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Model Reference Adaptive System Based Adaptive Speed Estimation for Sensorless Vector Control with Initial Rotor Position Estimation for Interior Permanent Magnet Synchronous Motor Drive

机译:基于模型参考自适应系统的无传感器矢量控制的自适应速度估计,带有内部永磁同步电动机驱动器的初始转子位置估计

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摘要

The rotor position/speed sensor used to control the permanent magnet synchronous motor drive has increased size and cost, decreased reliability, and a need for shaft extension and mounting arrangements. Sensorless control is currently adopted in many industrial applications for reasons of robustness, cost, cabling, and reliability. In order to achieve correct operation from zero speed startup of a sensorless salient-pole permanent-magnet synchronous motor (the interior permanent magnet synchronous motor), the initial rotor position of the motor is required. A model reference adaptive system technique has been used for speed estimation in sensorless speed control of the interior permanent magnet synchronous motor with space vector pulse width modulation. This article presents a new approach to improved initial rotor position detection of an interior permanent magnet synchronous motor. The method uses a suitable sequence of short and long time voltage pulses applied to the stator coil at standstill. Short time voltage pulses are applied to the motor terminals to detect the initial rotor position. Long time voltage pulses are used for detection of the magnet polarity based on the effect of saturation. The measurement of the current peaks values gives information about the initial rotor position. Simulation and experimental results are presented and show the validity of the proposed method, which is capable of reliable initial rotor position detection, including the polarity of the magnet at standstill. The error initial rotor position detection is less than 5 mechanical degrees. Experimental results are presented for an interior permanent magnet synchronous motor obtained on a fixed-point digital signal processor based control system. Experimental results show that the modeled reference adaptive system technique speed estimation provides high-performance sensorless control and initial rotor position estimation algorithms of the interior permanent magnet synchronous motor drive.
机译:用于控制永磁同步电动机驱动器的转子位置/速度传感器具有增大的尺寸和成本,降低的可靠性以及对轴延伸和安装布置的需求。由于坚固性,成本,布线和可靠性的原因,目前在许多工业应用中都采用了无传感器控制。为了实现无传感器凸极永磁同步电动机(内部永磁同步电动机)从零速启动开始的正确操作,需要电动机的初始转子位置。模型参考自适应系统技术已用于带有空间矢量脉冲宽度调制的内部永磁同步电动机的无传感器速度控制中的速度估计。本文提出了一种改进内部永磁同步电动机初始转子位置检测的新方法。该方法使用静止状态下施加到定子线圈的短时和长时电压脉冲的适当顺序。短时电压脉冲施加到电机端子上,以检测转子的初始位置。基于饱和的影响,长时间的电压脉冲用于检测磁体的极性。电流峰值的测量给出了有关初始转子位置的信息。仿真和实验结果表明,该方法的有效性,该方法能够可靠地检测初始转子位置,包括静止状态下的磁体极性。错误的初始转子位置检测小于5机械度。给出了在基于定点数字信号处理器的控制系统上获得的内部永磁同步电动机的实验结果。实验结果表明,建模参考自适应系统技术速度估算可为内部永磁同步电动机驱动器提供高性能的无传感器控制和初始转子位置估算算法。

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