动磁式双定子直线压缩机动态特性仿真研究  

Research on dynamic characteristics simulation of moving-magnet double stators linear compressor

作　　者：雷美珍[1] 王立强 夏永明[1] 

机构地区：[1]浙江理工大学机械与自动控制学院,杭州310018 [2]浙江水利水电学院机械与汽车工程学院,杭州310018

出　　处：《低温与超导》2018年第1期7-11,35,共6页Cryogenics and Superconductivity

基　　金：浙江省科技厅公益技术应用研究计划项目(2017C33158;2017C33160);浙江理工大学科研启动基金项目(14022210-Y)资助

摘　　要：针对一种动磁式双定子直线压缩机,在分析电机运行原理的基础上,建立其等效磁路模型,推导了气隙磁链、电磁力、电磁力系数、反电动势系数和电感等重要控制参数的解析公式,并通过有限元计算对解析结果进行验证。根据控制参数计算结果,对直线压缩机系统的动态特性进行仿真研究。重点分析了电机电流、动子位移和速度随时间变化规律及活塞振幅随频率变化特性。研究结果对直线压缩机活塞的行程控制、弹簧系统的谐振设计以及后续的控制系统设计提供重要理论依据。For a moving- magnet double stators linear compressor, the equivalent magnetic circuit model was established to calculate the air gap flux, eiectromagnetic force, electromagnetic force coefficient, back EMF coefficient and inductance of motor on the basis of analyzing the motor operation principle. Then, finite element analysis for the motor was implemented to verify the analytical results. According to the calculation results of the control parameters, the dynamic characteristics of the linear compressor system were simulated. The variation law of motor current, mover displacement and velocity with time and the variation of piston amplitude with frequency were emphatically analyzed. The results provide important theoretical basis for the stroke control of the linear compressor piston, the resonant design of the spring system and the design of the subsequent control system.

关 键 词：直线压缩机 双定子 控制参数 动态特性 

分 类 号：TB652[一般工业技术—制冷工程]