Teaching Power Electronics From The Control Point Of View

José Carlos Rodrigues de Oliveira; Giri Venkataramanan

doi:10.18618/REP.2008.2.125131

Authors

José Carlos Rodrigues de Oliveira Depto. de Engenharia Eletrônica - Escola de Engenharia da UFMG Belo Horizonte, MG, Brasil
Giri Venkataramanan Depart. of Electrical and Computer Engineering, University of Wisconsin - Madison Madison, WI, USA

DOI:

https://doi.org/10.18618/REP.2008.2.125131

Keywords:

Control of Power Electronics Converters, Methodology to Teach Power Electronics, Power Electronics Teaching Laboratory

Abstract

This paper presents a methodology to teach Power Electronics from the Control point of view, to be used in a laboratory course in the Undergraduate Program of Control and Automation Engineering at Federal University of Minas Gerais, Brazil. In this case, the ideal representation of the power switch is applied, not being necessary to take into consideration the switching ripple, but the averaged signals. In laboratory classes, a Microchip development module is used, permitting to study four non-isolated chopper configurations. The program covers static experimental observation and measuring, chopper modeling by equivalent averaged circuit, open-loop static calculation and validation, linearization about an operating point and dynamic non-linear and linear simulations. Due to uncertainties in the model, a suitable analog PI controller is designed and implemented from a black-box chopper model, giving a good performance to the converter under closed-loop operation. The “Motivation-by-Challenge” methodology is applied in the Power Electronics laboratory, permitting an effective participation of the students in the learning process: the closed-loop control problem of a chopper is proposed as a challenge, only finishing when a good solution is found.

Downloads

Download data is not yet available.

Author Biographies

José Carlos Rodrigues de Oliveira, Depto. de Engenharia Eletrônica - Escola de Engenharia da UFMG Belo Horizonte, MG, Brasil

born in Belo Horizonte, MG, Brazil, in 1951, is Electrical Engineer, UFMG, Brazil (1974), Master of Science in Electrical Engineering, UFMG (1980) and Doctor in Electrical Engineering, INPT, France (1991). He was engaged in international research cooperation between UFMG and INPT, Toulouse, France, from 1979 to 1991, and hosted Prof. Venkataramanan during part of his sabbatical period in 2006. Presently, he is Associated Professor in the Department of Electronics Engineering at Federal University of Minas Gerais, Brazil, coordinator of the teaching labs in Process Control, and has worked for the International Relations Board of UFMG. His main fields of interest are the application of methodologies for teaching Power Electronics and Control of Industrial Processes, Instrumentation and Control of Electrical Drives. Dr. Oliveira is a member of SOBRAEP – Brazilian Society on Power Electronics and SBA - Brazilian Society on Control and Automation. During the period 1982-1984 he was the Regional Director of SBA for Minas Gerais and Espírito Santo, as well as member of its national technical and administrative board. He has participated on the organization of SOBRAEP’s Brazilian Conference on Power Electronics - COBEP’97 in Belo Horizonte, MG, Brazil, and actuated as a reviewer for SOBRAEP and SBA conferences.

Giri Venkataramanan, Depart. of Electrical and Computer Engineering, University of Wisconsin - Madison Madison, WI, USA

born in India in 1964, is BE on Electrical and Electronics Engineering, University of Madras, India (1985), Master of Science in Electrical Engineering, California Institute of Technology (1987), and PhD in Electrical Engineering, University of Wisconsin - Madison (1992). Presently, he is Associated Professor in the Department of Electrical and Computer Engineering, University of Wisconsin-Madison, USA, as well as Associate Director of WEMPEC - Wisconsin Electric Machines and Power Electronics Consortium. He was Assistant Professor (1992- 1998) and Associate Professor (1998-1999) at Montana State University - Bozeman. His main fields of interest are power electronics, electromagnetic compatibility, electronics packaging, power engineering and education. Dr. Venkataramanan is a member of IEEE, where he was Secretary/Treasurer of the Montana Section (1996-1997) and Vice-Chair (1998-1999). He joins IEEE Power Electronics Society, Electromagnetic Compatibility Society, Electronics Packaging Society, Power Engineering Society and Education Society. He has been engaged in program organization and technical program committee of many IEEE Conferences. He is the recipient of the 2002 Gerald Morgridge Teaching Award, Department of ECE of UW, has five US Patents and has taken consultant activities for many companies in the US.

References

N.A. Kheir, K.J. Åström et al, "Control Systems Engineering Education", Automatica, IFAC, vol. 32, no. 2, pp. 147-166, 1996. https://doi.org/10.1016/0005-1098(96)85546-4 DOI: https://doi.org/10.1016/0005-1098(96)85546-4

J. J., Zhu, "Motivation-by-Challenge for Teaching Control Systems", IEEE Control Systems, vol. 14, no. 5, pp. 64-68, October, 1994. https://doi.org/10.1109/37.320890 DOI: https://doi.org/10.1109/37.320890

J. C. R. Oliveira, G. Venkataramanan, "Desenvolvimento e Aplicação de Metodologias Centradas no Aprendizado Ativo para Ensino e Pesquisa em Eletrônica de Potência e Acionamentos Elétricos" (Development and Application of Active Learning Methodologies for Teaching and Research in Power Electronics and Electrical Drives), CNPq Research Project no. 308863/2005-4, Escola de Engenharia da UFMG, Feb-May, 2006.

www.microchip.com, Microchip Technology, Inc., "PICDEM MSC1 User's Guide", 2001.

www.microchip.com, Microchip Technology, Inc., "PICDEM MSC1 SMPS Daughter Board User's Guide", 2003.

W.M.Polivka, P. R. K. Chetty, R. D. Middlebrook, "State-Space Average Modeling of Converters with Parasitics and Storage-Time Modulation", Proc. IEEE Power Electron. Spec. Conf., 1980, pp. 119-145. https://doi.org/10.1109/PESC.1980.7089440 DOI: https://doi.org/10.1109/PESC.1980.7089440

L.G.A. Scott, "Aplicação da Metodologia "Motivação pelo Desafio" ao Ensino de Controle de Sistemas Lineares" (Application of the Methodology "Motivation-by-Challenge" in Teaching Control of Linear Systems), MS Thesis, UFMG, Brazil, December, 1998.