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Implementation of a sensorless interior permanent magnet synchronous drive based on current deviations of pulse-width modulation switching

机译:基于脉宽调制开关电流偏差的无传感器内部永磁同步驱动的实现

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摘要

This study proposes a rotor position estimating method by detecting the stator currents under each pulse-width modulation switching state for an interior permanent magnet synchronous motor drive system. The proposed sensorless motor drive system can be applied in an air conditioner without injecting any high-frequency sinusoidal or cosine voltage signal. The operating speed range can be effectively extended because the maximum available voltage is increased when compared to the high-frequency sinusoidal or cosine voltage injection method. The detailed analysis is discussed here. A digital signal processor, TMS-320-F-2812, is used to execute the rotor position estimator and controller. Several experimental results are included to evaluate the theoretical analysis. The experimental results show that the proposed sensorless method can provide satisfactory performance for a closed-loop interior permanent magnet synchronous motor drive system applied in an air conditioner.
机译:这项研究提出了一种通过检测内部永磁同步电动机驱动系统在每个脉宽调制切换状态下的定子电流来估计转子位置的方法。所提出的无传感器电动机驱动系统可以应用在空调中,而无需注入任何高频正弦或余弦电压信号。由于与高频正弦或余弦电压注入方法相比,最大可用电压增加了,因此可以有效地扩展操作速度范围。详细的分析在这里讨论。数字信号处理器TMS-320-F-2812用于执行转子位置估计器和控制器。包括几个实验结果以评估理论分析。实验结果表明,所提出的无传感器方法可以为空调中的闭环内部永磁同步电动机驱动系统提供令人满意的性能。

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