scholarly journals Dynamical Analysis of Fractional-order Permanent Magnet Synchronous Motor Based on Current Time-delayed Feedback

2020 ◽  
Vol 768 ◽  
pp. 042017
Author(s):  
Senkui Lu ◽  
Xingcheng Wang ◽  
Yanan Li
Keyword(s):  
Permanent Magnet ◽  
Fractional Order ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Delayed Feedback ◽  
Dynamical Analysis ◽  
Current Time ◽  
Time Delayed Feedback

Design of a fractional order adaptive controller for velocity control of a permanent magnet synchronous motor

2015 ◽  
Vol 34 (4) ◽  
pp. 1191-1212 ◽  
Author(s):  
Mohammad Tabatabaei
Keyword(s):  
Permanent Magnet ◽  
Fractional Order ◽  
Feedback Linearization ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Lyapunov Methods ◽  
Velocity Control ◽  
Adaptation Mechanism ◽  
Content Type ◽  
First Time

Purpose – The purpose of this paper is to present a two-loop approach for velocity control of a permanent magnet synchronous motor (PMSM) under mechanical uncertainties. Design/methodology/approach – The inner loop calculates the two-axis stator reference voltages through a feedback linearization method. The outer loop employs an RST control structure to compute the q-axis stator reference current. To increase the robustness of the proposed method, the RST controller parameters are adapted through a fractional order model reference adaptive system (FO-MRAS). The fractional order gradient and Lyapunov methods are utilized as adaptation mechanisms. Findings – The effect of the fractional order derivative in the load disturbance rejection, transient response speed and the robustness is verified through computer simulations. The simulation results show the effectiveness of the proposed method against the external torque and mechanical parameters uncertainties. Originality/value – The proposed FO-MRAS based on Lyapunov adaptation mechanism is proposed for the first time. Moreover, application of the FO-MRAS for velocity control of PMSM is presented for the first time.

scholarly journals Nonsingular Fast Terminal Sliding Mode Observer and Fractional-Order Software Phase-Locked Loop for Speed-Sensorless Control of Interior Permanent Magnet Synchronous Motor

2021 ◽  
Vol 25 (1) ◽  
pp. 83-89
Author(s):  
Kaihui Zhao ◽  
Ruirui Zhou ◽  
Jinhua She ◽  
Aojie Leng ◽  
Wangke Dai ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Fractional Order ◽  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
Phase Locked Loop ◽  
Synchronous Motor ◽  
Sliding Mode Observer ◽  
Terminal Sliding Mode ◽  
Fast Terminal Sliding Mode ◽  
Interior Permanent Magnet

In this paper, a novel method is presented to improve the speed-sensorless control performance of an interior permanent magnet synchronous motor using a nonsingular fast terminal sliding-mode observer and fractional-order software phase-locked loop. The interior permanent magnet synchronous motor system is first described. Next, a nonsingular fast terminal sliding mode observer is constructed to estimate the d-q-axis back electromotive force. The speed and position of the rotor are then accurately tracked using a fractional-order software phase-locked loop. The effectiveness and feasibility are verified through a simulation in MATLAB/Simulink. The results show an excellent performance despite a fluctuation in speed and torque ripple.

scholarly journals Fractional order PID sliding mode control for speed regulation of permanent magnet synchronous motor

2021 ◽  
Vol 9 (3A) ◽  
Author(s):  
Fardila Mohd Zaihidee ◽  
◽  
Saad Mekhilef ◽  
Marizan Mubin ◽  
◽  
...  
Keyword(s):  
Sliding Mode Control ◽  
Permanent Magnet ◽  
Fractional Order ◽  
Sliding Mode ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Sliding Surface ◽  
Speed Regulation ◽  
Speed Tracking ◽  
Fractional Order Pid

This paper proposed a fractional order PID sliding mode control (FOSMC-PID) for speed regulation of permanent magnet synchronous motor (PMSM). Fractional calculus has been incorporated in sliding mode controller (SMC) design to enhance chattering suppression ability. However, the design of fractional sliding surface is crucial to ensure that speed tracking accuracy is not jeopardized. The proposed controller is designed with a fractional order PID sliding surface, which balances the characteristics of sliding surface with PI or PD structure in terms of robustness and dynamic performance of the controller. By simulation, speed tracking is proven to be faster and more robust with the proposed controller compared to SMC with integer order. Both integration and derivative terms in the surface design outperform FOSMC-PI and FOSMC-PD in terms of disturbance rejection and chattering. Experimental validation proves the advantage of the proposed controller in terms of robustness.

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