Estimation of motor torque requires information of motor parameters and becomes crucial to the cases where phase inductance varies with the rotor position. Present paper proposes a simple instantaneous torque estimator for a permanent-magnet brushless dc (PM BLDC) motor drive. Proposed estimator requires information of phase currents from the current sensors and duty ratio applied to the individual phase legs of the VSI. Information of phase inductance is not required. Negligence of phase resistance reduces this estimator to a simplified one with considerable error. Applicability of this estimator even for the sinusoidal phase current supply makes it a general strategy for the estimation of instantaneous motor torque for a PM BLDC motor drive. For the validation of the estimator, torque from the Simulink model of PMSM motor with trapezoidal back-emf is considered as a reference.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Torque estimator for a permanent magnet brushless DC motor drive


    Contributors:


    Publication date :

    2015-08-01


    Size :

    143348 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




    Brushless permanent-magnet motor design

    Hanselman, Duane C. | TIBKAT | 1994



    Brushless permanent magnet and reluctance motor drives

    Miller, Timothy J. E. | TIBKAT | 1989


    The Optimization of Permanent Magnet Brushless Motor Drive System for Electric Vehicle

    Jiang, X. / Jiang, D. / Zhu, D. et al. | British Library Conference Proceedings | 1999