cancelled but technical report was issued) |
Study of Brush Consumption and its Control by Commutation Arc of DC Motor Serina Hosoya, Ryusyo Onodera, Koichiro Sawa, Takahiro Ueno (NIT) EMD2019-61 |
[more] |
EMD2019-61 pp.9-14 |