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This paper introduces a new simple sensorless algorithm of estimating the permanent magnet synchronous motor (PMSM) speed and position. The proposed estimation method is implemented using a stator flux/current and a modified back electromotive force (EMF) observer connected in cascade. The flux/current observer based on sliding mode techniques ensures stator currents convergence while the modified...
In this paper a simple sensorless algorithm of estimating the permanent magnet synchronous motor (PMSM) speed and position is presented. The proposed approach introduces a new PMSM mathematical model considered in an estimated gamma-delta reference frame instead of stationary alpha-beta reference frame. A state observer has been implemented by the fundamental excitation method based on sliding mode...
A new sensorless method of estimating the permanent magnet synchronous motor speed is presented. The method is based on sliding mode observer theory using Lyapunov stability criteria. The observation algorithm makes use of the machine model equations allowing the estimation of flux/current, stator resistance, rotor angle and rotor speed from the motor terminal measurement of currents and voltages...
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