PM brushless DC motor provides an upper edge over other motors like induction & synchronous motors in terms of its high torque to weight ratio and simple structure and thus taken into account for a wide range of applications. For the control and operation of PMBLDCM, both sensorbased and sensorless techniques are used. Sensor-based techniques involve hall sensors, encoders, etc. to detect the rotor’s position, which generally results in increased cost and reduced reliability due to the temperature constraints of these sensors. In this paper, a new BEMF technique is proposed for sensorless control of the PMBLDC motor. As we know that the BEMF waveform of each phase is equally distributed in positive and negative halves and in this technique, the positive polarity of the BEMF is allocated to generate switching pulses for the commutation of upper hand switches (Sl, S3, S5) of the inverter and negative polarity BEMF to generate switching pulses for lower hand switches (S2, S4, S6). By using this technique, 1200 mode operation of the PMBLDC motor is achieved. The proposed scheme is simulated in MATLABSimulink software environment and the obtained results are presented to prove the effectiveness of the proposed technique.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A New BEMF Technique for the Sensorless Control of PMBLDC Motor Drive




    Publication date :

    2021-01-21


    Size :

    323549 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Iron-Loss Modeling With Sensorless Predictive Control of PMBLDC Motor Drive for Electric Vehicle Application

    Kumar, Prashant / Bhaskar, Devara Vijaya / Muduli, Utkal Ranjan et al. | IEEE | 2021

    Free access


    Sensorless BEMF measurement in current-controlled brushless motors

    STOEGER CHRISTIAN | European Patent Office | 2016

    Free access

    Sensorless BEMF measurement in current-controlled brushless motors

    STOEGER CHRISTIAN | European Patent Office | 2015

    Free access

    An optimized I-F startup method for BEMF-based sensorless control of SPMSM

    Wang, Minghui / Xu, Yongxiang / Zou, Jibin et al. | IEEE | 2017