Influence of Rotor Geometry of an IPM Motor on Sensorless Control Feasibility
Influence of Rotor Geometry of an IPM Motor on Sensorless Control Feasibility
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IPM 电机转子几何形状对无传感器控制可行性的影响
DOI：
10.1109/tia.2006.887317
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发表时间：
2005
影响因子：
4.4
通讯作者：
S. Bolognani
中科院分区：
文献类型：
--
作者：
Nicola Bianchi;S. Bolognani
基于高频定子电压叠加的无传感器控制技术是同步内嵌式永磁电机转子位置检测的常用方法。这种技术是有效的在零和低电机速度，其中反电动势是零或极低。然后，转子位置检测的精度严格依赖于转子的显著性，即IPM转子的几何形状。本文旨在确定一些IPM转子设计准则，以改进无传感器转子位置检测。由于设计必须在不同的工作条件下有效，因此必须考虑饱和和交叉耦合效应。结果表明，即使在较重的工作条件下，通过合理设计IPM电机的几何形状，也可以提高无传感器转子位置检测的有效性
The sensorless control technique based on the superimposition of a high-frequency stator voltage is commonly used to detect the rotor position of a synchronous interior-permanent-magnet (IPM) motor. This technique is effective at zero and low motor speed, where back electromotive force is null or extremely low. Then, the accuracy of the rotor-position detection depends strictly on the rotor saliency, that is, on the geometry of the IPM rotor. This paper aims to determine some IPM rotor-design criteria so as to improve the sensorless rotor-position detection. Since the design has to be effective in different operating conditions, both saturation and cross-coupling effects have to be taken into account. It is found that the effectiveness of the sensorless rotor-position detection can be improved by means of a proper design of the IPM motor geometry even under heavy operating conditions