Frequency-domain Analysis Of Resonant Current Controllers For Active Power Filters

Leonardo Rodrigues Limongi; Daniel Roiu; Radu Bojoi; Alberto Tenconi

doi:10.18618/REP.2010.4.294304

Authors

Leonardo Rodrigues Limongi Universidade Federal de Pernambuco, Department of Electrical Engineering, Recife-PE – Brazil
Daniel Roiu FIAT Research Centre, Torino-TO – Italy
Radu Bojoi FIAT Research Centre, Torino-TO – Italy
Alberto Tenconi Politecnico di Torino, Department of Electrical Engineering, Torino-TO – Italy

DOI:

https://doi.org/10.18618/REP.2010.4.294304

Keywords:

Active Power Filters, Current control

Abstract

This paper performs a frequency-domain analysis of three different resonant current controllers for active power filters. Respect to previous papers, the novelty consists of a stability analysis of the closed loop system using the Nyquist criterion. To perform this analysis, the time delay introduced by the inverter and the sampling due to the digital control are taken into account in the current controller closed loop transfer function. This procedure demonstrates the importance and effectiveness of the delay compensation to maintain the whole system stability. Experimental results are presented for a 25 kVA shunt active power filter prototype to confirm the theoretical analysis.

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Author Biographies

Leonardo Rodrigues Limongi, Universidade Federal de Pernambuco, Department of Electrical Engineering, Recife-PE – Brazil

was born in Recife, Brazil, in 1978. He received the M.Sc. degree in electrical engineering from the Universidade Federal de Pernambuco, Recife, Brazil, in 2006, and the Ph.D. degree from the Politecnico di Torino, Turin, Italy, in 2009. Since 2010, he has been at the Electrical Engineering Department, Universidade Federal de Pernambuco, where he is currently a Professor of Electrical Engineering. He is the author of more than 20 papers published in international conference proceedings and technical journals. His research interests include the fields of power electronics dedicated to power conditioning systems and distributed generation.

Daniel Roiu, FIAT Research Centre, Torino-TO – Italy

was born in Iasi, Romania, in 1981. He received the M.Sc. degree in electrical engineering from the Technical University Gh. Asachi Iasi, Iasa, Romania, in 2005, and a joint Ph.D. degree from the Technical University Gh. Asachi Iasi and the Politecnico di Torino, Turin, Italy, in 2009. He is currently a Researcher in FIAT Research Centre, Turin. His scientific interests include power electronics devices for power quality improvement and distributed generation interfaces.

Radu Bojoi, FIAT Research Centre, Torino-TO – Italy

received the M.Sc. degree in electrical engineering from the Technical University Gh. Asachi Iasi, Iasi, Romania, in 1993, and the Ph.D. degree from the Politecnico di Torino, Turin, Italy, in 2003. From 1994 to 1999, he was an Assistant Professor in the Department of Electrical Drives and Industrial Automation, Technical University of Iasi. In 2004, he joined the Electrical Engineering Department, Politecnico di Torino, where he is currently an Associate Professor. He is the author of more than 60 papers published in international conference proceedings and technical journals. His scientific interests include the design and development of DSP- and FPGA-based advanced control systems in the fields of power electronics, high performance electrical drives, and power-conditioning systems. Dr. Bojoi received the IPEC First Prize Paper Award in 2005.

Alberto Tenconi, Politecnico di Torino, Department of Electrical Engineering, Torino-TO – Italy

received the M.Sc. and the Ph.D. degrees in electrical engineering from the Politecnico di Torino, Turin, Italy, in 1986 and 1990, respectively. From 1988 to 1993, he was with the Electronic System Division of the FIAT Research Center, where he was engaged in the development of electrical vehicle drive systems. He then joined the Department of Electrical Engineering, Politecnico di Torino, where he is currently a Full Professor. He is the author of more than 120 papers published in international journals and conference proceedings. He is a reviewer of international journals and Associate Editor of IEEE Transactions on Industrial Electronics. His fields of interest are high-performance drive design, new power electronic device applications, and nonconventional electric machines development. He has participated both as a designer and as a scientist in many national and European research programs.