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Sensorless Speed Control of PMSM using Stator Flux Estimation and PLL  

Kim, Min Ho (Electronics Engineering of CheongJu University)
Yang, Oh (Semiconductor Engineering of CheongJu University)
Publication Information
Journal of the Semiconductor & Display Technology / v.14, no.2, 2015 , pp. 35-40 More about this Journal
Abstract
This paper presents the sensorless position control of the Permanent Magnet Synchronous Motor (PMSM) using stator flux estimation and Phase Lock Loop (PLL). The field current and the torque current are required in order to perform the vector control of the PMSM. At this time, it is necessary for the torque to know the exact position of the magnetic flux generated by the permanent magnet, because the torque must be applied torque current in the direction orthogonal to the permanent magnet. In general the speed of the PMSM is controlled by using a magnetic position sensor. However, this paper, we estimates the stator flux by using the PLL method without the magnetic position sensor. This method is simple and easy, in addition it has the advantage of a stabile estimation of the rotor. Finally the proposed algorithm was confirmed by experimental results and showed the good performance.
Keywords
PMSM; Sensorless; PLL; Speed control; flux estimation;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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