Therefore, many researchers focused more on implementing
the multilevel inverter to improve the performance of motor drive
and increase the power quality at the same to achieve the desired
target especially to get better efficiency for high application such
as traction, stamper machine or automotive sector. Lately,
multilevel inverter is widely used as reported in [10, 11] for many
extreme applications, one of them is to improve performance of
motor drive in order to achieve the superior performance. The
term 'multilevel' was introduced by Nabae et al since the
semiconductor devices were developed in the middle of 1970's.
Many improvements can be obtained by using the multilevel
inverter [12, 13] to increase the performance. As described in
[14], it has three common topologies; Cascaded H- Bridge
Multilevel Inverter, Flying-Capacitor Multilevel Inverter and
Neutral Clamp Capacitor multilevel inverters. Each topology has
different configuration or layout structure.