Speaker
Professor
Roberto
Cárdenas
Department
of
Electrical
Engineering
University
of
Chile
Santiago,
Chile
Title
Topic 1: 4-leg Matrix Converter Control Methods for a Variable-Speed Diesel Generation System
Abstract
Generators working with variable speed, rather than fixed speed, have many advantages which are well documented in the literature. Higher efficiency, better power to size ratio and less mechanical stress in the system are some of the characteristics of variable speed generators. Four-leg matrix converters can be used as the power electronic interface between variable speed generators and stand-alone loads. The fourth leg provides a neutral point for single phase loads and a path for the circulation of zero sequence currents. In this presentation, control systems suitable for the regulation of 4-leg matrix converters are discussed.
Title
Topic 2: Control of a 7-leg Voltage Source PWM Inverter for Variable Speed Operation
Abstract
This presentation considers the control of a 7-leg back-to-back Voltage Source Inverter (VSI) arrangement feeding a 4-wire load from a 3-phase PM generator. The entire converter system is regulated using resonant controllers and employs a feed-forward power compensation term to improve transient performance. Experimental results, obtained from a prototype, are presented and discussed.
Speaker Biography
Roberto Cárdenas was born in Punta Arenas Chile. He received his B.S. degree from the University of Magallanes, Chile, in 1988 and his M.Sc. and Ph.D degrees from the University of Nottingham, UK, in 1992 and 1996, respectively. From 1989 to 1991 and 1996 to 2008, he was a lecturer in the University of Magallanes Chile. From 1991 to 1996, he was with the Power Electronics Machines and Control Group (PEMC group), University of Nottingham, UK. From 2009 to 2011, he was with the Electrical Engineering Department, University of Santiago. He is currently a professor in power electronics and drives with the Electrical Engineering Department, University of Chile, Chile. He received the Best Paper Award from the IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS in 2005, the "Ramon Salas Edward" Award from the Chilean Institute of Engineers in 2009 and the best paper award from the Electrical Vehicles and Renewable Energy (EVER2013) conference in Monaco 2013. His main interests are in control of electrical machines, variable speed drives and renewable energy systems. Professor Cárdenas is a senior member of the Institute of Electrical and Electronic Engineers.
Invited by: Professor Mehrdad Kazerani