Performing a harmonic analysis on a motor drive system involves measuring the voltage and current waveforms in the system and then using a spectrum analyzer or other signal processing equipment to decompose the waveforms into their individual frequency components. A harmonic is a frequency component that is an integer multiple of the fundamental frequency (typically 50 or 60 Hz). Motor drive systems, particularly those using variable frequency drives (VFDs), can generate harmonics due to the non-linear switching characteristics of the power electronic component....
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