摘要：矢量控制是在转子磁链定向的同步旋转坐标系中把定子电流分解为励磁和转矩两个分量,以实现异步电动机磁场和转矩的解耦控制。
本文主要研究以TMS320F2812为控制核心的矢量控制系统。文中阐述了矢量控制的基本理论及异步电机在不同坐标系下的动态数学模型，分析了SVPWM波的算法及仿真实现。利用Matlab/Simulink搭建了磁链开环的矢量控制系统模型，并进行了仿真研究。设计了基于DSP的矢量控制系统的软硬件，硬件系统以TMS320F2812为控制核心，逆变电路采用MOSFET器件，组成了转速、电流闭环系统。软件设计采用基于Matlab的RTW自动生成DSP可执行的代码以实现对电机的实时控制。这种屏蔽DSP编程细节的电机控制方法无疑为今后开发更高性能的变频调速系统奠定了良好的基础。7153
关键词：转子磁链定向矢量控制；数字信号处理器（DSP）；空间矢量脉宽调制（SVPWM）；Matlab/Simulink仿真
A Design of DSP Based Vector Control Variable Frequency Variable Speed System
Abstract: Vector control is that stator current can be decomposed into the exciting and the torque component under synchronous rotating coordinate system based on rotor field orientation，so the magnetic field and torque can be separately controlled in asynchronous motor.
This paper focuses on a vector control system using TMS320F2812 as control core. The basic principle of vector control, asynchronous motor mathematic models under different coordinate systems, and the algorithm and simulation of SVPWM are presented in this paper. Using the Matlab/Simulink , the open-loop flux vector control system is built and simulated, then the hardware and software based on DSP are designed. The hardware adopts TMS320F2812 as control core, the MOSFET inverter as the main power circuit to form a closed-loop control system by detecting current and rotor speed. Software designed in this paper is based on Matlab RTW and executable codes is automatically generated to implement real-time control of the motor .This kind of method which avoids a lot of details on the programming of DSP is undoubtedly laid a good foundation for the future development of high-performance frequency control system.
Keywords: Vector Control Based on Rotor Flux Orientation; Digital Signal Processor (DSP); Space Vector Pulse Width Modulation (SVPWM); Matlab/Simulink Simulation
目  录
1绪论    1
1.1交流变频调速系统的发展    1
1.1.1 矢量控制技术的发展奠定高性能化基础    1
1.1.2 数字控制技术的发展提供了技术手段和保证    2
1.1.3 功率环节PWM技术的发展进一步提高性能    2
1.2 研究背景及研究意义    3
1.3 论文主要内容及结构安排    3
2 矢量控制理论    5
2.1 异步电动机动态数学模型    5
2.1.1 异步电动机三相原始模型    5
2.1.2 坐标变换    6
2.1.3 异步电动机在旋转正交坐标系上数学模型    8
2.1.4异步电动机在同步旋转正交坐标系上状态方程    9
2.2 异步电动机按转子磁链定向的矢量控制系统    9
2.2.1 矢量控制理论的基本思想    10
2.2.2 按转子磁链定向矢量控制系统实现    10
2.2.3 转子磁链计算    11
3电压空间矢量脉宽调制（SVPWM）    13
3.1 SVPWM基本原理    13
3.2 SVPWM算法的实现    14
3.3 SVPWM仿真模块的搭建    16
4 矢量控制系统的MATLAB/SIMULINK仿真    22
4.1 矢量控制系统各模块介绍    22
4.1.1 异步电动机模型    22 DSP矢量控制变频调速系统设计+文献综述:http://www.751com.cn/zidonghua/lunwen_4967.html