INVERSOR MULTINIVEL DE CINCO NIVELES MONOFÁSICO PARA APLICACIONES SOLARES FOTOVOLTAICAS EN UN ENTORNO SIMULADO (SINGLE PHASE FIVE-LEVEL MULTILEVEL INVERTER FOR SOLAR PV APPLICATIONS IN A SIMULATED ENVIRONMENT)
Resumen
Este trabajo presenta un inversor multinivel de cinco niveles monofásico de topología de puente H en cascada para aplicaciones solares usando el tipo de modulación PWM multi portadora. Esta topología presenta mejoras en la calidad de la forma de onda de salida en comparación con los inversores convencionales ya que, al manejar más niveles, la distorsión armónica disminuye. Asimismo, frente a las otras topologías multinivel se tienen ventajas de modularidad y menor estrés térmico-eléctrico en los dispositivos de potencia. Para la modulación se utiliza la técnica APOD-PWM y se valida el funcionamiento mediante simulación en Matlab/Simulink para una potencia de 1 kW y se obtiene el valor de la THD.
Palabras clave: Energía solar, Inversor, Multinivel, PWM, THD.
Abstract
This paper presents a single-phase five-level multilevel inverter of cascaded H-bridge topology for solar applications using multi-carrier PWM modulation type. This topology presents improvements in the output waveform quality compared to conventional inverters since, by handling more levels, the harmonic distortion decreases. Also, compared to other multilevel topologies, there are advantages of modularity and lower thermal-electrical stress in the power devices. The APOD-PWM technique is used for modulation and the operation is validated by simulation in Matlab/Simulink for a power of 1 kW and the THD value is obtained.
Keywords: Inverter, Multilevel, PWM, Solar Energy, THD.
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