Brief view on control of grid-interfacing AC-DC-AC converter and active filter under unbalanced and distorted voltage conditions

Szymon Piasecki; Marek Jasinski; Aritz Milicua

doi:10.1108/03321641111091601

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COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering

ISSN: 0332-1649

Online from: 1982

Subject Area: Electrical & Electronic Engineering

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Brief view on control of grid-interfacing AC-DC-AC converter and active filter under unbalanced and distorted voltage conditions

Document Information:
Title:	Brief view on control of grid-interfacing AC-DC-AC converter and active filter under unbalanced and distorted voltage conditions
Author(s):	Szymon Piasecki, (Institute of Control and Industrial Electronics, Warsaw University of Technology, Warsaw, Poland), Marek Jasinski, (Institute of Control and Industrial Electronics, Warsaw University of Technology, Warsaw, Poland), Aritz Milicua, (Faculty of Engineering, University of Mondragon, Mondragon, Spain)
Citation:	Szymon Piasecki, Marek Jasinski, Aritz Milicua, (2011) "Brief view on control of grid-interfacing AC-DC-AC converter and active filter under unbalanced and distorted voltage conditions", COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering, Vol. 30 Iss: 1, pp.351 - 373
Keywords:	Electric converters, Electric power generation, Wind power
Article type:	Research paper
DOI:	10.1108/03321641111091601 (Permanent URL)
Publisher:	Emerald Group Publishing Limited
Acknowledgements:	This work has been supported by the European Union in the framework of European Social Fund through the Warsaw University of Technology Development Programme. The authors gratefully acknowledge the partial financial support of the European Union FP6 (Contract No. 019983 Wave Dragon MW).
Abstract:	Purpose – The purpose of this paper is to consider both sides of a back-to-back AC-DC-AC interface. Design/methodology/approach – The paper presents a mathematical analysis, simulation, laboratory test in scaled model. Findings – The two main findings comprised concept of control methods for grid AC-DC-AC converter applied in renewable energy sources with variable speed operation under distorted grid. Active filtering functionality in case of non-linear current of a parallel load. Second, a control algorithm dedicated for two-level AC-DC converter applied in industrial networks with high-order harmonics compensation working under hard conditions – balanced and unbalanced voltage dips. Research limitations/implications – The paper shows preliminary results for AC-DC-AC converter and active filter (AF) during voltage dips and for harmonics compensation. Control methods and/or topology should be improved and tested in scale and after at high-power system. Practical implications – Power quality supplied/received to/from the grid can be increased. In case of low-cost system only AF can be applied to existing non-linear receivers. Moreover, in case of full AC-DC-AC converter energy saving and production is possible. Originality/value – Presented control methods give satisfactory results. Paper presents laboratory results for grid and machine side two different power circuits during steady states and transients. Moreover, active filtering operation during voltage dips is presented.