Plenary Lecture

Novel Control Strategies in Multilevel Inverters to Improve its Performance

Professor Pardo Garcia Aldo
Electrical and Mechatronic Department
University of Pamplona
Colombia
E-mail: apardo13@hotmail.com

Abstract: In the last years, the multilevel inverters have been used increasingly in renewable energy systems (photovoltaic and wind) and speed control systems of three-phase electric motors. Recently, several control techniques of multilevel inverters have emerged including multilevel inverters with different modulations to improve the harmonic content. Have been proposed different control strategies that allow decreasing the operating frequency maintaining minimal total harmonic distortion. This lecture deals with some of the techniques used to improve multilevel inverters, such as: a) An optimized modulation with minimal harmonic content, using a control loop that allows obtaining optimum power quality to complying the IEEE standards b) A multiobjective optimization algorithm to determine modulations with voltage vs. frequency ratio that reduces the output voltage as the frequency decreases, keeping the total harmonic distortion close to 0% in the entire operating frequencies range. In addition, some of the research results of the author and his colleagues that have been conducted in recent years are also discussed.

Brief Biography of the Speaker: Prof. Pardo Garcia Aldo is a full Professor in Electrical and Mechatronic Department, University of Pamplona. He is an Electrical Engineer, graduated in Belarusian State Agrarian Technical University 1983, (MSc 1983, Esp. 1982) and graduated PhD in Belarusian National Technical University 1990. Postdoctoral research at CINVESTAV Guadalajara, Mexico (2007/2 – 2007/4), Postdoctoral research at Florida International University, USA (2007/9 – 2009/3). Over 30 years of experience of teaching and research in Universities - of Camaguey, (Cuba, 12 years), of Byelorussia (Minsk, Byelorussia, 3 years) and Pamplona, Norte de Santander, Colombia (20 years and currently). For 7 years was the head of the research in The Institute for Research and Applied Technology Development (IIDTA 2000 - 2007), University of Pamplona, Colombia, dedicated to create innovative products and researches processes for university and industry. Dean of the Faculty of Engineering (2010 to 2013). Lector plenary in Universities of Mexico, of Venezuela, of Spain, of Byelorussia, of Colombia, of Cuba, of Puerto Rico, of United State of America, of Portugal and of Rumania. The results in the last 5 years: Articles published (59), Projects research (6), Softwares with copyright (10), Books published (5), and Participation as an opponent for Masters (16) and PhD thesis (5).

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