Design and Implementation of Robust H∞ Control for Improving Disturbance Rejection of Grid-Connected Three-Phase PWM Rectifiers

Naima Ait Ramdane, Adel Rahoui, Boussad Boukais, Mohamed Fouad Benkhoris (), Mourad Ait-Ahmed and Ali Djerioui
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Naima Ait Ramdane: IREENA Laboratory, University of Nantes, 44602 Saint-Nazaire, France
Adel Rahoui: L2CSP Laboratory, Mouloud Mammeri University of Tizi-Ouzou, BP 17 RP, Tizi-Ouzou 15000, Algeria
Boussad Boukais: L2CSP Laboratory, Mouloud Mammeri University of Tizi-Ouzou, BP 17 RP, Tizi-Ouzou 15000, Algeria
Mohamed Fouad Benkhoris: IREENA Laboratory, University of Nantes, 44602 Saint-Nazaire, France
Mourad Ait-Ahmed: IREENA Laboratory, University of Nantes, 44602 Saint-Nazaire, France
Ali Djerioui: IREENA Laboratory, University of Nantes, 44602 Saint-Nazaire, France

Energies, 2024, vol. 17, issue 9, 1-16

Abstract: In response to the high performance requirements of pulse width modulation (PWM) converters in grid-connected power systems, H-Infinity ( H∞ ) control has attracted significant research interest due to its robustness against parameter variations and external disturbances. In this work, an advanced robust H∞ control is proposed for a grid-connected three-phase PWM rectifier. A two-level control strategy is adopted, where cascaded H∞ controllers are designed to simultaneously regulate the DC bus voltage and input currents even under load disturbances and non-ideal grid conditions. As a result, unit power factor, stable DC bus voltage, and sinusoidal input currents with lower harmonics can be accurately achieved. The design methodology and stability of the proposed controller are verified through a comprehensive analysis. Simulation tests and experimental implementation on a dSPACE 1103 board demonstrate that the proposed control scheme can effectively enhance disturbance rejection performance under various operating conditions.

Keywords: disturbance rejection; H-infinity control; robust control; three-phase pulse width modulation (PWM) rectifier; unbalanced grid voltage (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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