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Multi-resonant frequency-locked loop for grid synchronization of power converters under distorted grid conditions
Rodríguez Cortés, Pedro; Luna Alloza, Álvaro; Candela García, José Ignacio; Mujal Rosas, Ramón María; Teodorescu, Remus; Blaabjerg, F.
Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica; Universitat Politècnica de Catalunya. SEER - Sistemes Elèctrics d'Energia Renovable
This paper presents a new multiresonant frequencyadaptive synchronization method for grid-connected power converters that allows estimating not only the positive- and negative-sequence components of the power signal at the fundamental frequency but also other sequence components at other harmonic frequencies. The proposed system is calledMSOGI-FLL since it is based on both a harmonic decoupling network consisting of multiple second-order generalized integrators (MSOGIs) and a frequency-locked loop (FLL), which makes the system frequency adaptive. In this paper, the MSOGI-FLL is analyzed for singleand three-phase applications, deducing some key expressions regarding its stability and tuning. Moreover, the performance of the MSOGI-FLL is evaluated by both simulations and experiments to show its capability for detecting different harmonic components in a highly polluted grid scenario.
Peer Reviewed
Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència::Convertidors de corrent elèctric
Àrees temàtiques de la UPC::Energies::Energia elèctrica::Convertidors estàtics d'energia elèctrica
Electric current converters
Power electronics
Convertidors de corrent elèctric
Sistemes elèctrics de potència
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
info:eu-repo/semantics/publishedVersion
Artículo
IEEE Press. Institute of Electrical and Electronics Engineers
         

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