摘要
接触器的动态特性分析对于其优化设计非常重要。针对一种新型带电流反馈系统的永磁智能接触器,提出了一组多态方程组。该方程组的状态与反馈电流值相耦合,并随着反馈电流和线路中多个比较器的输出信号的变化而相互转化,同时其耦合了电路、电磁场和可动部分摩擦的影响。利用该方法,基于多体动力学模型,模拟仿真了带电流反馈永磁接触器的整个闭合过程。实验证明所提方法是正确的。利用所提出的方法,研究了各硬件参数对控制系统性能的影响,并给出了其设计准则。实验证明采用最佳控制参数的智能接触器较原样机可大幅节能并减少触头弹跳。
It is important to analyze dynamic behaviors for the optimum design of AC contactors. Based upon a kind of intelligent permanent magnetic （PM） contactor with current-feedback system, this paper presented a method to obtain the dynamic characteristics of the contactor, and constructed a set of multi-field equations with the state coupled with feedback current signals, the peak value of internal toothed wave, and outputs of several comparators in the circuit. The experimental results proved the correctness of the method. Then, the influence of the hardware’s parameters on the performance of the control system was analyzed with this method; and the design criterion was given to these parameters based on the analysis results. The experiments prove that the intelligent permanent contactor with optimal parameters can reduce the contact bounce and save the energy.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2010年第15期118-124,共7页
Proceedings of the CSEE
关键词
永磁智能接触器
动态特性
带电流反馈系统
多态方程组
intelligent permanent contactor
dynamiccharacteristics
current-feedback system
multi-field equationsset
