摘要
针对大截面钢坯闪光焊接的特点,分析了大功率闪光焊机电源的工作原理,其主电路采用变压器初级调压、次级整流的拓扑结构。建立了基于Simulink功率模块的具有非线性特征的主电路模型和动态电阻负载模型。动态电阻主要由焊件的电阻和焊件端面之间的接触电阻组成。仿真结果表明,建立的主电路模型和动态电阻负载模型能够较为真实地模拟闪光对焊的动态过程,推动了大功率闪光焊机电源系统的数字化建模和仿真的研究水平。
According to characteristic of flash butt welding of large cross billets, this article presents the main circuit configuration of flash butt welding power system. The main circuit adopts thee-phase voltage controller with secondary rectification. Based on the Simulink environment,the main circuit model and dynamic model of resistance load with non-linear features are built. Research shows that the simulation model can really simulate the dynamic process of flash butt welding,the digital model and simulation of power system of flash butt welder are improved.
出处
《电焊机》
北大核心
2013年第4期38-40,71,共4页
Electric Welding Machine
基金
天津市应用基础及前沿技术研究计划资助项目(11JCYBJC06500)
