International Journal of Innovative Research in Electrical, Electronics, Instrumentation and Control Engineering (IJIREEICE)
In this paper, a multilevel inverter was designed and implemented to operate a stand-alone solar photovoltaic system. The proposed system uses selective harmonics elimination Pulse-Width Modulation (PWM) in the multilevel inverter to convert DC voltage from battery storage to supply AC loads. In the PWM method, the effectiveness of eliminating low order harmonics in the inverter output voltage is studied and compared to that of the sinusoidal PWM method. This paper also uses SHEPWM to predict the optimum modulation index and switching angels required for a nine-level cascaded Hbridge inverter with improved inverter output voltage.