微特电机 ›› 2022, Vol. 50 ›› Issue (12): 34-42.

• 驱动控制 • 上一篇    下一篇

基于三电平逆变器和模型预测的电机控制方法

姜泽超1, 朱蕴璞1, 孙乐2, 高鹏1   

  1. 1.南京理工大学 机械工程学院,南京 210014;
    2.南京理工大学 自动化学院,南京 210014
  • 收稿日期:2022-07-08 出版日期:2022-12-28 发布日期:2022-12-15
  • 作者简介:姜泽超(1977—)男,硕士研究生,研究方向为电机控制。朱蕴璞 (1964—)女,副教授,研究方向包括运动控制、电机驱动系统、测试计量技术。孙乐(1987—) 男,副教授,研究方向包括伺服系统永磁电机的设计和控制,电动汽车。高鹏(1998—) 男,硕士研究生,研究方向为电机控制。

Motor Control Method Based on Three-level Inverter and Model Prediction

JIANG Zechao1, ZHU Yunpu1, SUN Le2, GAO Peng1   

  1. 1. School of Mechanical Engineering, Nanjing University of Science and Technology,Nanjing 210014,China;
    2. School of Automation, Nanjing University of Science and Technology,Nanjing 210014, China
  • Received:2022-07-08 Online:2022-12-28 Published:2022-12-15

摘要: 提出一种基于NPC三电平逆变器驱动的摆臂结构伺服方法,以优化在大惯量随动系统中永磁同步电机伺服系统的控制性能。使用三电平逆变器驱动,同传统的两电平逆变器相比,减小了电流谐波。在速度环中加入模型预测控制(MPC)算法,来改善系统的动态性能。引入了扩展状态观测器来估计集中扰动,并在MPC速度控制器中添加了基于估计扰动的前馈补偿项以在强扰动的情况下保证控制稳定性。在由永磁同步电机构成的实验台上对该方案的控制效果进行了验证。

关键词: 伺服驱动, NPC三电平逆变器, 模型预测控制, 超大惯量负载, 扩展状态观测器

Abstract: A swing arm structure servo method based on NPC three-level inverter was proposed to optimize the control performance of permanent magnet synchronous motor servo system in large inertia servo system.The three-level inverter was used to drive, the current harmonic was reduced by comparing with traditional two-level inverter. Model predictive control (MPC) algorithm was added to the speed loop to improve the dynamic performance of the system. An extended state observer (ESO) was introduced to estimate the centralized disturbance, and a feedforward compensation term based on the estimated disturbance was added to the MPC speed controller to ensure the control stability in the case of strong disturbance. The control effect of the proposed scheme was verified on the experimental platform composed of permanent magnet synchronous motor.

Key words: servo drive, neutral point clamped(NPC) three-level inverter, model predictive control(MPC), large inertia load, extended state observer(ESO)

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