Title :
Robustness evaluation of SMO based speed-position estimation in BLDC motor
Author :
Girija, P.K. ; Prince, Anandarajah
Author_Institution :
Dept. of Electr. Eng., Rajiv Gandhi Inst. of Technol., Kottayam, India
Abstract :
A robust sensorless back-EMF detection method for brushless dc (BLDC) motor drive system is presented in this paper. This estimated back-EMF is used to deduce the rotor position and the angular velocity of the rotor. Sliding Mode Observer (SMO) which is low sensitive to parameter variations is proposed to estimate the phase-to-phase trapezoidal back-EMF in a BLDC motor by the measurement of stator currents and voltages. The paper focuses the robustness evaluation of the Sliding Mode Observer to the variation of motor parameters.
Keywords :
DC motor drives; brushless DC motors; observers; robust control; sensorless machine control; variable structure systems; BLDC motor; SMO; angular velocity; brushless DC motor drive system; robust sensorless back-EMF detection method; robustness evaluation; rotor position; sliding mode observer; speed-position estimation; AC motors; Brushless DC motors; Observers; Rotors; Brushless dc motor; non-sinusoidal back-EMF; sliding mode observer; two-phase conduction;
Conference_Titel :
Advances in Electrical Engineering (ICAEE), 2014 International Conference on
Conference_Location :
Vellore
DOI :
10.1109/ICAEE.2014.6838473
