Journal Press India^®

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This paper presented the multi carrier pulse width modulation (MCPWM) and selective harmonic elimination (SHE) method for lowering the overall harmonic distortion in the output voltage of a cascade multilevel inverter (CMI). It was discovered that multi carrier pulse width modulation is a more effective technique for removing harmonics than the more common selective harmonic removal approach. The MCPWM and SHE approaches, as well as an FFT-based result derived from simulations of nine-level cascade multilevel inverters, are compared with one another in terms of Total Harmonic Distortion in order to validate the validity of the former. A result that was derived from simulations of a nine-level cascade multilevel inverter.

Keywords

Cascade multilevel inverter (CMI); Multi Carrier Pulse Width Modulation (MCPWM); Selective Harmonic Elimination (SHE) Technique; Total Harmonic Distortion (THD)

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