New PWM technique for five-stepped PWM inverter used in photovoltaic system

Abstract

A new type o f P W M i n v e r t e r i s proposed, which has f i v e -s t e p p e d l e v e l s o f t h e output voltage. I n t h i s i n v e r t e r the waveform o f the output v o l t a g e has s m a l l e r harmonic c o n t e n t s t h a n t h o s e o f a