Investigation and analysis of multi Level inverter topologies for Power medium voltage applications

Abstract

Multi level inverters are the most powerful power conversion systems newlinefor high power medium voltage and power quality demanding applications newlineNow a days Multilevel inverters can achieve high power using mature newlineMedium power semiconductor technology This is a technology that has newlinePotential in Current and Future Power Applications This power inverter newlineoutput voltage improves its quality as the number of levels increases reducing newlinethe Total Harmonic Distortion THD of the output waveforms Nowadays newlineresearchers all over the world are spending great efforts trying to improve newlinemultilevel inverter performances such as the control simplification and the newlineperformance of different optimization algorithms in order to enhance the THD newlineof the output signals Hence then the focus is on the harmonic elimination newlineusing precalculated switching functions and the development of new newlinemultilevel inverter topologies hybrid or new ones and new control strategies newlinefor the medium voltage high power applications newlineThe objectives of this Research work are newlineand#61472;To develop a detailed comparison of THD among the 3 level and 5 newlinelevel Multi level inverter topologies using Sinusoidal Pulse Width newlineModulation SPWM Third Harmonic injected PWM THPWM and newlineSwitching Frequency Optimal PWM techniques SFOPWM newline newline newline newline