| Presentation | 2019-03-01 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, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, applications using DC high voltage are increasing. In the DC circuit, there is a method called "magnetic blow-out" which extinguishes arc discharge occurring in the electrical contacts by applying a magnetic flux. In the experiment, the current changes in the range of 1 to 30 A. The voltage E is DC 100 V, the magnetic flux density is set to 0 mT, 5 mT, and 10 mT. In addition, the breaking speed of the electrical contact is constant at 100 mm / s. The contact materials are W (tungsten) and Ag (silver). The arc duration time ta and the arc energy Ea were obtained from the arc waveform. Furthermore, the change in the Lorentz force at the magnetic flux density set from the arc current waveform and the gap length at that time was calculated. As a result, ta decreased irrespective of the current when a magnetic field was applied. In the case of 10 mT, it was found that ta increases when the current is below a certain constant current. From this, the relationship between ta and the Lorentz force was estimated. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Arc discharge / Arc duration / Electrical contact / Lorentz force / Magnetic blow-out / Arc current / Magnetic flux |
| Paper # | EMD2018-69 |
| Date of Issue | 2019-02-22 (EMD) |
| Conference Information | |
| Committee | EMD |
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| Conference Date | 2019/3/1(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Shinichi Wada(TMC System) |
| Vice Chair | Yoshiki Kayano(Univ. of Electro-Comm.) |
| Secretary | Yoshiki Kayano(Muroran Inst. of Tech.) |
| Assistant | Yuichi Hayashi(ＮＡＩＳＴ) |
| Paper Information | |
| Registration To | Technical Committee on Electromechanical Devices |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Influence of current and magnetic flux density on magnetic blow-out on arc discharge at breaking of electrical contacts |
| Sub Title (in English) | |
| Keyword(1) | Arc discharge |
| Keyword(2) | Arc duration |
| Keyword(3) | Electrical contact |
| Keyword(4) | Lorentz force |
| Keyword(5) | Magnetic blow-out |
| Keyword(6) | Arc current |
| Keyword(7) | Magnetic flux |
| 1st Author's Name | Mano Kenta |
| 1st Author's Affiliation | Nippon Institute of Technology(NIT) |
| 2nd Author's Name | Koichiro Sawa |
| 2nd Author's Affiliation | Nippon Institute of Technology(NIT) |
| 3rd Author's Name | KIyoshi Yoshida |
| 3rd Author's Affiliation | Nippon Institute of Technology(NIT) |
| Date | 2019-03-01 |
| Paper # | EMD2018-69 |
| Volume (vol) | vol.118 |
| Number (no) | EMD-462 |
| Page | pp.pp.53-57(EMD), |
| #Pages | 5 |
| Date of Issue | 2019-02-22 (EMD) |