摘要
电磁操动机构是断路器、接触器中的关键部件,针对现有电磁操动机构动态特性仿真效率较低的问题,提出了一种一体化的耦合仿真方法。通过动态网格技术,将空气域包含的网格在时间域中进行动态划分,从而将磁路的电磁场控制方程和机械结构的动力学方程进行动态耦合,在时间域内同时完成电磁操动机构动态响应过程中电磁变量和机械变量的求解。为了对仿真算法进行验证,以智能交流接触器的磁路结构作为实例,以PWM斩波以后的电压作为驱动信号,对所提出的仿真算法进行验证。仿真和实验结果表明,所提出的方法可以对电磁变量和机械变量完成一体化求解,仿真效率可以得到提高。同时,实验结果显示所提出的算法计算结果可靠。
Magnetic actuators are the key components of electric breakers and contactors. An integrated modeling framework has been developed to increase the simulation efficiency of the magnetic contactor. The air is meshed with the moving mesh method in the time domain that the electromagnetic governing equation can be coupled with the mechanical dynamic governing equation. The electromagnetic variables and the mechanical variables can be solved in the same time period for the dynamic response of the actuator. An intelligent ac contactor has been taken as the example to verify the simulation results. The applied voltage chopped with PWM signal is taken as the drive source. Simulation results show that the electromagnetic variables and the mechanical variables can be solved in an integrated framework and the simulation efficiency can be increased. Comparisons of simulations and experiments show that the dynamic response of the magnetic actuator can be properly predicted by the proposed method.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2015年第17期4524-4530,共7页
Proceedings of the CSEE
基金
国家自然科学基金项目(51205293)
浙江省重点科技创新团队项目(2010R50006-17)
浙江省"钱江人才计划"D类计划项目(QJD1302003)~~
关键词
操动机构
动态网格
电磁耦合
一体化建模
magnetic actuator
moving mesh
electromagnetic coupling
integrated modeling
