Sensorless Control based on Sliding Mode Observer for PMSM drive

Bist, Abhishek; Jadhav, Sadhana V.

doi:10.1109/pedes49360.2020.9379492

Cited by 9 publications

(3 citation statements)

References 14 publications

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“…In order to improve the performance of SMOs, some scholars adopt continuous functions to replace symbolic functions to suppress chattering, such as Sigmoid(•) and fal(•), etc. [18,19]. However, this method also weakens the advantage of variable structure control.…”

Section: Chattering Caused By Injected Signals and Smo Deserves Furth...mentioning

confidence: 99%

“…Here, i A , i B , and i C can exhibit different effective values or amplitudes when the rotor is stationary at a certain angle. The rotor position is solved by a linear approximation method, and the result is shown in Equation (19), where I rms A , I rms B and I rms C represent the effective value of i A , i B , and i C , respectively. Usually, the acquisition of the effective value is more accurate than the amplitude, which reduces the identification error caused by the sampling process.…”

Section: The Rotor Position Identification Of Zero Speedmentioning

confidence: 99%

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An Improved Full-Speed Domain Sensorless Control Scheme for Permanent Magnet Synchronous Motor Based on Hybrid Position Observer and Disturbance Rejection Optimization

Huang,

Zhao,

Wang

et al. 2023

Electronics

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A sensorless control algorithm not only reduces the cost of a permanent magnet synchronous motor (PMSM) system, but also broadens its application scope. Expanding speed threshold and enhancing dynamic performance are crucial aspects. To optimize the adaptability of observers and the immunity of the controller in a full-speed domain, an improved sensorless control scheme for a PMSM based on a hybrid position observer and disturbance compensation is proposed. Firstly, the precise detection of the initial position and the scheme of starting with the load at any position are proposed based on high-frequency rotation injection, magnetic pole direction calibration and square-wave high-frequency injection (HFI). Secondly, a higher-order sliding mode observer (HSMO) is designed to improve high-speed observation performance by introducing an extended electromotive force (EEMF). Correspondingly, a speed controller called PI plus is developed utilizing a reverse control algorithm and the observed disturbance quantity, which further enhances the system’s disturbance rejection capability. Subsequently, a linearly weighted observer switching method and a linear signal withdrawal scheme are proposed to suppress torque and speed oscillations in medium-speed threshold. Furthermore, a normalized linear extended state observer (LESO) is designed to enhance rotor information estimation accuracy and enable the observation of unknown disturbances in full-speed thresholds. Finally, the effectiveness of the proposed sensorless control system is tested through experiments involving variations in speed, load, and parameter. The experimental results indicate that the proposed sensorless strategy is capable of achieving a loaded start. The designed observer switching strategy and the scheme of injection signal withdrawal contribute to a smoother acceleration process. Furthermore, load variation test results at high-speed thresholds demonstrate that the proposed controller can reduce speed drop by 45 rpm compared to a traditional PI. Additionally, the results of parameter variation testing validate the observer’s robustness in the disturbances of ψf within the range of ±0.3 pu.

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Section: Chattering Caused By Injected Signals and Smo Deserves Furth...mentioning

confidence: 99%

Section: The Rotor Position Identification Of Zero Speedmentioning

confidence: 99%

An Improved Full-Speed Domain Sensorless Control Scheme for Permanent Magnet Synchronous Motor Based on Hybrid Position Observer and Disturbance Rejection Optimization

Huang,

Zhao,

Wang

et al. 2023

Electronics

View full text Add to dashboard Cite

show abstract

“…The high-frequency signal injection method can be used to observe the motor speed at zero or low rates, but the observed effect could be better at medium and high speeds. The methods based on the fundamental wave back EMF are mainly SMO, extended Kalman filter, model reference adaptive and other processes, which can have a good observation effect at medium and high speeds of the motor [18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Application of a new type of super twist sliding mode control in flywheel energy storage

Liu

Wang

ZHOU

et al. 2023

IEICE Electron. Express

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Aiming at the error problem in estimating the speed of a permanent magnet synchronous motor(PMSM) using a sliding mode observer in a flywheel energy storage system, a super twist sliding mode observer(SMO) is used to replace the traditional sliding mode observer. A new saturation function is designed to replace the sign function. In addition, a constant sliding mode gain may lead to a decrease in observation accuracy during speed switching. An adaptive sliding mode gain is proposed to reduce chattering, The accurate estimation of the comprehensive speed range observer is enhanced, and the stability of the proposed observer is proved. On this basis, a super twist sliding mode speed controller is designed to replace the traditional PI controller to improve the observation performance of the system. The flywheel energy storage system's simulation model is built, and the flywheel energy storage system's constant speed standby and charging conditions are simulated. The simulation results verify the correctness and effectiveness of the improved super twist sliding mode observer in the flywheel motor.

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Real-Time Remote Sensorless Control of PMSM Using Embedded System and Webserver

Nicola¹,

Nicola²

2021

2021 3rd Global Power, Energy and Communication Conference (GPECOM)

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Sensorless Control based on Sliding Mode Observer for PMSM drive

Cited by 9 publications

References 14 publications

An Improved Full-Speed Domain Sensorless Control Scheme for Permanent Magnet Synchronous Motor Based on Hybrid Position Observer and Disturbance Rejection Optimization

An Improved Full-Speed Domain Sensorless Control Scheme for Permanent Magnet Synchronous Motor Based on Hybrid Position Observer and Disturbance Rejection Optimization

Application of a new type of super twist sliding mode control in flywheel energy storage

Real-Time Remote Sensorless Control of PMSM Using Embedded System and Webserver

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