多相Y绕组同步电动机数学模型研究

多相电动机有着广泛的应用,建立数学模型对研究其特性非常重要.分析了多相Y绕组同步电动机的特点,建立多相Y绕组同步电动机基于dq坐标系下的数学模型.通过研究多相电机各相磁场、电压和电流的关系,获得了该电机简化的数学模型,该模型可作为不同相数Y绕组同步电动机的通用数学模型.利用Simulink进行了计算机仿真,通过对六相双Y同步电动机的起动过程进行的仿真,验证了简化模型与完整模型描述物理模型的一致性.该模型的建立对多相同步电动机运行稳定性能和过渡过程的分析具有一定参考价值.

Research on a mathematical model of a multi-phase Y-coil synchronous motor

Multi-phase motors have widespread applications, thus it is essential to study their features through mathematical models. After deep analysis of the characteristics of the multi-phase Y-coil synchronous motor, its mathematical model was set up in the dq-coordinate system. The authors simplified the mathematical model based on the characteristics of magnetic field, voltage, and current, in various phases that can be used as a universal mathematical model for Y-coil synchronous motors with variable phases. A simulation of a six-phase double Y-coil synchro- nous motor was performed with Simulink software. The simulation of the start-up process proves there is consistency between the simplified model and the original unsimplified model in describing the physical characteristics of this motor. The establishment of this model of multi-phase synchronous motors allows simpler analysis of the operating stability and transition processes of multi-phase synchronous motors.