SPEED SENSORLESS CONTROL OF AN IPMSM DRIVE BASED ON ACTIVE FLUX CONCEPT | ||||
| JES. Journal of Engineering Sciences | ||||
| Article 13, Volume 39, No 1, January and February 2011, Page 179-194 PDF (340.24 K) | ||||
| Document Type: Research Paper | ||||
| DOI: 10.21608/jesaun.2011.119711 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| A. A. Hassan; A. M. El-Sawy; Y. S. Mohamed; E. G. Shehata | ||||
| Electrical Eng. Dept., Faculty of Engineering, El -Minia Uni., Egypt | ||||
| Abstract | ||||
| This paper investigates a novel direct torque control (DTC) for a sensorless interior permanent magnet synchronous motor (PMSM) based on a sliding mode technique (SMC). The speed and position of the interior PMSM are estimated online based on active flux concept. To overcome the large ripple content associated with the direct torque, a torque/flux sliding mode controller has been employed. Two integral surface functions are used to construct the sliding mode controller (SMC). The command voltage is estimated from the torque and flux errors based on the two switching functions. The idea of total sliding mode is used to eliminate the problem of reaching phase stability. The space vector modulation (SVM) is combined with the sliding mode controller to ensure minimum torque and flux ripples and provides high resolution voltage control. The proposed scheme has the advantages of simple implementation, and does not require an external signal injection. In addition, it combines the merits of the direct torque control, sliding mode controller, and space vector modulation beside the sensorless control. Simulation works are carried out to demonstrate the ability of the proposed scheme at different operating conditions. The results confirm the high performance of the proposed scheme at standstill, low and high speeds including load disturbances and parameters variation. | ||||
| Keywords | ||||
| Active flux concept; Speed sensorless control; Direct torque control; Sliding mode control; Space vector modulation | ||||
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