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塑壳断路器热脱扣特性的仿真与试验分析
引用本文:于永站,谭昌柏,张金泉,王华章.塑壳断路器热脱扣特性的仿真与试验分析[J].低压电器,2012(7):5-9,18.
作者姓名:于永站  谭昌柏  张金泉  王华章
作者单位:1. 南京航空航天大学机电学院,江苏南京,210016
2. 江苏大全凯帆电器有限公司,江苏镇江,212200
摘    要:对塑壳断路器(MCCB)热脱扣特性进行研究。采用有限元软件Ansys的电—磁—热结构耦合分析方法,建立了MCCB热脱扣特性的有限元模型。根据有限元模型对脱扣器热弹性变形进行仿真,模拟了热双金属片在不同工作电流情况下的温度分布规律、位移变化规律和热脱扣器冷态动作特性曲线。断路器热脱扣特性试验的结果表明,仿真得到的温度分布等热脱扣特性数据与实测数据吻合较好。该仿真分析为断路器的改进和优化提供了新的技术途径。

关 键 词:塑壳断路器  热脱扣特性  有限元模型  仿真  热双金属片

Simulation and Experiment Research on Thermal Tripping Capacity of Moulded Case Circuit Breaker
YU Yongzhan , TAN Changbai , ZHANG Jinquan , WANG Huazhang.Simulation and Experiment Research on Thermal Tripping Capacity of Moulded Case Circuit Breaker[J].Low Voltage Apparatus,2012(7):5-9,18.
Authors:YU Yongzhan  TAN Changbai  ZHANG Jinquan  WANG Huazhang
Affiliation:1.College of Mechanical Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing 210016,China; 2.Jiangsu DAQO KFINE Electric Co.,Ltd.,Zhenjiang 212200,China)
Abstract:The thermal tripping capacity of moulded case circuit breaker(MCCB) was researched.The electromagnetic-thermal-structure method of Ansys software was utilized to construct a finite element simulation model of MCCB.Thermal elastic deformation of MCCB was simulated based on this CAE model,and temperature distribution and displacement of thermal-bimetal under different operation currents,and cold action characteristic curve of thermal release were simulated and obtained.An experiment was designed to examine thermal operation characteristics of MCCB.The results show that the simulation data of thermal operation characteristics such as temperature distribution match the experimental data very well.The methodology of thermal tripping capacity analysis based on simulation provides a new technical way to improve and optimize the design of MCCB.
Keywords:moulded case circuit breaker(MCCB)  thermal operation characteristics  finite element model  simulation  thermal-bimetal sheets
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