Abstract
This paper presents MRAS speed sensorless control of induction motor using type-2 fuzzy logic controller (T2FLC). These controllers replace the PI ones, in the new MRAS strategy proposed in Benlaloui et al. (IEEE Trans Energy Convers 30(2):588–595, 2015), in order to improve the induction motor performances and robustness at low speed region. Indeed, the choice of these controllers is made because of their adaptation-based schemes which permit to handle nonlinear uncertain systems without the need of precise mathematical model required when using PI controllers. Comparative study had shown a better rejection of disturbance and high insensitivity to stator resistance compared to the PI and the T1FLC controllers. The effectiveness of the proposed speed-based T2FLC estimation method and its good robustness are validated by simulation and by experimental results.
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Abbreviations
- MRAS:
-
Model Reference Adaptive System
- T2FLC:
-
Type-2 Fuzzy Logic Controller
- IM:
-
Induction machines
- FOC:
-
Field-oriented control
- PI:
-
Proportional–integral
- IFOC:
-
Indirect field-oriented control
- s, r :
-
Rotor and stator indices
- d, q :
-
Direct and quadrate indices for orthogonal components
- P :
-
Number of pairs poles
- Ω :
-
Rotor speed (rd/s)
- ω r :
-
Induced rotor current frequency (rd/s)
- J in :
-
Inertia
- Γ :
-
Unknown torque
- *:
-
Symbol indicating the command value
- \(\overline{x}^{*}\) :
-
Complex conjugate
- \(R_{{\text{s}}} ,R_{{\text{r}}}\) :
-
Stator and rotor resistances
- \(L_{s} ,L_{r}\) :
-
Stator and rotor inductances
- \(T_{{\text{s}}} ,T_{{\text{r}}}\) :
-
Stator and rotor time constants (Ts,r = Ls,r/Rs, r)
- σ :
-
Leakage flux total coefficient (σ = 1 − M2/LrLs)
- M :
-
Mutual inductance
- ω :
-
Mechanical rotor frequency (rd/s)
- ω s :
-
Stator current frequency (rd/s)
- f :
-
Coefficient of viscous
- Γ e :
-
Electromagnetic torque
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Appendices
Appendix
Machine parameters and rated values
Rr = 5.1498 Ω; Rs = 12.75 Ω; M = 0. 4331 H; Ls = 0. 4991 H; Lr = 0.4331 H; J = 0.0035 kg m2; f = 0.001 Nm s/rd; Pn = 0.9 kW; n = 1400 rpm; p = 2; f = 50 Hz; load torque = 10 Nm.
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Benlaloui, I., Chrifi-Alaoui, L., Ouriagli, M. et al. Improvement of the induction motor sensorless control based on the type-2 fuzzy logic. Electr Eng 103, 1473–1482 (2021). https://doi.org/10.1007/s00202-020-01178-1
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DOI: https://doi.org/10.1007/s00202-020-01178-1