小型断路器双金属片热弯曲特性的实验仿真  

Experimental Simulation of Bimetallic Strip Thermal Flexivity Specialty in Miniature Circuit Breaker

作　　者：潘庆元 PAN Qingyuan(ABB LV Installation Materials Co.,Ltd.,Beijing 100176,China)

机构地区：[1]北京ABB低压电器有限公司,北京100176

出　　处：《电器与能效管理技术》2022年第2期46-52,共7页Electrical & Energy Management Technology

摘　　要：以小型断路器热脱扣用双金属片为研究对象,分别从理论计算、试验分析和数值仿真等角度对热弯曲特性进行了分析,提出了双金属片优化设计新思路,并以此为基础建立了双金属片热弯曲特性的仿真平台。开发和设计了热双金属片弯曲性能试验专用成套夹具,完善了试验平台和方法。利用数值仿真替代部分前期试验,结合实验设计方法,可快速求得设计参数最优解,降本增效。仿真平台还可应用于以热脱扣力脱扣行程为校验目标的机构参数协同设计。This paper studied the thermal tripping bimetallic strip in miniature circuit breaker(MCB),analyzed the thermal flexivity specialty from aspects of theoretical calculation, experiment and digital simulation, respectively.A new method was proposed for bimetallic strip optimization design, and a platform was established to simulate the thermal flexivity of the bimetallic strips.A set of special fixture was developed and designed for bimetallic strip flexivity performance experiments, the experiment platform and the method were improved.Using numerical simulation instead of part of preliminary experiments, with DOE,the optimal solution of design parameters could be solved rapidly, therefore the investment and time cost were both saved.In addition, the simulation platform could also be used for the collaborative design of operating mechanism parameters, of which the verification objective is tripping force and tripping stroke.

关 键 词：小型断路器 双金属片 热比弯曲 有限元 实验仿真 

分 类 号：TM561[电气工程—电器]