期刊名称：International Journal on Electrical Engineering and Informatics
印刷版ISSN：2085-6830
出版年度：2018
卷号：10
期号：3
页码：421-432
DOI：10.15676/ijeei.2018.10.3.1
出版社：School of Electrical Engineering and Informatics
摘要：The capability of new 9-slot 8-pole permanent magnet BLDC motor to start withoutposition sensor is investigated in this paper. The permanent magnet rotor influences the statorwindings inductance as the rotor position changes. It leads to variation of motor current.Sensorless control of BLDC motor usually uses back EMF method, but this method cannotbe used from standstill, since there is no back EMF. To start this motor smoothly fromstandstill, the rotor position can be estimated using inductance variation method by injectinghigh frequency low current to the stator windings. The new 9-slot 8-pole PM BLDC motorhas the advantage of its asymmetrical windings. It generates unique current responses wheninjected by sinusoidal high frequency current on different rotor positions. The currentresponses then can be separated by fuzzy logic algorithm to determine the rotor position. Theexperimental results of the estimated rotor position sector with the experimental system areshown in this paper. From these results, the sensorless starting using inductance variationmethod is applicable to the 9-slot 8-pole motor.
