菜单
  
    摘要如今,随着能源危机的爆发和汽车燃油消耗带来的环境污染日益严重,世界上的发达国家都在积极开展电动汽车技术的研究。为了减小电动汽车驱动系统的体积,提高系统的稳定性,人们纷纷开始研究异步电机的无速度传感器矢量控制技术。然而这种方法首先要解决两个问题:转子磁链观测和转速估计。论文深入研究了基于模型参考自适应法(MRAS)的无速度传感器按转子磁链定向的系统控制方法,采用空间矢量脉宽调制技术(SVPWM)和转子磁链定向算法,根据MRAS的原理进行转速估计。
    本文先根据基本电机原理建立了异步电机在矢量空间不同坐标系下的数学模型,介绍了矢量控制系统并对SVPWM的原理进行了深入分析;接着对MRAS技术进行了详细介绍,给出了转子磁链定向下的转速估计方程和磁链方程;最后对上述系统进行仿真,在Matlab/Simulink平台上对系统进行建模及仿真,仿真结果说明MRAS系统进行转速估计时精确性很高,整个系统稳定可靠。
    关键词  异步电机  无速度传感器  空间矢量脉宽调制技术(SVPWM)  26089
    模型参考自适应法(MRAS) 
    毕业论文设计说明书外文摘要
    Title  The research of motor control technology for electric vehicle with speed-sensorless                                                 
    Abstract
    Currently, under the background of energy crisis and the serious pollution caused by the automobile exhaust, almost developed countries are committed to the research and development of the electric car. In order to reduce the volume the electric vehicle and improve the reliability of the system, induction motor speed sensorless vector control system has become the focus of attention of the people. However, such systems need to solve two problems: the rotor flux observation and speed estimation. In this paper,a novel scheme of speed sensorless field oriented vector control system based on MRAS (Model Reference Adaptive System)is proposed. By using voltage space vector pulse width modulation(SVPWM) control technology and field-oriented control(FOC) algorithm, in accordance with the principle of MRAS, the program estimated the rotor speed.
    First, the mathematics model in different coordinates of state space is established, the vector control system was introduced and the paper discussed the principle of SVPWM in-depth. Then, the principle of MRAS is discussed in detail, the function of speed estimation and the equation of rotor flux observation is established. At last, the simulation is taken. The emulate modulations of the system are constituted on Matlab/Simulink, and the results prove that the MRAS method can estimate speed efficiently, and the system is feasibility.
    Keywords  Induction motor  Speed sensorless  SVPWM  MRAS
    目  次
    1  绪论    1
    1.1  课题研究的背景及意义    1
    1.2  电动汽车的发展历史及现状    1
    1.2.1  国内电动汽车发展现状    1
    1.2.2  国外电动汽车发展现状    2
    1.3  电动汽车中异步电机的应用    2
    1.4  无速度传感器矢量控制技术的发展现状    3
    2  异步电机矢量控制技术    6
    2.1  坐标变换    6
    2.1.1  CLARK变换(3/2变换)    7
    2.1.2  PARK变换(2s/2r变换)    8
    2.2  三相异步电机的数学模型    9
    2.2.1  三相静止坐标系下的电机数学模型    10
  1. 上一篇:三维成像技术中光照调整算法的研究与实现
  2. 下一篇:基于ATT7022的电量采集模块硬件设计
  1. 单片机无线通信的恒压供水系统设计+程序

  2. MSP430无线传感器网络的家...

  3. Arduino单片机的无线数据传...

  4. LabVIEW的无线火灾报警系统设计+电路图

  5. ZigBee+LabVIEW的条形码无线采...

  6. MSP430+LabVIEW的CTD传感器的设计+电路图

  7. 四电极电导率传感器的设计

  8. 河岸冲刷和泥沙淤积的监测国内外研究现状

  9. 大众媒体对公共政策制定的影响

  10. 酸性水汽提装置总汽提塔设计+CAD图纸

  11. 乳业同业并购式全产业链...

  12. 十二层带中心支撑钢结构...

  13. 中考体育项目与体育教学合理结合的研究

  14. java+mysql车辆管理系统的设计+源代码

  15. 电站锅炉暖风器设计任务书

  16. 杂拟谷盗体内共生菌沃尔...

  17. 当代大学生慈善意识研究+文献综述

  

About

751论文网手机版...

主页:http://www.751com.cn

关闭返回