scholarly journals Flux Sliding-mode Observer Design for Sensorless Control of Dual Three-phase Interior Permanent Magnet Synchronous Motor

2014 ◽  
Vol 9 (5) ◽  
pp. 1614-1622 ◽  
Author(s):  
Jian-Qing Shen ◽  
Lei Yuan ◽  
Ming-Liang Chen ◽  
Zhen Xie
Keyword(s):  
Permanent Magnet ◽  
Sliding Mode ◽  
Sensorless Control ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Sliding Mode Observer ◽  
Observer Design ◽  
Three Phase ◽  
Interior Permanent Magnet

scholarly journals Iterative sliding mode observer for sensorless control of five-phase permanent magnet synchronous motor

2017 ◽  
Vol 65 (6) ◽  
pp. 845-857
Author(s):  
J. Yang ◽  
M. Dou ◽  
D. Zhao
Keyword(s):  
Permanent Magnet ◽  
Sliding Mode ◽  
Sensorless Control ◽  
Permanent Magnet Synchronous Motor ◽  
Sliding Mode Observer ◽  
Motor Speed ◽  
Third Harmonic ◽  
Rotor Position ◽  
The Third ◽  
Three Phase

AbstractDue to the star connection of the windings, the impact of the third harmonic which does not exist in three-phase permanent magnet synchronous motor (PMSM) cannot be ignored in five-phase PMSM. So the conventional sensorless control methods for three-phase PMSM cannot be applied for five-phase PMSM directly. To achieve the sensorless control for five-phase PMSM, an iterative sliding mode observer (ISMO) is proposed with the consideration of the third harmonic impact. First, a sliding mode observer (SMO) is designed based on the fivephase PMSM model with the third harmonic to reduce the chattering and obtain the equivalent signal of the back electromotive force (EMF). Then, an adaptive back EMF observer is built to estimate the motor speed and rotor position, which eliminates the low-pass filter and phase compensation module and improves the estimation accuracy. Meanwhile, by iteratively using the SMO in one current sampling period to adjust the sliding mode gains, the sliding mode chattering and estimation errors of motor speed and rotor position are further reduced. Besides, the stability of the SMO and the adaptive back EMF observer are demonstrated in detail by Lyapunov stability criteria. Experiment results verify the effectiveness of the proposed observer for sensorless control of five-phase PMSM.

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.

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