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Model-Based Control for a Three-Phase Shunt Active Power Filter.
- Source :
-
IEEE Transactions on Industrial Electronics . Jul2016, Vol. 63 Issue 7, p3998-4007. 10p. - Publication Year :
- 2016
-
Abstract
- This paper presents a robust model-based control in natural frame for a three-phase shunt active power filter. For the proposed control method, a linear converter model is deduced. Then, this model is used in a Kalman filter (KF) to estimate the system state-space variables. Even though the states estimation do not match the variables of the real system, it has allowed to design three sliding-mode controllers providing the following features to the closed-loop system: 1)  robustness due to the fact that control specifications are met independently of any variation in the system parameters; 2)  noise immunity, since a KF is applied; 3)  a lower total harmonic distortion (THD) of the current delivered by the grid compared with the standard solution using measured variables; 4)  the fundamental component of the voltage at the point of common coupling is estimated even in the case of a distorted grid; and 5)  a reduction in the number of sensors. Thanks to this solution, the sliding surfaces for each controller are independent. This decoupling property of the three controllers allows using a fixed switching-frequency algorithm that ensures a perfect current control. Finally, experimental results validate the proposed control strategy and illustrate all its interesting features. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 02780046
- Volume :
- 63
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Industrial Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 116162505
- Full Text :
- https://doi.org/10.1109/TIE.2016.2540580