A shunt active power filter for a medium-voltage 12-pulse current source converter using open loop control compensation

Mostafa S. Hamad, Mahmoud I. Masoud, Khaled H. Ahmed, Barry W. Williams

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)


AC-side compensation for current source converters using a shunt active power filter (SAPF) is affected by delays introduced into the reference signals and/or the actual injected current. The delays should be identified and compensated to eliminate distortion from the supply current extracted from the point of common coupling, such that the total harmonic distortion complies with standards. An improved distortion factor is achieved if the delay for each harmonic order is considered individually. This paper introduces an open-loop control strategy for the SAPF, which is capable of mitigating specific and predetermined harmonic orders and consequently achieves low total harmonic distortion. The delays are minimized or eliminated when extracting the reference current and controlling the filter current. The control technique is applied on a medium-voltage asymmetrically controlled 12-pulse ac to dc current source converter, which follows a specific power locus with the SAPF connected via taps on the star connected secondary winding of the front end transformer, to compensate the mains current dominant harmonics (5th, 7th, 11th, and 13th). Medium voltage simulation results are verified experimentally using a scaled prototype.
Original languageEnglish
Article number6766214
Pages (from-to)5840-5850
Number of pages11
JournalIEEE Transactions on Industrial Electronics
Issue number11
Early online date12 Mar 2014
Publication statusPublished - Nov 2014


  • 12-pulse converters
  • AC-side compensation
  • active power filters (APF)
  • harmonic compensation
  • medium voltage (MV)
  • open-loop control
  • power quality
  • shunt active power filter (SAPF)
  • control theory
  • DC transformers
  • harmonic analysis
  • wave filters


Dive into the research topics of 'A shunt active power filter for a medium-voltage 12-pulse current source converter using open loop control compensation'. Together they form a unique fingerprint.

Cite this