A three-phase, variable-frequency drive (VFD) draws lagging non-sinusoidal line current, resulting in significant wavefo
Posted: Fri Apr 29, 2022 8:26 am
- A Three Phase Variable Frequency Drive Vfd Draws Lagging Non Sinusoidal Line Current Resulting In Significant Wavefo 1 (104.25 KiB) Viewed 18 times
A three-phase, variable-frequency drive (VFD) draws lagging non-sinusoidal line current, resulting in significant waveform distortion. The VFD is connected to a 480 V service and draws 24 kW. Spectral analysis of the current reveals the following: Table 1 Harmonic RMS line current magnitudes N IRMS (A) 1 35 3 15 5 12 7 7 9 5 Non a. Calculate the Displacement power factor. b. Calculate the THD of the current waveform!. c. Calculate the True power factor.