Comparison of Cascaded H-Bridge Multilevel Inverters
A multilevel inverter is a power electronic converter built to synthesize a desired ac voltages from several levels of dc voltages which the dc levels were considered to be identical in that all of them were batteries, solar cells, capacitors etc. the multilevel inverter has gained much attention in recent years due to its advantages in lower switching loss better electromagnetic compatibility ,higher voltage sustainability and lower harmonics. in multilevel inverter a suitable pulse width modulation (pwm) technique is employed to obtain the required output voltage in the line side of the inverter.
Keywords – Multilevel inverter, THD, VSI, SPWM, topology.