摘要
摘要
开关磁阻电机调速系统具有稳固、结构简便、工作可靠、成本低廉、系统可灵活控制、调速性能优良、运行效率较高、温度上升低等多个有点，他综合了交流变频调速系统的稳固耐用、比较适用于恶劣环境下的使用的优良特性和直流调速系统关于优良的可控制性的特点，被专家视为电气传动系统发展过程中的一个里程碑。
开关磁阻发电机（SRG）的定子磁极和转子磁极都是凸极形状，而且只在定子磁极上绕有集中线圈，但是转子磁极上既没有缠绕线圈，也不是永磁铁。因此和其它电机相比较，具有结构简单、牢固、转矩惯性比高以及调速范围宽等优点。现在已经广泛应用于航空、牵引和家用电器等领域。然而在中低速下的发电阶段期间电机的运动电势有可能会低于发电电压，从而使电机利用率和转换效率降低。为此本课题拟采取电流斩波的方式解决，并在其外部再搭建电压闭环。本文利用MATLAB软件对一台三相12/8极SRG进行仿真，并求取和分析数据。
关键词 开关磁阻发电机；电流斩波；电压闭环；MATLAB仿真
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Abstract Abstract
Switched reluctance motor control system with a solid, simple structure, reliable operation, low cost, flexible controlled system, speed performance, high efficiency, low temperature rise of more than a little. It combines the advantages of the AC variable speed system such as stable and durable, more suitable for harsh environment used and the DC speed control system such as it can be controlled easily. Which is seen by experts as a milestone in the development of electric drive system.
The stator poles and rotor poles of the Switched Reluctance Generator (SRG) are all salient pole shape, and only on the stator pole has concentrated coil around, there's not only coil winding on the rotor magnetic pole, but also no permanent magnets.So compared with other motors, it was good in simple structure, strong, high torque to inertia ratio and wide speed range and so on. Now widely used in aviation, traction, and home appliances.However, the motor's electric potential of movement may be less than the generated voltage during the low power phase, thus reduce motor utilization and conversion efficiency. Therefore this topic proposed take current chopped wave solutions, and re-build their external voltage loop.This paper use of MATLAB software to a three-phase 12/8 pole SRG simulation, and calculate and analysis the data.
Keywords Switched Reluctance Generator; Current chopping; Voltage loop; MATLAB simulation
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目 录
摘要 ........................................................................................................................ I Abstract ................................................................................................................. II 第1章 绪论 .......................................................................................................... 1
1.1 课题背景 ................................................................................................. 1 1.1.1 选题目的和意义 .............................................................................. 1 1.1.2 国内外文献综述 .............................................................................. 2 1.1.3 研究的基本内容 .............................................................................. 3 第2章 开关磁阻电机的结构和工作原理 .......................................................... 4
2.1 开关磁阻电机的结构 ............................................................................. 4 2.2 开关磁阻电机的工作原理 ..................................................................... 5 2.3 开关磁阻电机发电状态的工作特点 ..................................................... 6 2.3.1 开关磁阻电机的有效发电条件 ...................................................... 6 2.3.2 开关磁阻电机发电运行的自然输出特性 ...................................... 7 2.3.3 开关磁阻电机发电运行的等效模型 .............................................. 8 2.3.4 开关磁阻电机发电运行的特点 ...................................................... 9 2.4 本章小结 ................................................................................................. 9 第3章 开关磁阻发电机的方程及其数学模型 ................................................ 10
3.1 开关磁阻发电机的方程 ....................................................................... 10 3.1.1 电压方程 ........................................................................................ 10
3.1.2 磁链方程 ........................................................................................ 11 3.1.3 机械运动方程 ................................................................................ 11 3.1.4 转矩方程 ........................................................................................ 12 3.1.5 电动势平衡方程 ............................................................................ 12 3.2 开关磁阻发电机的数学模型 ............................................................... 12 3.2.1 相电感的数学模型 ........................................................................ 14 3.2.2 相磁链的数学模型 ........................................................................ 15 3.3 本章小结 ............................................................................................... 16 第4章 开关磁阻发电机的控制系统 ................................................................ 17
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4.1 开关磁阻发电机的不对称功率变换器 ............................................... 17 4.1.1 自励模式 ........................................................................................ 17 4.1.2 他励模式 ........................................................................................ 17 4.1.3 不对称功率变换器的工作状态 .................................................... 18 4.2 开关磁阻发电机的控制方式 ............................................................... 19 4.2.1 角度位置控制（APC） ................................................................ 20 4.2.2 电流斩波控制（CCC） ................................................................ 21 4.2.3 脉宽调制控制（PWM） .............................................................. 22 4.3 开关磁阻发电机的稳压控制系统 ....................................................... 23 4.3.1 稳压装置 ........................................................................................ 24 4.3.2 滞环控制器 .................................................................................... 24 4.3.3 电压指令发生器 ............................................................................ 25 4.4 本章小结 ............................................................................................... 26 第5章 开关磁阻发电机输出电压控制系统的仿真 ........................................ 27
5.1 仿真参数的设置 ................................................................................... 27 5.2 开关磁阻发电机线性模型仿真 ........................................................... 27 5.2.1 相电感仿真模型 ............................................................................ 27 5.2.2 相电流控制仿真模型 .................................................................... 28 5.2.3 不对称功率变换器仿真模型 ........................................................ 30 5.2.4 开关磁阻发电机的典型的仿真模型 ............................................ 31 5.3 本章小结 ............................................................................................... 40 结论 ...................................................................................................................... 41 参考文献 .............................................................................................................. 42 致谢 ...................................................................................................................... 44 附录1 开题报告 ................................................................................................. 45 附录2 文献综述 ................................................................................................. 49 附录3 中期报告 ................................................................................................. 52 附录4 中文译文 ................................................................................................. 63 附录5 外文原文 ................................................................................................. 68
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