新型单极电磁开关分断过程动态特性研究

发布时间：2018-06-14 06:30

本文选题：电磁开关 + 协同仿真　；参考：《中国电机工程学报》2017年06期

【摘要】：电磁开关的分断过程是一个集电、磁、热、流体、机械为一体的过程。该文提出一种多物理场协同仿真方法,经过对相关软件的二次开发,建立了不同软件协同仿真系统。通过提取分断过程的耦合参量,将电子控制模块的设计融入电磁开关的三维动态计算中,建立一种快速去磁控制下电磁开关机械动力学模型,获取分断过程触头瞬态三维运动轨迹。仿真和实验结果表明,分断时在线圈两端施加负压可大幅度缩短开释时间,提高触头分断速度。此外,将磁流体动力学及动态网格技术应用到开关电弧的仿真,得到触头打开过程电弧温度场、气流场时空分布,从而实现对智能控制下电磁开关分断过程的整体仿真分析。该研究为改善开关的分断特性,设计高性能智能化开关提供参考。
[Abstract]:The breaking process of electromagnetic switch is a process of integrating electricity, magnetism, heat, fluid and mechanism. In this paper, a multi-physical field collaborative simulation method is proposed. Through the secondary development of related software, different software collaborative simulation systems are established. By extracting the coupling parameters of the breaking process, the design of the electronic control module is integrated into the three-dimensional dynamic calculation of the electromagnetic switch, and a mechanical dynamic model of the electromagnetic switch under the rapid demagnetization control is established. The transient 3D motion trajectory of contact during breaking process is obtained. The simulation and experimental results show that applying negative pressure to the two ends of the coil can greatly shorten the opening time and increase the breaking speed of the contact. In addition, the magnetohydrodynamics and the dynamic grid technology are applied to the simulation of the switch arc, and the arc temperature field and the airflow field are obtained in the process of the contact opening, so that the whole simulation analysis of the breaking process of the electromagnetic switch under intelligent control can be realized. The research provides a reference for improving the switching characteristics and designing the high performance intelligent switch.
【作者单位】：福州大学电气工程与自动化学院;
【基金】：国家自然科学基金项目(51277031) 福建省科技厅重点项目(2014H0002)~~
【分类号】：TM564

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