吉林大学学报(工学版) ›› 2022, Vol. 52 ›› Issue (7): 1534-1540.doi: 10.13229/j.cnki.jdxbgxb20210056

• 车辆工程·机械工程 • 上一篇    

基于观测器的逆变器特性自学习与补偿控制

李麟(),李君,庞博,曲大为,袁新枚()   

  1. 吉林大学 汽车仿真与控制国家重点实验室,长春 130022
  • 收稿日期:2021-01-19 出版日期:2022-07-01 发布日期:2022-08-08
  • 通讯作者: 袁新枚 E-mail:ll_jlu@163.com;yuan@jlu.edu.cn
  • 作者简介:李麟(1988-),男,博士研究生. 研究方向:能源多元化与新型动力总成. E-mail:ll_jlu@163.com
  • 基金资助:
    国家重点研发计划项目(2017YFB0103203)

Observer-based inverter characteristic self-learning and compensation control

Lin LI(),Jun LI,Bo PANG,Da-wei QU,Xin-mei YUAN()   

  1. State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China
  • Received:2021-01-19 Online:2022-07-01 Published:2022-08-08
  • Contact: Xin-mei YUAN E-mail:ll_jlu@163.com;yuan@jlu.edu.cn

摘要:

针对交流电机的控制过程中,逆变器的干扰电压存在复杂的非线性特性,直接补偿逆变器互锁时间难以实现精确的电压输出控制,故一般需要对逆变器的干扰特征进行离线标定的缺点,应用了一种利用观测器自学习逆变器干扰特性并进行补偿的方法,无需离线标定,可以很好地获取逆变器的干扰特性,同时实现高性能的逆变器干扰补偿控制。通过将不同补偿函数在一台1 kW永磁同步电机上进行实验研究,验证了本文方法对逆变器干扰估计和补偿的有效性和准确性。

关键词: 电力电子与电力传动, 永磁同步电机, 逆变器干扰, 自学习, 观测器

Abstract:

In the control of AC motors, the inverter output voltage is difficult to be accurately controlled due to the inverter disturbance, which affects the output torque and efficiency. The inverter disturbance has complex nonlinear characteristics, so it is difficult to be well compensated by simply using the inverter interlock time. Consequently, offline inverter disturbance calibration is required. In this paper, an observer-based inverter disturbance self-learning and compensation method is implemented. Inverter disturbance characteristics can be accurately obtained without offline calibration. At the same time, high-performance inverter disturbance compensation is realized. By implementing proposed compensation methods to a 1 kW prototype permanent magnet synchronous motor, the performance of the inverter disturbance self-learning and compensation are both verified.

Key words: power electronics and power drives, permanent magnet synchronous motor, inverter interference, self-learning, observer

中图分类号: 

  • TM341

图1

三相逆变器结构"

图2

单相逆变器等效电路"

图3

IGBT开关过程时序图"

图4

逆变器扰动电压实验结果"

图5

带开环逆变器干扰补偿的永磁同步电机控制系统框图"

图6

电流观测器结构图"

图7

带干扰观测器与开环逆变器干扰补偿的永磁同步电机控制系统框图"

表1

电机参数表"

参数类型参数值参数类型参数值
连接方式Y型连接d轴电感/mH2.4
母线电压/V100q轴电感/mH2.75
极对数4反电势系数/Wb0.1693
绕组电阻/Ω0.1额定转速/(r?min-12000

图8

自学习得到的逆变器干扰特性与离线标定数据"

图9

控制策略相电流波形分析"

图10

控制策略性能分析"

图11

逆变器干扰电压补偿实验结果"

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