Position and velocity sensorless control for synchronous reluctance motor at low speeds and under loaded conditions using high-frequency extended EMF observer and heterodyne detection
Position and velocity sensorless control for synchronous reluctance motor at low speeds and under loaded conditions using high-frequency extended EMF observer and heterodyne detection
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DOI：
10.1109/icelmach.2014.6960281
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发表时间：
2014-11
期刊：
影响因子：
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通讯作者：
Shota Kondo;Y. Sato;Taiga Goto;M. Tomita;M. Hasegawa;S. Doki;S. Kato
中科院分区：
文献类型：
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作者：
Shota Kondo;Y. Sato;Taiga Goto;M. Tomita;M. Hasegawa;S. Doki;S. Kato
近年来，同步磁阻电动机（SynRMs）由于其良好的特性，包括转子产生的热量少，轴的热膨胀有限，能够在高速下驱动，转矩脉动程度低以及没有退磁问题而受到研究。现在需要对synrm进行无传感器控制，并提出了几种方法。然而，这些方法在低速时有困难，因为估计转子位置所需的电压信号非常小。提出了一种利用高频扩展emf （EEMF）扰动观测器和外差检测相结合的转子位置估计方法。在本文中，实验表明，使用新方法可以在低速和负载条件下控制synrm，而不需要位置和速度传感器。
Recently, synchronous reluctance motors (SynRMs) have attracted study because of their favorable properties, including limited thermal expansion of the shaft due to low heat generation by the rotor, the ability to drive at high velocity, a low degree of torque ripple and an absence of demagnetization problems. Sensorless control of SynRMs is now desired, and several methods have been proposed. These methods, however, have difficulties at low speed when the voltage signal necessary to estimate rotor position is very small. This paper proposes a new rotor position estimation method using both a high-frequency extended e.m.f.(EEMF) disturbance observer and a heterodyne detection. In this paper, it is shown, experimentally, that it is possible to control the SynRMs at low speeds and under loaded conditions without the position and velocity sensor using the new proposed method.