摘要随着电力电子技术的进步，交流电机调速技术也取得了显著的进步。异步电机无速度传感器矢量控制技术提高了交流传动系统的可靠性,降低了系统的实现成本，是现代电力牵引机车控制系统的一个重要研究方向，逐渐成为研究的热点。58138

本文对交流电机控制技术和无速度传感器矢量控制技术的发展过程进行了综述，阐述了矢量控制、坐标变换、电流跟踪型逆变器的基本原理，并介绍了异步电机在不同坐标系下的数学模型，为进一步研究异步电机无速度传感器矢量控制提供了理论基础。在掌握无速度传感器矢量控制原理的理论基础上，建立了基于模型参考自适应（MARS）的无速度传感器矢量控制系统的设计。基于MARS的无速度传感器矢量控制系统利用电动机定子电压方程和电流方程得到电动机转速的模型参考自适应辨识算法，利用MATLAB/Simulink对基于该速度辨识模型的无速度传感器异步电动机矢量控制系统进行了详细的仿真研究。

仿真结果表明本文所采用的无速度传感器矢量控制系统是有效的、合理的。

毕业论文关键词 异步电机；无速度传感器；矢量控制；模型参考自适应

Design of control system for electric traction locomotive based on speed sensorless

Abstract Along with the development of power electronic technology, AC motor speed control technology has made remarkable progress.Induction motor speed sensorless vector control technology to improve the reliability of the AC drive system, reducing the system implementation costs, is the modern electric traction locomotive control system is an important research direction, has gradually become a hot research.

The of AC motor control technology and without speed sensor vector control technology development process are reviewed in this paper, describes the vector control, coordinate transformation, current tracking principle of inverter, and introduces the mathematical model of asynchronous motor in different coordinate systems, for further study of asynchronous motor speed sensorless vector control to provide the theoretical basis.Based on the theory of the control principle of the speed sensorless vector control, the design of speed sensorless vector control system based on model reference adaptive (MARS) is established.Based on the Mars without speed sensor vector control system get the rotating speed of the motor model reference adaptive identification algorithm by using the equations of motor stator voltages and currents, using Matlab / Simulink based on the speed estimation model without speed sensor of induction motor vector control system, detailed simulation research is done.

The simulation results show that the speed sensorless vector control system used in this paper is effective and reasonable.

Keywords  asynchronous motor; speed-sensorless; vector control; MRAS

目录

1 绪论 1

1.1课题的目的和意义 1

1.2   交流电机控制技术的国内外发展状况 2

1.2.1  无速度传感器矢量控制技术的发展 2

1.2.2  无速度传感器矢量控制磁链观测方法综述 3

1.3   无速度传感器矢量控制发展趋势 4

1.4  本课题的主要内容 4

2 异步电机的矢量控制 5

2.1 矢量控制的基本思想 5

2.1.1 矢量控制的坐标变换 6

2.1.2 转子磁场定向的矢量控制系统