IEEE Durham Region Subsection Speaker series

#power #electronics #control #systems #electronic #converters #system #design
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Talk 1: 

In this talk, the operation of DC-DC converters, which work by exchanging energy between storage elements due to the action of switching semiconductors are explored. The storage elements (mainly inductors and capacitors) are also called passive components. The size of the converters is highly influenced by the size of inductors and capacitors which is at the same time influenced by the power dissipation and the stored energy. It is desirable to design compact converters. However, reducing this energy cannot be done arbitrarily due to the constraints imposed by switching ripple specifications, and reducing the power rating cannot be done due to safety. Various topologies that have been designed with reduced stored energy, examining their advantages and the trade-offs involved will be highlighted. The discussion will highlight innovative approaches to achieving efficiency and compactness in converter design.

Talk 2: 

Designing compensators for control models in the αβ0 reference frame for tracking sinusoidal functions of time is not a straightforward task. Alternatively, a control scheme in dq reference frame offers the possibility to track dc control signals. It also allows simpler design of compensators. This talk covers a control scheme in the dq reference frame integrated to a modulator and voltage balancing algorithm for Hexverter-based systems functioning as an intertie. It can be considered as an extension of the control model developed for the two-level voltage source inverter. By doing so, an independent regulation of the Hexverter's active and reactive power flows can be realized. The control system is validated using PSCAD/EMTDC computer simulations.



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  • Date: 10 Jul 2024
  • Time: 01:00 PM to 03:30 PM
  • All times are (UTC-04:00) Eastern Time (US & Canada)
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  • 2000 Simcoe Street North
  • Oshawa, Ontario
  • Canada
  • Building: Science Building (UA)
  • Room Number: 2130

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  Speakers

Julio C Rosas Caro

Topic:

Stored energy in dc-dc converters, importance and recent advances

In this talk, the operation of DC-DC converters, which work by exchanging energy between storage elements due to the action of switching semiconductors are explored. The storage elements (mainly inductors and capacitors) are also called passive components. The size of the converters is highly influenced by the size of inductors and capacitors which is at the same time influenced by the power dissipation and the stored energy. It is desirable to design compact converters. However, reducing this energy cannot be done arbitrarily due to the constraints imposed by switching ripple specifications, and reducing the power rating cannot be done due to safety. Various topologies that have been designed with reduced stored energy, examining their advantages and the trade-offs involved will be highlighted. The discussion will highlight innovative approaches to achieving efficiency and compactness in converter design.

Biography:

Julio C. Rosas Caro holds a bachelor’s degree in electronics engineering, a master’s degree in electrical engineering from the Madero City Tech Institute, and a PhD in Science in Electrical Engineering from The Cinvestav Institute in Mexico. He is a Power Electronics professor at Universidad Panamericana in Guadalajara, Mexico. He has published around 90 articles in JCR Journals and around 65 articles in international conferences. Dr. Rosas-Caro is an associate editor for two journals and has led special issues in several journals. He is a member of Sigma Xi, the IET, and a Senior Member of the IEEE. His research interests focus on power electronics, DC-DC converters, stored energy reduction, and optimization of power converters.

Hector R.Robles Campos

Topic:

A control scheme in the dq reference frame for Hexverter-based systems

Designing compensators for control models in the αβ0 reference frame for tracking sinusoidal functions of time is not a straightforward task. Alternatively, a control scheme in dq reference frame offers the possibility to track dc control signals. It also allows simpler design of compensators. This talk covers a control scheme in the dq reference frame integrated to a modulator and voltage balancing algorithm for Hexverter-based systems functioning as an intertie. It can be considered as an extension of the control model developed for the two-level voltage source inverter. By doing so, an independent regulation of the Hexverter's active and reactive power flows can be realized. The control system is validated using PSCAD/EMTDC computer simulations.

Biography:

Héctor R. Robles-Campos is a full-time research professor at Universidad Panamericana Mexico, where he teaches and performs research in electrical engineering, particularly in power electronics and renewable energies. He is a faculty member of the Engineering Department. Dr Robles-Campos received the B.S. degree in electromechanical engineering from Universidad Panamericana, México, in 1997. He also received the M.S. and Ph.D. degrees in electrical engineering from the University of Colorado Denver, Denver, Colorado, United States of America, in 2018 and 2022, respectively. He has co-authored several technical articles, mostly in the area of power electronics.