Robust and smooth current control is very important for permanent magnet synchronous motor (PMSM) drives. However, aperiodic and periodic disturbances generally exist in the PMSM system, which reduces the system stability and leads to current harmonics. Conventional active disturbance rejection control (CADRC) can only converge in an infinite domain and cannot effectively deal with current harmonics. Thus, a modified active disturbance rejection control (MADRC) with a quasi-resonant fixed-time-convergent extended state observer (QRFESO) is proposed for PMSM current regulation in this article. First, the QRFESO is designed based on a quasi-resonant technique and fixed-time control theory to suppress the current disturbances. Compared with the conventional extended state observer (CESO) of CADRC, the QRFESO has faster convergence speed and stronger robustness and can effectively estimate current harmonics. Then, the fixed-time convergence property of the QRFESO is proven by constructing a homogeneous Lyapunov function, and the performance analysis of the proposed method is given utilizing the frequency-sweep scheme. Finally, the feasibility and effectiveness of the proposed method are verified on a PMSM experimental platform.


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    Title :

    Modified ADRC Based on Quasi-Resonant Fixed-Time-Convergent Extended State Observer for PMSM Current Regulation


    Contributors:


    Publication date :

    2025-02-01


    Size :

    9691387 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English