微特电机 ›› 2019, Vol. 47 ›› Issue (1): 74-77.doi: 1004-7018-47-1-74

• 驱动控制 • 上一篇    下一篇

基于改进型滑模变结构的电动汽车用PMSM DTC研究

陈芬1,王敏2,刘海涛1,段小芳1   

  1. 1. 南通开放大学,南通 226000
    2. 河海大学,南京 211100
  • 收稿日期:2017-08-19 出版日期:2019-01-28 发布日期:2019-01-28
  • 作者简介:陈芬(1986—),女,硕士,助教,研究方向为电力系统变频控制。
  • 基金资助:
    中央高校基本科研业务项目(2012B05914);教育部海外名师项目(MS2012HHDX021)

DTC of PMSM in Electric Vehicle Based on Modified Variable Structure Sliding Mode

CHEN Fen1,WANG Min2,LIU Hai-tao1,DUAN Xiao-fang1   

  1. 1. Nantong Open University,Nantong 226000,China
    2. Hohai University,Nanjing 211100,China
  • Received:2017-08-19 Online:2019-01-28 Published:2019-01-28

摘要:

从滑模变结构的控制原理出发,设计一种基于组合趋近率的永磁同步电动机滑模速度调节器,同时采用积分分离式PID控制器来代替传统的PI控制器,能够显著提高系统的控制精度和转速的响应速度,实现逆变器开关频率的恒定,提高系统的动、静态性能。同时,结合电动汽车的实际运行情况,选取典型工况进行仿真分析,仿真结果表明该方法能够适用于电动汽车的频繁起停、起动转矩大等特性,能显著提升驾驶者和乘车人员的舒适度。

关键词: 滑模控制, 组合趋近律, 永磁同步电机, 直接转矩控制, 电动汽车

Abstract:

Starting from the principle of sliding mode variable structure control, a sliding mode speed regulator was designed which combined reaching rate based on the PI controller with integral separation PID controller to replace the traditional. The regulator can significantly improve the response speed of the control precision and speed of the system, realize the inverse transformer constant switching frequency, improve the system dynamic and static performance.At the same time, typical conditions were simulated combined with the actual operation of electric vehicles, the simulation results show that this method can be applied to electric vehicles frequent starting and stopping, or large starting torque, and can significantly increase the comfort of driver and passengers.

Key words: sliding mode control (SMC), combined reaching law, permanent magnet synchronous motor (PMSM), direct torque control (DTC), electric vehicle

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