摘要 针对小型异步电机在不同起动方式下起动特性的计算问题,文中基于有限元法建立电机二维电磁模型仿真计算电机的起动性能。考虑到二维模型中电机端部对电磁仿真整体的影响,采用场路结合的方法将定转子端部的电阻和漏感参数化等效处理到模型中。利用MagNet和Simulink软件依据起动电路结构搭建直接起动、Y-△降压起动、恒频压比起动的电源模型,仿真计算电机在不同起动方式下的起动时间、起动电流、起动速度等。仿真和实验测试结果表明,所建立的模型能准确仿真计算异步电机常见起动方式下的特性。 In view of the calculation of starting characteristics of small asynchronous motor in different starting modes,the two-dimensional electromagnetic model is constructed based on the finite element method to simulate the starting characteristics of the motor.Considering the effect of the motor end on the overall electromagnetic simulation in the two-dimensional model,the parameterization of the resistance and leakage inductance of the stator and rotor end are equivalently processed to the model by the method of field circuit combination.The power models of direct starting,Y-△step-down starting and constant frequency voltage ratio starting are established by MagNet and Simulink software according to the starting circuit structure.The starting time,starting current and starting speed of the motor under different starting modes are compared and analyzed.The results show that the model can accurately simulate the characteristics of asynchronous motors under common starting methods.
出处 《电子科技》 2021年第6期61-66,共6页 Electronic Science and Technology
基金 国家自然科学基金(61340015) 教育部协同育人项目(201701056027,201702064052) 教育部创新创业联合基金(201802060039) 河南省教育厅自然科学研究计划项目(2010A470003,2009B470003)。
关键词 异步电机 起动特性 有限元法 端部处理 直接起动 Y-△降压起动 恒频压比起动 二维 asynchronous motor starting characteristics finite element method end treatment direct starting Y-△step-down starting constant frequency voltage ratio starting two dimensional
