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首页> 外文期刊>Electric Power Applications, IET >Rotor position estimation scheme with harmonic ripple attenuation for sensorless controlled permanent magnet synchronous motors
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Rotor position estimation scheme with harmonic ripple attenuation for sensorless controlled permanent magnet synchronous motors

机译：无传感器控制永磁同步电动机的具有谐波纹波衰减的转子位置估计方案

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摘要

To achieve high-performance sensorless control of permanent magnet motors with non-sinusoidal back electromotive force (EMF), an improved sliding mode observer (SMO) adopting synchronous rotating low-pass filter (SRLPF) is proposed. The SRLPF is utilised to reduce the back-EMF harmonics and extract the fundamental component. Different from the traditional rotor position observer, the proposed observer can calculate the rotor position with the back-EMF fundamental component. Owing to the decrease in the influence of non-sinusoidal back-EMF, the estimated rotor position harmonic ripple error can be greatly reduced. Then, the high estimated accuracy and excellent sensorless control performance can be obtained. In addition, the proposed strategy is easy for implementation. With the comparison between the traditional SMO and the proposed observer, the experiments of the system steady-state error, the speed tracking performance, and the disturbance rejection ability in the speed range from 60 r/min to the rated speed 750 r/min are presented. The validity of the proposed method is conformed.
机译：为了实现具有非正弦反电动势（EMF）的永磁电动机的高性能无传感器控制，提出了一种采用同步旋转低通滤波器（SRLPF）的改进的滑模观测器（SMO）。 SRLPF用于减少反电动势谐波并提取基本成分。与传统的转子位置观测器不同，建议的观测器可以使用反电动势基本分量来计算转子位置。由于非正弦反电动势的影响减小，因此可以大大降低估计的转子位置谐波波动误差。然后，可以获得高的估计精度和优异的无传感器控制性能。另外，所提出的策略易于实施。通过比较传统SMO和拟议的观测器，在60 r / min至750 r / min的速度范围内进行了系统稳态误差，速度跟踪性能和抗干扰能力的实验。提出了。证明了所提方法的有效性。

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