Multilevel inverters are superior to the two-level inverters to meet medium
and high - power applications. A seven-level diode-clamped multilevel topology (7LDCMT)
proposed, and compare the advantages and disadvantages of various control
strategies such as multilevel space vector pulse width modulation (MSVPWM) with
multicarrier sinusoidal pulse width modulations (MCSPWM) named as level shift and
phase shift PWM based on the position of carriers at certain frequency. In level shift
is further divided and compare the Inphase disposition sinusoidal pulse width
modulation (IPD-SPWM), phase opposition and disposition-sinusoidal pulse width
modulation (POD-SPWM), alternate phase opposition and disposition-sinusoidal
pulse width modulation (APOD-SPWM) and carrier phase displacement sinusoidal
pulse width modulation (CPD-SPWM). The 7L-DCMT designed with
MATLAB/SIMULINK and the performance can analyses based on the observing total
harmonic distortion (THD) at different control strategies.
