Direct-Current Forced Interruption and Breaking Performance of Spiral-Type Contacts in Aero Applications
This paper analyses the transient characteristics and breaking performance of direct-current (DC) forced-interruption vacuum interrupters in 270 V power-supply systems. Three stages are identified in forced interruption: the DC-arcing stage, current-commutation stage, and voltage-recovery stage. Dur...
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-05-01
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| Series: | Applied Sciences |
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| Online Access: | http://www.mdpi.com/2076-3417/7/6/512 |
| _version_ | 1828401293953073152 |
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| author | Wenlei Huo Jianwen Wu Bowen Jia Mingxuan Chen Suliang Ma Liying Zhu |
| author_facet | Wenlei Huo Jianwen Wu Bowen Jia Mingxuan Chen Suliang Ma Liying Zhu |
| author_sort | Wenlei Huo |
| collection | DOAJ |
| description | This paper analyses the transient characteristics and breaking performance of direct-current (DC) forced-interruption vacuum interrupters in 270 V power-supply systems. Three stages are identified in forced interruption: the DC-arcing stage, current-commutation stage, and voltage-recovery stage. During the current-commutation stage, the reverse peak-current coefficient k, which is a key design factor, is used to calculate the rate of current at zero-crossing (di/dt). MATLAB/Simulink simulation models are established to obtain the transient characteristics influenced by the forced-commutation branch parameters and the coefficient k. To study the breaking performance of spiral-type contacts, experiments are conducted for different contact materials and arcing times for currents less than 3.5 kA. During the DC-arcing stage, a locally intensive burning arc is observed in the CuW80 contact; however, it is not observed in the CuCr50 contact. On examining the re-ignition interruption results of the CuW80 contact, the intensive burning arc is found to be positioned within a possible re-ignition region. When the arcing time is longer than 1 ms, the intensive burning arc occurs and affects the breaking performance of the spiral-type contacts. If the DC-arcing stage is prolonged, the total arcing energy increases, which leads to a lower breaking capacity. |
| first_indexed | 2024-12-10T09:44:55Z |
| format | Article |
| id | doaj.art-bf5266b800834564bc5d74e562fd1f97 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-10T09:44:55Z |
| publishDate | 2017-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-bf5266b800834564bc5d74e562fd1f972022-12-22T01:53:53ZengMDPI AGApplied Sciences2076-34172017-05-017651210.3390/app7060512app7060512Direct-Current Forced Interruption and Breaking Performance of Spiral-Type Contacts in Aero ApplicationsWenlei Huo0Jianwen Wu1Bowen Jia2Mingxuan Chen3Suliang Ma4Liying Zhu5School of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, ChinaSchool of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, ChinaSchool of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, ChinaSchool of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, ChinaSchool of Automation Science and Electrical Engineering, Beihang University, Beijing 100191, ChinaInstitute of Spacecraft System Engineering CAST, Beijing 100191, ChinaThis paper analyses the transient characteristics and breaking performance of direct-current (DC) forced-interruption vacuum interrupters in 270 V power-supply systems. Three stages are identified in forced interruption: the DC-arcing stage, current-commutation stage, and voltage-recovery stage. During the current-commutation stage, the reverse peak-current coefficient k, which is a key design factor, is used to calculate the rate of current at zero-crossing (di/dt). MATLAB/Simulink simulation models are established to obtain the transient characteristics influenced by the forced-commutation branch parameters and the coefficient k. To study the breaking performance of spiral-type contacts, experiments are conducted for different contact materials and arcing times for currents less than 3.5 kA. During the DC-arcing stage, a locally intensive burning arc is observed in the CuW80 contact; however, it is not observed in the CuCr50 contact. On examining the re-ignition interruption results of the CuW80 contact, the intensive burning arc is found to be positioned within a possible re-ignition region. When the arcing time is longer than 1 ms, the intensive burning arc occurs and affects the breaking performance of the spiral-type contacts. If the DC-arcing stage is prolonged, the total arcing energy increases, which leads to a lower breaking capacity.http://www.mdpi.com/2076-3417/7/6/512transient characteristicsbreaking performanceforced interruptionspiral-type contactintensive burning arccontact materialsarcing timebreaking capacity |
| spellingShingle | Wenlei Huo Jianwen Wu Bowen Jia Mingxuan Chen Suliang Ma Liying Zhu Direct-Current Forced Interruption and Breaking Performance of Spiral-Type Contacts in Aero Applications Applied Sciences transient characteristics breaking performance forced interruption spiral-type contact intensive burning arc contact materials arcing time breaking capacity |
| title | Direct-Current Forced Interruption and Breaking Performance of Spiral-Type Contacts in Aero Applications |
| title_full | Direct-Current Forced Interruption and Breaking Performance of Spiral-Type Contacts in Aero Applications |
| title_fullStr | Direct-Current Forced Interruption and Breaking Performance of Spiral-Type Contacts in Aero Applications |
| title_full_unstemmed | Direct-Current Forced Interruption and Breaking Performance of Spiral-Type Contacts in Aero Applications |
| title_short | Direct-Current Forced Interruption and Breaking Performance of Spiral-Type Contacts in Aero Applications |
| title_sort | direct current forced interruption and breaking performance of spiral type contacts in aero applications |
| topic | transient characteristics breaking performance forced interruption spiral-type contact intensive burning arc contact materials arcing time breaking capacity |
| url | http://www.mdpi.com/2076-3417/7/6/512 |
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