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基于自适应二阶终端滑模的SRM直接转矩控制

刘勇智 鄯成龙 林博闻 宋金龙

刘勇智, 鄯成龙, 林博闻, 等 . 基于自适应二阶终端滑模的SRM直接转矩控制[J]. 北京航空航天大学学报, 2018, 44(10): 2043-2051. doi: 10.13700/j.bh.1001-5965.2017.0781
引用本文: 刘勇智, 鄯成龙, 林博闻, 等 . 基于自适应二阶终端滑模的SRM直接转矩控制[J]. 北京航空航天大学学报, 2018, 44(10): 2043-2051. doi: 10.13700/j.bh.1001-5965.2017.0781
LIU Yongzhi, SHAN Chenglong, LIN Bowen, et al. Direct torque control of switched reluctance motor based on adaptive second-order terminal sliding mode[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(10): 2043-2051. doi: 10.13700/j.bh.1001-5965.2017.0781(in Chinese)
Citation: LIU Yongzhi, SHAN Chenglong, LIN Bowen, et al. Direct torque control of switched reluctance motor based on adaptive second-order terminal sliding mode[J]. Journal of Beijing University of Aeronautics and Astronautics, 2018, 44(10): 2043-2051. doi: 10.13700/j.bh.1001-5965.2017.0781(in Chinese)

基于自适应二阶终端滑模的SRM直接转矩控制

doi: 10.13700/j.bh.1001-5965.2017.0781
基金项目: 

国家自然科学基金 61304120

详细信息
    作者简介:

    刘勇智  男, 博士, 教授, 博士生导师。主要研究方向:航空电气工程

    鄯成龙  男, 硕士研究生。主要研究方向:开关磁阻电机直接转矩控制系统

    通讯作者:

    刘勇智, E-mail:kathrynkent@126.com

  • 中图分类号: V242.44

Direct torque control of switched reluctance motor based on adaptive second-order terminal sliding mode

Funds: 

National Natural Science Foundation of China 61304120

More Information
  • 摘要:

    传统的直接转矩控制(DTC)可以在一定程度上减小开关磁阻电机(SRM)的转矩脉动,但是在换相区的转矩脉动抑制效果较差,并且传统的PI控制存在超调量大、鲁棒性差、抗负载扰动能力有限的缺点。因此,设计了基于负载转矩变化率自适应估计的二阶终端滑模转速控制器,在有限时间内使得系统状态迅速收敛到平衡点,实现无需已知扰动上界快速输出给定转矩。此外,对传统的扇区规则进行改进以优化电压矢量的选取,减少由于换相产生的转矩脉动。仿真和实验结果表明:改进后的DTC系统拥有良好的调速控制性能,抗干扰能力强,鲁棒性好,能进一步减少转矩脉动。

     

  • 图 1  SRM-DTC系统框图

    Figure 1.  Block diagram of SRM-DTC system

    图 2  相绕组功率管开关状态设定

    Figure 2.  Switch state setting of phase winding power tube

    图 3  传统的电压矢量选取方式

    Figure 3.  Traditional voltage vector selection method

    图 4  扇区细分方法

    Figure 4.  Sector segmentation method

    图 5  矩角特性和磁链特性

    Figure 5.  Torque-angle and flux-linkage characteristics

    图 6  3种控制方式转速和输出转矩曲线对比

    Figure 6.  Comparison of curves of speed and output torque of three control modes

    图 7  磁链轨迹

    Figure 7.  Flux-linkage track

    图 8  输出转矩波形

    Figure 8.  Output torque waveform

    图 9  转速为500 r/min时转速和输出转矩波形

    Figure 9.  Speed and output torque waveform at 500 r/min

    图 10  转速为1 500 r/min时转速和输出转矩波形

    Figure 10.  Speed and output torque waveform at 1 500 r/min

    表  1  电压矢量选取规则

    Table  1.   Voltage vector selection principle

    转矩和磁链变化 电压矢量
    T↑, ψ VN+1
    T↑, ψ VN+2
    T↓, ψ VN-1
    T↓, ψ VN-2
    下载: 导出CSV

    表  2  合成磁链幅值变化

    Table  2.   Change of synthetic flux-linkage amplitude

    θ/(°) θ1/(°) θ2/(°) V2后磁链幅值变化量/Wb V3后磁链幅值变化量/Wb
    0 90 150 0 -0.866x
    10 80 140 0.174x -0.766x
    20 70 130 0.342x -0.643x
    30 60 120 0.5x -0.5x
    40 50 110 0.643x -0.342x
    50 40 100 0.766x -0.174x
    60 30 90 0.866x 0
    注:θ1为电压矢量V2与磁链的夹角; θ2为电压矢量V3与磁链的夹角。
    下载: 导出CSV

    表  3  基于扇区细分方法优化电压矢量选取

    Table  3.   Voltage vector selection optimization based on sector segmentation method

    变化需求 区域N(N=1, 2, …, 6)
    NA NB NC
    ψ T
    T
    VN
    VN-1
    VN+1
    VN-1
    VN+1
    VN
    ψ T
    T
    VN+2
    VN+3
    VN+2
    VN+4
    VN+3
    VN+4
    下载: 导出CSV
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出版历程
  • 收稿日期:  2017-12-19
  • 录用日期:  2018-03-23
  • 刊出日期:  2018-10-20

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