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首页> 外文期刊>International journal of industrial electronics and drives >Stator resistance estimator for direct torque control of permanent magnet synchronous motor drive systems using multi-resolution analysis wavelet
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Stator resistance estimator for direct torque control of permanent magnet synchronous motor drive systems using multi-resolution analysis wavelet

机译：使用多分辨率分析小波的永磁同步电动机驱动系统直接转矩控制的定子电阻估计器

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摘要

This paper presents an innovative technique for stator resistance estimation of direct torque control permanent magnet synchronous motor based on multi-resolution analysis wavelet PI controller. The online stator resistance estimation employed adjusts precisely the stator resistance value relatively to the evolution of the stator current estimation error gradient to avoid the drive instability and ensure the tracking of the actual value of the stator resistance. The multi-resolution wavelet PI controller implemented for the three level wavelet decomposition is computationally far simpler as compared to the multi-resolution technique with separate computations for high and low pass filtering at each level of decomposition. Also it is prominent by less number of tuning constants and less tuning effort as compared to a standard multi-resolution wavelet controller. The simulation results show that the proposed method can reduce the torque ripple and current ripple, superior to track the actual value of the stator resistance for different operating conditions.
机译：本文提出了一种基于多分辨率分析小波PI控制器的直接转矩控制永磁同步电动机定子电阻估计的创新技术。在线定子电阻估算可相对于定子电流估算误差梯度的变化精确调整定子电阻值，以避免驱动不稳定并确保跟踪定子电阻的实际值。与多分辨率技术相比，为三级小波分解实现的多分辨率小波PI控制器在计算上要简单得多，多分辨率技术对每个分解级别的高通和低通滤波分别进行计算。与标准的多分辨率小波控制器相比，它还以较少的调整常数和较少的调整工作而著称。仿真结果表明，该方法可以减小转矩脉动和电流脉动，优于跟踪不同工况下定子电阻的实际值。

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