Speed-Sensorless Control of Induction Motor Drives with A STA-FLL Speed Estimation Scheme

Speed-sensorless control (SSC) techniques enhance the overall reliability while reducing the cost, and thus become attractive in induction motors (IMs). Simplicity and flexibility are the main features that make phase-locked loop (PLL)- and frequency-locked loop (FLL)-based speed estimation schemes...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2023-12, Vol.70 (12), p.1-13
Main Authors: Wang, Huimin, Yang, Yongheng, Ge, Xinglai, Zuo, Yun, Feng, Xiaoyun, Chen, Dunzhi, Liu, Yong-Chao
Format: Article
Language:English
Subjects:
Acceleration
Algorithms
Closed loops
Deceleration
Estimation
Frequency locked loops
Frequency locking
Harmonic analysis
Induction motor drives
Induction motors
Motor drives
Phase locked loops
Power harmonic filters
Quadratures
Rotors
second-order generalized integrator-frequency-locked loop (SOGI-FLL)
Signal generators
speed estimation
super-twisting algorithm (STA)
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Summary:Speed-sensorless control (SSC) techniques enhance the overall reliability while reducing the cost, and thus become attractive in induction motors (IMs). Simplicity and flexibility are the main features that make phase-locked loop (PLL)- and frequency-locked loop (FLL)-based speed estimation schemes stand out among considerable estimation methods. However, many PLL and FLL schemes exhibit a poor estimation accuracy in the cases of acceleration and deceleration (AaD). Accordingly, an adaptive second-order generalized integrator-FLL (SOGI-FLL)-based scheme is introduced. While, the issue of the estimated speed feedback (ESF) in the adaptive SOGI-FLL scheme remains an obstacle. With the above, a speed estimation scheme that combines the super-twisting algorithm with an FLL (STA-FLL) is proposed for the SSC of IM drives in this paper. In the proposed STA-FLL scheme, an STA-based quadrature signal generator (STA-QSG) is properly designed, in which the ESF is cancelled to further ensure speed estimation. Moreover, a closed-loop flux observer is adopted in the implementation to enhance the proposed STA-FLL scheme in terms of disturbance mitigation. Experimental tests are performed to validate the proposed STA-FLL scheme.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2023.3239879