Sensorless capability of an interior permanent magnet synchronous machine with a short-circuited rotor winding
Sensorless capability of an interior permanent magnet synchronous machine with a short-circuited rotor winding
复制标题
转子绕组短路的内置式永磁同步电机的无传感器能力
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
I. Hahn
中科院分区：
文献类型：
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作者：
J. Graus;I. Hahn
基于信号注入方法的无传感器位置估计通常需要基于电阻或电感的各向异性。影响电机差动电感的一种方法是在转子表面使用短路绕组。本文将该方法应用于内置式永磁电机。为了研究转子短路绕组对提高IPM电机无速度传感器性能的适用性，提出了一种优化的转子概念，并用非线性电机模型进行了研究。为了验证这些发现，我们建造了这台机器并进行了测量。测量结果与仿真结果吻合较好，清楚地表明了转子绕组短路增加了测试信号的磁凸度，从而显著减小了估计误差。
Sensorless position estimation based on signal-injection methods always requires a resistance- or inductance-based anisotropy. One way to influence the differential inductances of an electrical machine is the use of a short-circuited electrical winding on the rotor surface. This method is applied to an interior permanent magnet (TPM) machine in this paper. In order to investigate the suitability of a short-circuited rotor winding to improve the sensorless capability of an IPM machine, an optimized rotor concept is derived and investigated by a nonlinear machine model. To verify these findings, the presented machine was built and measured. The measurement results are in good agreement with the simulations and show clearly how a short-circuited rotor winding increases the magnetic saliency for the test signal and in consequence, leads to a significant reduction of the estimation error.