Sensorless control of the trapezoidal BLDC Motors using Sliding Mode Observer for phase-to-phase back-EMF
| Authors: | Fakham Hicham, Laboratoire de Robotique de Versailles, France
Reama Abdellatif, Design and Control of Industrial Systems Laboratory, ESSIE, France
Djemai Mohamed, Equipe Commande des Systèmes, ENSEA, France |
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| Topic: | 2.1 Control Design |
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| Session: | Control Design II |
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| Keywords: | Permanent magnet, Trapezoidal Brushless DC Motor, Sliding Mode Observer, Sensorless control |
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Abstract
This paper presents a method for speed, position and phase-to-phase back-EMF estimation in trapezoidal Brushless DC motors (BLDCM) through application of the sliding mode technique. The electrical dynamic equations of BLDCM are modified to obtain the sliding mode observer model where the phase-to-phase back-EMF, position and speed are estimated using measured stator currents and voltages. A theoretical study is developed and the results obtained by simulation are presented to show the effectiveness of the method.
