摘要
为计算反复短时工作条件下电磁继电器温度场分布及其影响因素,提出了一种新的计算模型——填充层法,通过修改填充层材料参数即可用一个网格剖分模型模拟触点分断与闭合两种状态。运用Ansys软件对继电器进行了反复短时工作制下的瞬态温度场计算,根据结果总结出了瞬态温度场的分布规律和影响因素;同时得出了继电器内部主要热源与电流等级的关系;最后,提出了一种减小继电器温升的优化方法。
In order to better understand the temperature distribution of sealed electromechanical relay and its influence factors,a new modeling space-filling-model is introduced in this paper.The model can use one meshing model to simulate both close and open status through modifying the parameters of the filling material.Using software ANSYS,the paper simulates the transient temperature field of sealed electromechanical relay in the repeated short-term system.According to the calculation,the distribution of transient temperature field and its influence factors are summarized.Besides,the paper gives the relationship between the main heat source inside the relay and the current level.Finally,the paper puts forward an optimization method to decrease the temperature rise of the relay.
出处
《电工技术学报》
EI
CSCD
北大核心
2011年第1期57-62,共6页
Transactions of China Electrotechnical Society
关键词
电磁继电器
填充层法
瞬态温度场
热源
Electromechanical relay
space-filling-model
transient temperature field
heat source
