1、摘要 本文的研究内容是“异步电动机矢量控制系统设计与仿真研究”。 在矢量控制 技术出现之前， 交流调速系统多为 V / f 比值恒定控制方法， 又常称为标量控制。 采用这种方法在低速及动态（如加减速）、加减负载等情况时，系统表现出明显 的缺陷，所以交流调速系统的稳定性、启动、低速时的转矩动态相应都不如直流 调速系统。随着电力电子技术的发展，交流异步电机控制技术全面从标量控制转 向了矢量控制，采用矢量控制的交流电机完全可以和直流电机的控制效果相媲 美，甚至超过直流调速系统。 矢量控制是在电机统一理论、 机电能量转换和坐标变换理论的基础上发展起 来的。它的思想就是将异步电动机模拟成直流电动机来控制
2、，通过坐标变换，将 定子电流矢量分解为按转子磁场定向的两个直流分量并分别加以控制， 从而实现 磁通和转矩的解耦控制，建立三相交流绕组、两项交流绕组和旋转的直流绕组三 者之间的等效关系，从而求出异步电动机绕组等效的直流电机模型，以便按照对 直流电机的控制方法对异步电机进行控制。 因此他可以实现对电机电磁转矩的动 态控制，优化调速系统的性能。本文针对异步电动机磁链闭环矢量控制进行研究 和探索。通过空间矢量的坐标变换，对系统进行建模，其中包括直流电源、逆变 器、电动机、转子磁链电流模型、ASR、ATR、AR 等模块。并对控制系统进 行了 MATLAB/Simulink 仿真分析。 关键词：异步电动机
3、； 矢量控制； MATLAB 仿真 ABSTRACT： The content of this study is the design of the Asynchronous motor vector control system and its simulation study. Before the advent of vector control technology, most of alternating current speed control system are constant V/f ratio control method which is also often ref
4、erred as the scalar control. This approach in low-speed and dynamic (such as acceleration and deceleration), such as addition and subtraction load, the system showed obvious defects, so the stability of AC variable speed system, start torque at low speed dynamic response is not such as a DC tune spe
5、ed system. With the development of power electronics technology, the AC induction motor control technology fully from the scalar control to vector control, vector control of AC motor can be comparable and DC motor control effects, even more than the DC speed control system. Vector control is develop
6、ed on the basis of the motor unified theory of electrical and mechanical energy conversion and coordinate transformation theory. Its ideology is the asynchronous motor simulation into a DC motor to control, coordinate transformation, decomposition of the stator current vector for the rotor field oriented two DC components were controlled, in order to achieve the decoupling of flux and torque control, three-phase AC winding, two exchanges winding and rotation of the DC winding equivalence b
