三相异步电动机动态特性的模块仿真

Model block simulation of dynamic character of three phase asynchronous motor

根据三相异步电动机的名牌数据来对其动态特性进行仿真研究。为此,首先推出了三相异步电动机在同步速坐标系下的动态特性数学模型,并引用了根据电机的铭牌数据来计算其参数的公式,以确定该动态数学模型中的各个参数值,这些参数包括电机定、转子的自感、电阻和定、转子间的互感,然后将该动态数学模型和参数计算公式相结合,建立了异步电动机动态特性的模块化仿真模型,编制了仿真软件,动态数学模型中的微分方程采用四阶龙格-库塔法求解。最后通过实例仿真电机的动态起动特性(Te-s曲线和I-s曲线)从而验证了该模型和仿真软件的正确性,为电机制造部门和使用部门分析三相异步电动机的动态特性提供了一个有力的工具。

This paper studied the dynamic character of asynchronous motor according to its nameplate data. First, this paper established the dynamic mathematical model of asynchronous motor. Second, this paper found the formula, which according to the nameplate data calculates asynchronous motor抯 parameters, such as the self-inductance and resistance of the stator and rotor, and the mutual inductance between the stator and rotor. On the basis of the above, this paper made a module抯 simulation software including graphic software to simulate the dynamic character of 3- phase asynchronous motor, the validity of the dynamic model and the software was tested and verified by an example. With this software, the dynamic character of an asynchronous motor with an arbitrarily load can be got very easily only by the nameplate data of the asynchronous motor.