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Zbl 1111.93014
Marconi, Lorenzo; Ronchi, Fabio; Tilli, Andrea
Robust nonlinear control of shunt active filters for harmonic current compensation. (English)
[J] Automatica 43, No. 2, 252-263 (2007). ISSN 0005-1098

Summary: An advanced control strategy of shunt active filters (SAF) aiming to compensate for harmonic current in the electric supply grid is proposed. The SAF considered here is suitable for three-phase three-wire current harmonic compensation and is based on AC/DC three-phase boost converter topology. Robust control of the active-reactive current/power delivered by the SAF is designed exploiting the internal model principle. The stabilization of the DC-link voltage dynamics is addressed along with the fulfillment of the harmonics compensation objective. The two-time scale behavior of the SAF is exploited to apply the averaging theory in the control design. Experiments are provided to show the effectiveness of the proposed solution.

MSC 2000:: *93B35 Sensitivity (robustness) of control systems
93C70 Time-scale analysis and related topics
78A55 Technical appl. of optics and electromagnetic theory
93C15 Control systems governed by ODE
93C05 Linear control systems

Keywords: shunt active filter control; robust control; output regulation; singular perturbation; averaging theory

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