考虑碰撞弹跳的接触器动力学模型建立及其弹跳特性影响因素分析  

Establishing of Contactor Dynamic Model Considering Collision Bounce and Analysis of Influencing Factors of Bounce Characteristics

作　　者：杨文英[1] 刘兰香[1] 刘洋[1] 翟国富[1] Yang Wenying;Liu Lanxiang;Liu Yang;Zhai Guofu(Reliability Institute for Electric Apparatus and Electronics Harbin Institute of TechnologyHarbin 150001 China)

机构地区：[1]哈尔滨工业大学电器与电子可靠性研究所,哈尔滨150001

出　　处：《电工技术学报》2019年第9期1900-1911,共12页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金青年基金项目资助(51507033)

摘　　要：接触器通断过程中,动、静触头以及衔铁、轭铁间的碰撞接触使接触器工作系统的运动状态变得极为复杂,合理处理动作过程中的碰撞接触问题是研究接触器动态特性的关键。以某型号螺线管式大功率接触器为例,基于分段线性结构动力学思想以及Kelvin-Voigt模型,考虑了能量损失、碰撞变形等因素对接触器碰撞弹跳的影响,给出了考虑碰撞弹跳的接触器动力学运动方程,并建立了接触器碰撞弹跳动力学模型。将接触器动力学模型与电磁机构有限元模型相结合,提出了一种快速耦合接触器机-电-磁-运动的多物理场计算方法,研究了考虑碰撞弹跳的接触器动态特性。然后利用接触器动态特性实验装置证明了该文提出的多物理场耦合计算方法的正确性。最后,分析了超程弹簧预压力、线圈励磁电压、触头开距和返回弹簧预压力对接触器碰撞弹跳的影响,从而为抑制接触器碰撞弹跳提供理论依据。The motion of the contactor system becomes extremely complex due to the collision contacts between moving contact and static contact, armature and yoke in the on-off process of contactor. The key to investigate the dynamic characteristics of the contactor needs to properly deal with the collision contact problem. In this study, taking a solenoid type high-power contactor for research object, the dynamic equation for motion and kinetic model of the contactor including collision bounce is established based on the piecewise linear structure dynamics method and KelvinVoigt model, in which the influences of energy loss, collision deformation factors on collision bounce are considered. combining the kinetic model with the finite element model of electromagnetic mechanism, a multi-physics calculation method for the fast coupling structual-electro-magneticmotion is proposed. The dynamic characteristics of the contactor considering the collision bounce are studied. Then, the correctness of the multiphysics coupling calculation method proposed in this paper is proved by the contactor dynamics experimental device. Finally, the influences of the overtravel spring preload, coil exciting voltage, contact distance and return spring preload on the contact bounce characteristics of the contactor are analyzed, and the results presented in this study provide the theoretical basis for suppressing the contact bounce.

关 键 词：接触器 碰撞接触 快速耦合 机-电-磁-运动 弹跳特性 

分 类 号：TM572.6[电气工程—电器]