This work discusses the stability issues of PI-based brushless DC motor (BLDCM) speed controllers under the presence of strong time delay in the controller loop. Understanding of the time delay effect is of paramount importance to increase performance, quality and productivity in important modern applications. Unfortunately, the time delay effect in the speed controller asymptotic stability has not been well studied in the existing literature. In this work, we present an algebraic technique to calculate the maximum time delay that can be accepted in the control loop of a BLDCM speed controller before the response becomes unstable. Initially, we derive an analytical model for the set point tracking (SPT) and the load disturbance rejection (LDR) responses taking into account the various sources of time delay. Using a recently proposed stability analysis methodology, we derive accurate stability conditions for the BLDCM speed controller. The results show that tuning the PI controller for very fast response causes the time delay to significantly affect the system stability. As an example, the asymptotic stability of the LDR of a sensored controller is analyzed. The method proposed here can be easily extended to analyze the stability of the SPT response and the stability of sensorless controllers such as the direct Back EMF.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Stability analysis of BLDC motor speed controllers under the presence of time delays in the control loop


    Beteiligte:
    Pimentel, Julio C. G. (Autor:in) / Gad, Emad (Autor:in) / Roy, Sebastien (Autor:in)


    Erscheinungsdatum :

    2013-12-01


    Format / Umfang :

    330820 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    BLDC BLDC IN-WHEEL MOTOR

    JANG JEONG CHEOL / KIM MIN HO / PARK PAN GUK | Europäisches Patentamt | 2024

    Freier Zugriff

    BLDC motor

    WU KAI / CHEN XIA / QIN RUI FENG | Europäisches Patentamt | 2018

    Freier Zugriff

    BLDC BLDC hub motor appatatus

    Europäisches Patentamt | 2017

    Freier Zugriff

    BLDC BLDC Motor Cruise Control Module Of Personal Mobility

    PARK JUNG YONG | Europäisches Patentamt | 2022

    Freier Zugriff

    BLDC BLDC motor Balance Lift System

    LEE SANG JIN / KIM HO YEOL | Europäisches Patentamt | 2021

    Freier Zugriff