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Prediction-based deadbeat control for grid-connected inverter with L-filter and LCL-filter
Benyoucef, Abousoufiane; Kara, Kamel; Chouder, Aissa; Silvestre Bergés, Santiago
Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. MNT - Grup de Recerca en Micro i Nanotecnologies
In this article, an improved deadbeat control algorithm suitable for digital signal processor-based circuit implementation is proposed. The control algorithm allows the derivation of a nearly sine wave output current with a fixed switching frequency of a current-controlled voltage source inverter. Two low-pass output filters configurations are considered in this study: a simple inductance filter and an LCL-filter. By taking advantage of prior knowledge of the state variables’ shape, the improved deadbeat control algorithm is based on a simple prediction model to derive the expected duty cycle needed to switch on and off the power switches. The control study of the grid-connected inverter with L and LCL output filters has been considered using a co-simulation approach with (Powersim Inc., Rockville, Maryland, USA) and MATLAB software (The MathWorks, Natick, Massachusetts, USA). The obtained results show the improvement of both shape quality and tracking accuracy of the output current quantified by low ripple content and a nearly unity power factor.
Peer Reviewed
Àrees temàtiques de la UPC::Energies::Eficiència energètica
Àrees temàtiques de la UPC::Enginyeria electrònica
Renewable energy sources
Electric power
Renewable energy
Single-phase inverter
Deadbeat algorithm
Predictive control
Unity power factor
Lower total harmonic distortions
Digital signal processor
Energies renovables
Energia elèctrica
Attribution-NonCommercial-NoDerivs 3.0 Spain

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