Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
EMD |
2024-12-11 14:40 |
Fukuoka |
JR HAKATA CITY (Fukuoka) |
Analysis of surface deformation of silver electrical contacts for different surface roughness at contact load of up to 5N Shota Ide, Junya Sekikawa (Shizuoka Univ.) EMD2024-25 |
The contact resistance-load and displacement-load characteristics at contact loads of 0.03-5N are investigated for four ... [more] |
EMD2024-25 pp.23-26 |
EMD |
2024-12-11 15:00 |
Fukuoka |
JR HAKATA CITY (Fukuoka) |
Dependence of breakdown voltage between constant closing-speed contacts on contact surface roughness in a 50-600VDC/10A circuit Motoki Fujiwara, Junya Sekikawa (Shizuoka Univ.) EMD2024-26 |
Dependence of breakdown voltage between closing contacts on contact surface roughness is investigated. Supply voltage is... [more] |
EMD2024-26 pp.27-30 |
EMD |
2024-12-11 15:20 |
Fukuoka |
JR HAKATA CITY (Fukuoka) |
Analysis of arc length of break arcs magnetically blown out in a 48VDC/400-600A resistive circuit Hayato Mukoyama, Junya Sekikawa (Shizuoka Univ.) EMD2024-27 |
In a 48VDC/400-600A resistive circuit, arc length L of break arcs is analyzed when electrical contacts are separated at ... [more] |
EMD2024-27 pp.31-36 |
EMD |
2024-12-11 15:50 |
Fukuoka |
JR HAKATA CITY (Fukuoka) |
Study of effective contacts shapes for lengthening of break arcs generated between electrical contacts with airflow ejection structure Naoki Kanda, Junya Sekikawa (Shizuoka Univ.) EMD2024-28 |
In 100, 150, and 200 VDC/5A resistor circuits, silver contacts with airflow ejection structure, in which the contact sha... [more] |
EMD2024-28 pp.37-41 |
EMD |
2024-12-11 16:10 |
Fukuoka |
JR HAKATA CITY (Fukuoka) |
Numerical analysis of contact geometry dependence of airflow generated between electrical contacts pairs with airflow jet structures Shinya Kato, Junya Sekikawa (Shizuoka Univ.) EMD2024-29 |
The purpose of this report is to clarify the dependence of airflow distribution generated between electrical contacts on... [more] |
EMD2024-29 pp.42-47 |
EMD |
2024-12-11 16:30 |
Fukuoka |
JR HAKATA CITY (Fukuoka) |
Damage process of PTFE dividing plates and receivers in forcible division of break arcs generated in a 600VDC/10A circuit Rui Suzuki, Junya Sekikawa (Shizuoka Univ.) EMD2024-30 |
In a resistive circuit with a DC supply voltage of 500V or 600V and a circuit current of 10 A, the contacts are separat... [more] |
EMD2024-30 pp.48-53 |
EMCJ, WPT, EMD (Joint) |
2024-07-19 14:50 |
Tokyo |
(Tokyo) |
Analysis of arc length during discharge of break arcs magnetically blown out in a 48VDC/300A resistive circuit Hayato Mukoyama, Junya Sekikawa (Shizuoka Un) EMD2024-2 |
Analyzed results of relationships between the length and voltage of break arcs are reported. The break arcs are generate... [more] |
EMD2024-2 pp.7-12 |
EMCJ, WPT, EMD (Joint) |
2024-07-19 15:15 |
Tokyo |
(Tokyo) |
Effect of contact opening speed on break arcs generated between electrical contacts with airflow ejection structure Naoki Kanda, Junya Sekikawa (Shizuoka Univ.) EMD2024-3 |
In a resistive circuit with a DC power supply voltage of 100 V and a circuit current of 10 A, a silver contact pair with... [more] |
EMD2024-3 pp.13-18 |
EMCJ, WPT, EMD (Joint) |
2024-07-19 15:40 |
Tokyo |
(Tokyo) |
A study on improving results of numerical analyses of airflow acting on break arcs Shinya Kato, Junya Sekikawa (Shizuoka Univ.) EMD2024-4 |
The purpose of this report is to clarify how to set the calculation conditions to obtain results that appear to be
cor... [more] |
EMD2024-4 pp.19-24 |
EMD |
2023-12-22 14:50 |
Tochigi |
Teikyo University (Tochigi) |
Numerical Analysis of Hole Diameter Dependence of Airflow Distribution between Electrical Contacts with an Airflow Jet Hole Koki Kameyama, Naoki Kanda, Junya Sekikawa (Shizuoka Univ.) EMD2023-36 |
The authors proposed a method to shorten the duration of break arcs by ejecting airflow from the surface of an electrica... [more] |
EMD2023-36 pp.25-29 |
EMD |
2023-12-22 15:15 |
Tochigi |
Teikyo University (Tochigi) |
Shortening of Duration of Break Arcs during Opening by Combined Use of Magnetic Blowing Out and Airflow in a 100VDC/10A Circuit Naoki Kanda, Junya Sekikawa (Shizuoka Univ.) EMD2023-37 |
[more] |
EMD2023-37 pp.30-34 |
EMD |
2023-12-22 15:40 |
Tochigi |
Teikyo University (Tochigi) |
Characteristics of Break Arcs Generated between Cu, Al and Fe Electrical Contacts in a 100-280VDC/10A Resistive Circuit Aoi Handa, Junya sekikawa (Shizuoka Univ.) EMD2023-38 |
Break arcs were generated using Cu, Al, and Fe as electrical contacts in the resistive load circuit with supply voltage ... [more] |
EMD2023-38 pp.35-40 |
WPT, EMCJ, EMD (Joint) |
2023-07-21 14:35 |
Tokyo |
(Tokyo, Online) (Primary: On-site, Secondary: Online) |
Improved method for analyzing the voltage-current characteristics of each arc length of break arcs generated in a 48VDC/50A-600A resistive circuit Keiya Imori, Junya Sekikawa (Shizuoka Univ.) EMD2023-11 |
[more] |
EMD2023-11 pp.7-12 |
EMD |
2023-06-30 13:10 |
Hokkaido |
Chitose Arcadia Plaza (Hokkaido) |
Effect of position and shape of contacts on the moving characteristics and duration of break arcs blown by airflow from inside a contact Naoki Kanda, Junya Sekikawa (Shizuoka Univ.) EMD2023-1 |
In a resistive circuit with a DC power supply voltage of 100 V and a circuit current of 10 A, a silver contact pair with... [more] |
EMD2023-1 pp.1-6 |
EMD |
2023-06-30 13:30 |
Hokkaido |
Chitose Arcadia Plaza (Hokkaido) |
Durability of dividing plates and receivers in forcible division of break arcs with PTFE dividing plate Rui Suzuki, Junya Sekikawa (Shizuoka Univ.) EMD2023-2 |
[more] |
EMD2023-2 pp.7-12 |
EMD |
2023-03-03 12:35 |
Saitama |
NIT and Online (Saitama, Online) (Primary: On-site, Secondary: Online) |
Forcible arc extinction of break arcs generated in a DC high voltage circuit using different kinds of resin plates Takumi Sakamoto, Junya Sekikawa (Shizuoka Univ.) EMD2022-20 |
[more] |
EMD2022-20 pp.1-6 |
EMD |
2023-03-03 12:55 |
Saitama |
NIT and Online (Saitama, Online) (Primary: On-site, Secondary: Online) |
Analysis of surface topography before and after contact for silver electrical contacts Kosuke Shinomura, Junya Sekikawa (Shizuoka Univ.) EMD2022-21 |
In this study, to investigate the deformation state of contact surfaces of silver contacts, the shape of the contact sur... [more] |
EMD2022-21 pp.7-10 |
EMD, WPT, EMCJ, PEM (Joint) |
2022-07-15 15:25 |
Tokyo |
(Tokyo, Online) (Primary: On-site, Secondary: Online) |
Numerical analysis of airflow to affect on motion of break arcs ejected from surface of electrical contact Koki Kameyama, Junya Sekikawa (Shizuoka Univ.) EMD2022-1 |
[more] |
EMD2022-1 pp.1-6 |
EMD, WPT, EMCJ, PEM (Joint) |
2022-07-15 15:50 |
Tokyo |
(Tokyo, Online) (Primary: On-site, Secondary: Online) |
Voltage-current characteristics for each arc length of break arcs genelated in a 48VDC/600A resistive load circuit Keiya Imori, Junya Sekikawa (Shizuoka Univ.) EMD2022-2 |
[more] |
EMD2022-2 pp.7-12 |
R, EMD |
2022-02-10 15:35 |
Online |
Online (Online) |
Investigation by numerical simulation of flow velocity of air blowing to electrical contact gap and its effect on break arcs Takashige Okuno, Junya Sekikawa (Shizuoka Univ.) R2021-45 EMD2021-13 |
In the interruption of DC high voltage circuits, it is desirable to extinguish the arc at the opening of the contacts in... [more] |
R2021-45 EMD2021-13 pp.12-17 |