电器与能效管理技术Issue(10)：26-30,5.DOI:10.16628/j.cnki.2095-8188.2024.10.004
小型低压直流断路器借助永磁体提高临界负载电流开断能力的研究
Study on Improving Critical Load Current Breaking Ability of Miniature Low Voltage DC Circuit Breaker with Permanent Magnet
纵月菊 1李靖 1江松 2淦云建2
作者信息
- 1. 温州大学电气与电子工程学院,浙江温州 325000
- 2. 浙江创奇电气股份有限公司,浙江 温州 325603
- 折叠
摘要
Abstract
When the small low voltage DC circuit breaker breaks the critical load current,it is difficult to break the circuit because of the weak effect of magnetic blowing and gas blowing on the arc.A permanent magnet is added at the corner of the static contact assembly.Through analyzing the quenching mechanism of miniature low voltage DC circuit breaker,the magnetic field simulation and test verification of miniature low voltage DC circuit breaker before and after adding permanent magnet are carried out.The results show that the addition of permanent magnets can enhance the magnetic field intensity at the position of the arc,increase the Lorentz force of the arc,and help the miniature low voltage DC circuit breaker to improve the ability of breaking the critical load current.关键词
小型低压直流断路器/永磁体/磁场强度/临界负载电流/试验标准Key words
miniature low voltage DC circuit breaker/permanent magnet/magnetic field strength/critical load current/test standard分类
信息技术与安全科学引用本文复制引用
纵月菊,李靖,江松,淦云建..小型低压直流断路器借助永磁体提高临界负载电流开断能力的研究[J].电器与能效管理技术,2024,(10):26-30,5.
