Sensorless Rotor Position Estimation in Synchronous Reluctance Motors Exploiting a Flux Deviation Approach
Sensorless Rotor Position Estimation in Synchronous Reluctance Motors Exploiting a Flux Deviation Approach
复制标题
利用磁通偏差方法估计同步磁阻电机中的无传感器转子位置
DOI：
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发表时间：
2007
影响因子：
4.4
通讯作者：
D. Triolo
中科院分区：
文献类型：
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作者：
A. Consoli;G. Scarcella;G. Scelba;A. Testa;D. Triolo
本文利用同步磁阻电机的自然显著性，通过在定子电压基准上增加一个小的高频正弦电压来估计转子的位置。由于转子的显著性，产生一个与外加信号正交的定子电压分量，其幅值取决于d轴与注入信号方向之间的相位差。通过调整载波电压的方向，使产生的正交电压的幅值最小，可以实现鲁棒的转子位置跟踪。提出的技术允许零速度操作，不需要额外的电压或电流传感器，并且可以很容易地纠正电枢反应的影响。实验结果证实了所提无传感器技术的有效性。
In this paper, the rotor position of a synchronous reluctance motor is estimated exploiting the natural saliency of the machine through an addition of a small high-frequency sinusoidal voltage to the stator voltage reference. Due to rotor saliency, a stator voltage component is generated orthogonal to the added signal, whose amplitude depends on the phase displacement between the d-axis and the direction of the injected signal. A robust rotor position tracking can be accomplished by adjusting the direction of the carrier voltage in order to minimize the amplitude of the generated orthogonal voltage. The proposed technique allows zero-speed operation, does not require additional voltage or current sensors, and can easily correct the influence of the armature reaction. Experimental results confirm the validity of the proposed sensorless technique.