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Global MPPT scheme for photovoltaic string inverters based on restricted voltage window search algorithm
Boztepe, Mutlu; Guinjoan Gispert, Francisco; Velasco Quesada, Guillermo; Silvestre Bergés, Santiago; Chouder, Aissa; Karatepe, Engin
Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. EPIC - Disseny de circuits analògics integrats i de convertidors de potencia conmutats; Universitat Politècnica de Catalunya. MNT - Grup de Recerca en Micro i Nanotecnologies
String inverter photovoltaic (PV) systems with bypass diodes require improved global maximum power point tracking (GMPPT) algorithms to effectively reach the absolute maximum power operating point. Several GMPPT algorithms have been proposed to deal with this problem, but most of them require scanning wide voltage ranges of the PV array from nearly zero voltage to open-circuit voltage that increases the scanning time and, in turn, causes energy loss. This paper presents a novel GMPPT method which significantly restricts the voltage window search range and tracks the global power peak rapidly in all shading conditions. Simulation tests and experimental comparisons with another GMPPT algorithm are presented to highlight the features of the presented approach.
Àrees temàtiques de la UPC::Enginyeria electrònica
Photovoltaic power generation.
Maximum power point (MPP) tracking (MPPT)
partial shading
photovoltaic (PV) power systems
string inverters
POWER POINT TRACKING
SHADED INSOLATION CONDITIONS
GRID-CONNECTED INVERTERS
PV SYSTEMS
ARRAY
MODULES
CONVERTER
MODEL
COMPENSATION
CONTROLLER
Energia fotovoltaica
Energia solar
info:eu-repo/semantics/publishedVersion
Article
Institute of Electrical and Electronics Engineers (IEEE)
         

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