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Power Factor Correction Case Study

Teacher Angelo Baggini


This course deals with the power factor correction (PFC) units design and related problems in case of harmonics rich environment. Particularly it provides an overview of the sizing approach in a real case of PFC units design for steel factory where the new PFC units replaced old ones after a fault with catastrophic damage to the existing compensation equipment.

Plant load, estimated at around 80 MVA, consists of large amount of small loads fed by power converters. They are significant disturbance source in terms of harmonic content. In particular, because of typical lack of real harmonics content data log, the main issue was to define generic harmonic distortion spectrum for installed loads, based on:

  • installed power converters
  • available literature about power converters spectra
  • field verification for PFC optimization, with three measurement campaigns aiming to verify real harmonic distortion together with risk of series and parallel resonance.

This kind of problem is real and constantly growing also in other industries, not only in steel factories where harmonics content has always been a key problem. Now, due to the continuous increase of power converters use, type of power consumption and because of increase of equipment sensitivity to disturbances, a deep measurement campaign is the key solution during PFC units design stage.

Students will receive guidance how to prepare installation of PFC equipment.

Target Audience

electrical engineers

Duration (hours)