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A Survey on Pulse Width Modulation Techniques for Multilevel Inverters

J. N. BhanuTej, S. Vedith, S. Sampath, M. Usha sree, P. Nithin Rao


This Article presents the most common topologies for medium voltage high power applications, such as Diode Clamped Multilevel Inverter (DCMLI), Flying Capacitor Multilevel Inverter (FCMLI) and Cascaded H-Bridge Multilevel Inverters (CHBMLI). The different Pulse Width Modulation (PWM) like Space Vector Modulation (SVM), Selective Harmonic Elimination (SHE), and Sinusoidal Pulse Width Modulation (SPWM) etc. Evaluation of different modulation techniques for multilevel inverters (MLI) are discussed. The relevant control and modulation techniques developed for different types of Multilevel Inverters are explored. We have used the various modulation techniques for the control of multilevel inverters. Conventional PWM techniques, optimization techniques are mentioned, among the all multi carrier Sine Pulse Width Modulation (SPWM), techniques are widely used and comparison of technique are discussed. The Modified Particle Swarm Optimization (MPSO) is supposed to better for control and reduced Total Harmonic Distortion (THD).


Control Algorithms, Multilevel Inverters, Optimization Techniques, Photovoltaic Systems, Total Harmonic Distortion, Pulse Width Modulation.

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