The direct back-electromotive-force (EMF) detection method previously described in a sensorless brushless dc (BLDC) motor-drive system (Proc. IEEE APEC, 2002, pp. 33-38) synchronously samples the motor back EMF during the pulsewidth-modulation (PWM) off time without the need to sense or reconstruct the motor neutral. Since this direct back-EMF-sensing scheme requires a minimum PWM off time to sample the back-EMF signal, the duty cycle is limited to something less than 100%. In this paper, an improved direct back-EMF detection scheme that samples the motor back EMF synchronously during either the PWM on time or the PWM off time is proposed to overcome the problem. In this paper, some techniques for automotive applications, such as motor-rotation detection, and current sensing are proposed as well. Experimental results are presented.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    An improved microcontroller-based sensorless brushless DC (BLDC) motor drive for automotive applications


    Contributors:

    Published in:

    Publication date :

    2006


    Size :

    6 Seiten, 11 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    A novel microcontroller-based sensorless brushless DC (BLDC) motor drive for automotive fuel pumps

    Shao, Jianwen / Nolan, D. / Teissier, M. et al. | Tema Archive | 2003


    A novel sensorless brushless DC (BLDC) motor drive for automotive fuel pumps

    Jianwen Shao, / Nolan, D. / Teissier, M. et al. | IEEE | 2002


    Sensorless PM brushless motor drive for electric vehicles

    Gati, A. / Durbak, N. / Gair, S. et al. | British Library Conference Proceedings | 1998



    BLDC motor and drive low frequency conducted RFI simulation for automotive applications

    Makaran,J.E. / LoVetri,J. / Siemens VDO Automotive,Wuerzburg,DE et al. | Automotive engineering | 2003