考虑磁饱和铁损及其补偿的感应电机仿真研究

Research on Consideration of Iron Losses and its Compensation and Magnetic Saturation

在各类型的交流电机中,感应电机尤其是鼠笼型由于其经济、可靠耐用在工业中最常用。而对电机模型的建立与控制研究往往认为是理想的,并未考虑铁损、磁通饱和等实际因素。实际中铁耗电阻是频率的函数,等效磁化电抗也是变值,是主磁通的函数。为对其进行精确控制,考虑实际情况的电机控制的仿真研究是很有必要的。因此建立考虑实际铁损与磁饱和以及理想模型下的电机动态模型,并在直接转矩控制(DTC)方式下对速度控制模式和转矩控制模式研究其实际动态性能并加入抗积分饱和PID,改善了电机的速度响应。

Among all type of AC machines,induction motor especially squirrel cage machines are widely used for economy,reliable and durable.However modeling and controlling of motor are based on ideal model and actual reasons are not taken into account.In practical iron loss resistor is functional of stator frequency and magnetizing inductance is functional of main flux.For accuracy controlling,it's necessary to consider the actual situations.The paper constructed dynamical model based on actual situations and study dynamical performance in both consideration with iron losses and saturation and without them in speed and torque modes under DTC controlling as well as improved the speed response by introducing anti wind up PID.