Journals Information
Universal Journal of Electrical and Electronic Engineering Vol. 6(5), pp. 383 - 401
DOI: 10.13189/ujeee.2019.060509
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Sensorless Nonlinear Control Strategy of the Single Phase Active Power Filters via Two-time Scale Singular Perturbation Technique
Y. Mchaouar 1,*, C. Taghzaoui 1, A. Abouloifa 1, M. Fettach 1, A. Ellali 1, I. Lachkar 2, F. Giri 3
1 LTI Laboratory, Faculty of Sciences Ben M'sik, Hassan II- Casablanca University, Morocco
2 ESE Laboratory, ENSEM, Hassan II-Casablanca University, Morocco
3 GREYC, University of Caen Basse-Normandie, France
ABSTRACT
This paper focuses on the problem of controlling single-phase shunt active power filters (APFs) operating in the presence of nonlinear and uncertain loads. The main difficulties when controlling this kind of filter are the existence of a strong non-linearity of the system and state variables inaccessible to measurements. This paper proposes a double-loop cascade controller developed on the basis of the singular perturbation technique in order to meet two main control objectives: (i) the inner-loop is designed to compensate the harmonic and reactive currents absorbed by the nonlinear load enforcing power factor correction; (ii) the outer-loop is synthesized to regulate the inverter output capacitor voltage. The controller also includes two-time scale sliding mode observer to estimate the network voltage that is not accessible to measurement. In this work, the singular perturbation technique and averaging theory are used for a complete and rigorous formal analysis to describe the control system performances. The effectiveness of this approach has been successfully verified through computer simulations using the Matlab/Simulink environment.
KEYWORDS
Active Power Filters, Singular Perturbation, Two-time Scale Sliding Mode Observer, Averaging Theory, Nonlinear Controller
Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Y. Mchaouar , C. Taghzaoui , A. Abouloifa , M. Fettach , A. Ellali , I. Lachkar , F. Giri , "Sensorless Nonlinear Control Strategy of the Single Phase Active Power Filters via Two-time Scale Singular Perturbation Technique," Universal Journal of Electrical and Electronic Engineering, Vol. 6, No. 5, pp. 383 - 401, 2019. DOI: 10.13189/ujeee.2019.060509.
(b). APA Format:
Y. Mchaouar , C. Taghzaoui , A. Abouloifa , M. Fettach , A. Ellali , I. Lachkar , F. Giri (2019). Sensorless Nonlinear Control Strategy of the Single Phase Active Power Filters via Two-time Scale Singular Perturbation Technique. Universal Journal of Electrical and Electronic Engineering, 6(5), 383 - 401. DOI: 10.13189/ujeee.2019.060509.