Standstill Parameter Identification of Permanent Magnet Synchronous Motor and Parameter Auto-tuning Method of Current Loop Controller [永磁同步电机静止参数辨识及电流环控制器自动参数整定]

作者：Meng L.; Zhang H.; Fan T.

来源：Acta Armamentarii, 2021, 42(10): 2114-2122.

DOI：10.3969/j.issn.1000-1093.2021.10.007

• Current loop controller
• Parameter auto-tuning
• Permanent magnet synchronous motor
• Standstill parameter identification

In the digital control system of permanent magnet synchronous motor (PMSM), the parameter setting of current loop controller is an important factor affecting the current loop width and system control performance. An auto-tuning method based on standstill parameter identification is proposed to optimize the design process of control parameters, so that the control system is suitable for different motor platforms. In a standstill condition of PMSM, the stator resistance is identified by two-point voltammetry to eliminate the influence of dead band on stator resistance identification in pulse width modulation, the stator windings are excited by high frequency injection method, and the inductance values of quadrature and direct axis are obtained by using discrete Fourier transform. The method of parameter auto-tuning of current loop controller is analyzed and derived, and a current loop controller is designed according to the identified motor parameters. The proposed method was tested on two PMSM experiment platforms. The experimental results show that the proposed control method can make the PMSM have good dynamic and static performance.The validity of the method for standstill parameter identification of PMSM and parameter auto-tuning of current loop controller is proven through experiment.

• 单位
  中国科学院大学