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Electrical, Control and Communication Engineering

The Journal of Riga Technical University

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AC-DC Converter with Asymmetrical Higher Harmonics Compensation Function in Sustainable AC Grid

Grzegorz Wrona / Marek Jasinski
Published Online: 2013-05-11 | DOI: https://doi.org/10.2478/ecce-2013-0001


In this paper the grid current higher harmonic compensation method for two level AC-DC converters in sustainable AC grid is described. The algorithm is based on Direct Power Control with Space Vector Modulator (DPC-SVM), which was extended by additional Higher Harmonics Compensation (HHC) module. The HHC block is composed of several resonant filters tuned to appropriate frequencies. Both, symmetrical and asymmetrical types of grid currents distortions are analyzed. Operation of the HHC module in stationary αβ coordinates and rotating dq coordinates is discussed. Selected waveforms illustrating operation of the developed algorithm are presented. It is shown that in dq coordinates asymmetrical voltage distortions needs additional effort for its compensation in comparison to symmetrical higher harmonics. The subject is important because in practice asymmetrical higher harmonics usually can appear when one phase nonlinear load is connected to the grid. Even within such conditions the grid connected ACDC converter (GCC) should provide sinusoidal-like current. This assumption provides the reduction of negative impact of the GCC in power quality in Point of Common Coupling (PCC) in sustainable AC grid

Keywords : Power quality; AC-DC power converters; pulse width modulation inverters; bidirectional power flow; power harmonic filters

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About the article

Grzegorz Wrona

Grzegorz Wrona received the M.Sc.E.E. degree in electrical engineering from the Institute of Control and Industrial Electronics, Warsaw University of Technology (WUT), Warsaw, Poland, in 2010. Since 2010 he is a Ph.D. student in Electrical Engineering Faculty, WUT. His research interests include power converters applied to renewable energy applications, control of power electronic converters and industrial drives, power quality in renewable generation plants and DSP Microcontroller. Postal address: Institute of Control and Industrial Electronics, Warsaw University of Technology, ul. Koszykowa 75, 00-662 Warszawa, Poland.

Marek Jasinski

Marek Jasinski (M’00 SM’12) received the M.Sc.E.E. degree with SEP and IEEE (PS) distinction, and Ph.D. degree in Electrical Engineering from the Institute of Control and Industrial Electronics (ICIE), Warsaw University of Technology (WUT), Warsaw, Poland, in 2000, and in 2005, respectively. Since 2006 he is with the ICIE, WUT as Assistant Professor. His research activity deals with control of power electronics converters for drives and renewable energy sources. Since 2006 he is working on power take off train for renewable energy sources. He is an author or co-author more than 60 technical papers. He was at Aalborg University, Denmark, as a guest researcher of the VESTAS Power Program, in 2009. Dr Jasinski is a IEEE PS Chapters Coordinator. He was a scholar of Foundation for Polish Science and Center for Advanced Studies of WUT. He received ABB distinction for his Ph.D. dissertation, and SIEMENS Research Award. Postal address: Institute of Control and Industrial Electronics, Warsaw University of Technology, ul. Koszykowa 75, 00-662 Warszawa, Poland.

Published Online: 2013-05-11

Published in Print: 2013-04-01

Citation Information: Electrical, Control and Communication Engineering, Volume 2, Issue 1, Pages 5–13, ISSN (Online) 2255-9159, ISSN (Print) 2255-9140, DOI: https://doi.org/10.2478/ecce-2013-0001.

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