Nuevo inversor fotovoltaico integrado sin transformador
Resumen
Los inversores sin transformador son ampliamente utilizados en sistemas fotovoltaicos conectados a la red eléctrica, debido a los beneficios de lograr alta eficiencia y bajo costo.
El inversor fotovoltaico sin transformador puede generar una corriente de fuga entre el inversor y la red eléctrica, a través de la capacitancia parásita del módulo fotovoltaico y la tierra física. Esta corriente de fuga provoca una disminución de la eficiencia, reduce el tiempo de vida del módulo fotovoltaico y pone en riesgo al personal que esté en contacto con el sistema. Se han propuesto varias topologías de inversores sin transformador para reducir esta corriente de fuga; este trabajo propone una topología diferente que consiste en la integración de dos etapas, un inversor puente completo y un convertidor CD/CD elevador. Una terminal de salida del inversor está conectada directamente a tierra y el convertidor es controlado por modos deslizantes.
Palabra(s) Clave(s): control por modos deslizantes, corriente de fuga, inversor fotovoltaico.
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