REDUCCIÓN DE CORRIENTE DE FUGA EN INVERSOR TRIFASICO PARA APLICACIONES FOTOVOLTAICAS (DECREASE OF THE LEAKAGE CURRENT ON THREE-PHASE INVERTER FOR PHOTOVOLTAIC APPLICATIONS)

Elizabeth Espitia, Héctor López, Nimrod Vázquez, Joaquín Vaquero

Resumen


Resumen

Hoy en día, el estudio sobre los inversores sin transformador conectados a la red se ha incrementado, los principales aspectos considerados son el patrón de conmutación, la topología, los filtros y también el controlador. Ciertamente, uno de los principales aspectos es eliminar o reducir la corriente de fuga generada por la capacitancia parásita inherente a un sistema fotovoltaico. Este artículo se centra en la reducción de la corriente de fuga de un inversor trifásico sin transformador cambiando de forma sencilla la conexión del filtro de salida. Los resultados de simulación validan la propuesta.

 

Palabra(s) Clave: Capacitor parásito, corriente de fuga, sin transformador, inversor trifásico.

 

Abstract

Nowadays, the study about grid connected transformerless inverters has been increased, the main aspects considered are the switching pattern, the topology, the filters, and also the controller. Certainly, the main concern is to eliminate or to reduce the leakage current generated in the parasitic capacitance inherent in a photovoltaic system and, therefore, achieve safety requirements. This paper focuses on a leakage current reduction of a three-phase transformerless inverter by simple changing the connection of the output filter. Simulation results validate the proposal.

Keywords: Leakage current, photovoltaic system (PV), parasitic capacitance, transformerless, three-phase full-bridge.


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Referencias


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