摘要
针对传统的矢量控制方法存在参数易漂移、磁场定向不准的问题,提出了一种基于电机转子磁链位置角的磁场定向校正方法,实现异步电机精准磁场定向控制。具体实现方法为在原有的矢量控制模型下,加入前馈解耦,由解耦后的电机模型推算出转子磁链位置角用以补偿转子时间常数,使电机能够保证精准的磁场定向。仿真和实验结果表明:提出的基于转子磁链位置角的磁场定向校正算法能准确地辨识出转子时间常数,实现异步电机精准磁场定向控制,改善电机的控制性能。
Aiming at the problems of easy parameter drift and inaccurate magnetic field orientation in traditional vector control methods,a magnetic field orientation correction method based on the rotor flux position Angle of motor was proposed to achieve precise magnetic field orientation control of induction motor.The specific implementation method is to add feedforward decoupling to the original vector control model,and derive the rotor flux position angle from the decoupled motor model to compensate for the rotor time constant,thus ensuring accurate field orientation of the motor.Simulation and experimental results show that the proposed field orientation correction algorithm based on the rotor flux position angle can accurately identify the rotor time constant and achieve precise field orientation control for asynchronous motors,improving the control performance of the motor.
作者
廖承阳
姜风光
LIAO Chengyang;JIANG Fengguang(Huazhong University of Science and Technology,Wuhan 430074,China;Wuhan Zhengyuan Electric Co.,LTD.,Wuhan 430000,China)
出处
《微电机》
2023年第9期19-25,共7页
Micromotors
关键词
异步电机
矢量控制
参数漂移
磁场定向校正
转子磁链位置角
asynchronous motor
vector control
parameter drift
field orientation correction
rotor flux position angle
