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Stability Study of a Permanent Magnet Synchronous Motor Sensorless Vector Control System Based on Extended EMF Model

机译:基于扩展EMF模型的永磁同步电动机无传感器矢量控制系统的稳定性研究

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A simplified sensorless vector control system is derived by using the extended electromotive force (EMF) model. By using a steady-state voltage equation approximately, the rotor speed and position are computed from the output voltage of a γ-axis proportional plus integral (PI) current controller with decoupling control. A linear model is proposed for the small perturbation around a steady-state operating point. The system stability is discussed in terms of the trajectories of the system matrix eigenvalues for speed estimation and control parameters. The comparison between the simulation results obtained using a nonlinear model and the experimental results validates the derived system.
机译:通过使用扩展电动势(EMF)模型,得出了简化的无传感器矢量控制系统。通过近似使用稳态电压方程,可通过带有解耦控制的γ轴比例加积分(PI)电流控制器的输出电压来计算转子速度和位置。针对稳态工作点周围的微小扰动,提出了线性模型。根据用于速度估计和控制参数的系统矩阵特征值的轨迹来讨论系统稳定性。使用非线性模型获得的仿真结果与实验结果之间的比较验证了派生的系统。

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