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| Content Provider | IET Digital Library |
|---|---|
| Author | Zhou, Yannan Huang, Yulong Wen, Weijie Lu, Jingwei Cheng, Tiehan Gao, Shutong |
| Abstract | The fast mechanical switch is one of the key devices for high-voltage direct-current circuit breakers (DCCB), and the mechanical contacts separation time determines the operating time of hybrid mechanical circuit breakers. With the increasing of the voltage and power levels of DC system, numerous technical challenges begin to emerge. For high-voltage system, the new research and the series arrangements of very fast mechanical switches include designing new drive unit to satisfy larger load mass and longer travel stroke. Aimed to reducing the peak value of electric force, a novel drive unit by using modular double capacitors has been proposed here. Based on the equivalent circuit method (ECM), the mathematical model of Thomson coil (TC) actuator which is the drive unit in fast mechanical switch is established. First, the time sequence of capacitance discharge is studied. Then, the electromagnetic force can be divided into five types in different time sequences, and the characteristics of the electromagnetic force are analysed. Finally, it is concluded that using a combination electromagnetic force with three approximate peaks can reduce the impact of the metal plate, which improve the reliability of the fast switch. |
| Starting Page | 4345 |
| Ending Page | 4348 |
| Page Count | 4 |
| Volume Number | 2019 |
| e-ISSN | 20513305 |
| Issue Number | Issue 17, Jun (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2019/17 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8148 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2019-01-22 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | Actuators Capacitance Discharge Circuit Breaker DCCB Drive Unit ECM Electric Force Electromagnetic Actuators Electromagnetic Device Application Electromagnetic Force Electromagnetic Forces Equivalent Circuit Equivalent Circuit Method Fast Mechanical Switch High-voltage Direct-current Circuit Breaker High-voltage System Hybrid Mechanical Circuit Breaker Mechanical Contacts Separation Time Modular Double Capacitor Switch TC Actuator Thomson Coil Actuator |
| Content Type | Text |
| Resource Type | Article |
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