Gaddafi S. Shehu and T. Yalcinoz and Abdullahi B. Kunya
Modelling and Simulation of Cascaded HBridge Multilevel Single Source Inverter Using PSIM
763 - 768
2014
8
5
International Journal of Energy and Power Engineering
https://publications.waset.org/pdf/9998239
https://publications.waset.org/vol/89
World Academy of Science, Engineering and Technology
Multilevel inverters such as flying capacitor, diodeclamped,
and cascaded Hbridge inverters are very popular
particularly in medium and high power applications. This paper
focuses on a cascaded Hbridge module using a single direct current
(DC) source in order to generate an 11level output voltage. The
noble approach reduces the number of switches and gate drivers, in
comparison with a conventional method. The anticipated topology
produces more accurate result with an isolation transformer at high
switching frequency. Different modulation techniques can be used for
the multilevel inverter, but this work features modulation techniques
known as selective harmonic elimination (SHE).This modulation
approach reduces the number of carriers with reduction in Switching
Losses, Total Harmonic Distortion (THD), and thereby increasing
Power Quality (PQ). Based on the simulation result obtained, it
appears SHE has the ability to eliminate selected harmonics by
chopping off the fundamental output component. The performance
evaluation of the proposed cascaded multilevel inverter is performed
using PSIM simulation package and THD of 0.94 is obtained.
Open Science Index 89, 2014