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This paper proposes a sensorless speed control scheme based on a model reference adaptive control (MRAC) and it is applied to a Single-Phase Induction Motor. The rotor speed control algorithm is based on robust model reference adaptive controller (RMRAC). The speed estimation technique is obtained from a MRAS (Model Reference Adaptive System) algorithm, based on the motor reactive power calculation...
In this paper, a closed loop adaptive speed observer is proposed to improve the dynamic performance of a matrix converter (MC) fed stator flux oriented DTC induction motor drive. The speed observer uses estimated rotor fluxes to estimate the rotor speed. The advantages of using a full order Luenberger observer instead of a reduced order closed loop model with the proposed speed observer, for the estimation...
This paper propose an adaptive sliding mode observer(SMO) which adds an estimation function for the stator resistance to the conventional sliding mode observer. It is proposed for the robust sensorless control of permanent magnet synchronous motor(PMSM) with variable parameters. The low-pass filter and additional position compensation of the rotor are used to reduce the chattering problem commonly...
This paper presents system analysis, modeling and simulation of an electric vehicle with different sensorless control techniques. Indeed, sensorless control is considered to be a lower cost alternative than the position or speed encoder-based control of induction motors for an electric vehicle. Two popular sensorless control methods, namely, the Luenberger observer and the Kalman filter methods are...
In this paper, an adaptive flux observer is designed for a speed sensorless direct torque controlled induction motor drive in which the rotor resistance value is updating during operation and a new speed-adaptive law is given. By using robust control theory, the constant observer gain is obtained by solving two bilinear matrix inequalities. The stability of the flux observer is ensured in a sufficiently...
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