Influence of rotor saturation on the differential inductances of PM-synchronous machines with concentrated winding
Influence of rotor saturation on the differential inductances of PM-synchronous machines with concentrated winding
复制标题
转子饱和对集中绕组永磁同步电机差动电感的影响
DOI：
10.1109/epe.2013.6631840
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
I. Hahn
中科院分区：
文献类型：
--
作者：
J. Graus;Sven Luthardt;I. Hahn
对于永磁同步电机在极低速和静止状态下的无传感器位置检测，通常采用信号注入方法。作为先决条件，这些所谓的显著性跟踪方法需要机器的不同磁各向异性，这是位置和负载相关的，因此在操作过程中变化。因此，无传感器操作的性能很大程度上取决于机器的设计。为了研究转子饱和的影响，本文提出了一种基于磁等效电路的电机模型。然后用这个模型来分析具有集中绕组的机器的差分电感。然后通过对机器在几个工作点的主要磁通路径的分析来解释这些结果。
For sensorless position detection of permanent magnet synchronous machines at very low speed and standstill, signal injection methods are commonly used. As a prerequisite these so called saliency-tracking methods require a differential magnetic anisotropy of the machine, which is both position and load dependent and thus varying during operation. So the performance of sensorless operation strongly depends on the machine design. To investigate the influence of the rotor saturation a machine model based on a magnetic equivalent circuit (MEC) is presented in this document. This model is then used to analyze the differential inductances of a machine with concentrated windings. The results are then explained by an analysis of the main flux paths of the machine in several operating points.