Francisco   de Leon

Francisco de Leon

Associate Professor

Electrical & Computer Engineering

Biography

Updated information at: http://power.poly.edu/deleon.html

Iwas born in Mexico City in 1959, received the B.Sc. degree and the M.Sc. degree (summa cum laude) in Electrical Engineering from the National Polytechnic Institute(IPN), Mexico, in 1983 and 1986, respectively. In 1992 I have obtained the Ph.D. degree from the University of Toronto, Canada. From 1992 to 1997 I was with the Graduate Division of the School of Electrical and Mechanical Engineering of the IPN, Mexico. From September 1997 to August 1998 I was on a sabbatical leave at McGill University in Montreal, and from September 1998 to April 1999 I was a post-doctoral researcher at the University of Toronto.

        I have worked for Windomotion (a Magna International Company – QS9000 – in Newmarket, Ontario) during 1999. From 1999 to 2001 I worked for Plitron Manufacturing (Toronto) in the research and development of standard and special toroidal transformers. I have worked as an industry consultant for the Federal Commission of Electricity (CFE) and Industrias IEM (formerly Westinghouse, Mexico) from 1994 to 1997 and for L&K International Training in Toronto during 1999 and 2000.  From September 2001 to December 2003 I was with Universidad Michoacana in Morelia, Mexico.  From 2004 to 2007 I was the Director of R&D at CYME International T&D in St. Bruno (Quebec) developing professional grade software for the analysis of power and distribution systems. I was the responsible for the development of the cable ampacity program CYMCAP. In September 2007 I have joined the Department of Electrical and Computer Engineering of Polytechnic University (now Polytechnic Institute of New York University) as Associate Professor.  

 I have over 100 publications (60 journal papers, two book chapters, 14 discussions in the IEEE Transactions, 41 conference papers and a few other publications). My papers have been cited over 380 times in journals listed in the Science Citation Index and over 950 times in Google Scholar. I have made 6 patent applications and have graduated 6 Ph.D., 21 M.Sc. and many B.Sc. students. In 2002 I was elevated to IEEE Senior Member. I am an Editor of the IEEE Transactions on Power Delivery since 2009 and Editor/Coordinator of the IEEE Power Engineering Letters since 2011.  

        My areas of greater teaching and research interest include the electromagnetic design and modeling of electrical machines, the analysis of power systems (transients and steady state), cable ampacity, and the definitions of power for nonlinear and unbalanced circuits.

Journal Articles

More details (including pdf files) at: http://power.poly.edu/deleon.html

 

(* indicates supervised student, ** indicates supervised student or visitor at Poly)

1) S. Jazebi**, F. de León, and B. Vahidi, “Duality-Synthesized Circuit for Eddy Current Effects in Transformer Windings”, accepted for publication in the IEEE Transactions on Power Delivery in December 2012.
2) F. de León, D. Czarkowski, V. Spitsa**, J. A. Martinez, T. Noda, R. Iravani, X. Wang, A. Davoudi, G. W. Chang, A. Mehrizi-Sani, and I. Kocar “Development of Data Translators for Interfacing Power-Flow Programs with EMTP-Type Programs: Challenges and Lessons Learned”, accepted for publication in the IEEE Transactions on Power Delivery in November 2012.
3) S. Jazebi**, A. Farazmand**, B. Murali**, F. de León, “A Comparative Study on  and T Equivalent Circuits for the Analysis of Transformer Ferroresonance”, IEEE Transactions on Power Delivery, Vol. 28, No. 1, January 2013, pp. 526-528.
4) P. Chen**, R. Salcedo**, Q. Zhu**, F. de León, D. Czarkowski, Z. P. Jiang, V. Spitsa**, Z. Zabar, and R. Uosef**, “Analysis of Voltage Profile Problems due to the Penetration of Distributed Generation in Low-Voltage Secondary Distribution Networks”, IEEE Transactions on Power Delivery, Vol. 27, No. 4, October 2012, pp. 2020-2028.
5) F. de León, A.  Farazmand**, and P. Joseph**, “Comparing the T and  Equivalent Circuits for the Calculation of Transformer Inrush Currents”, IEEE Transactions on Power Delivery, Vol. 27, No. 4, October 2012, pp. 2390-2398.
6) L. Yu**, S. Purushothaman**, P. Joseph**, B. Li**, T. Grawitz**, F. de León, D.  Czarkowski, J. Carbonara, D. Sciano, and M. Jolly, “Universal Controller for the Interconnection of Distributed Generators with Utility Lines at Customer Level Voltages”, International Journal of Power and Energy Systems, Vol. 32, No. 3, 2012, pp. 131-138.
7) L. Qaseer**, S. Purushothaman**, and F. de León, “Closed-Form Analysis of Squirrel-Cage Induction Motors With Anisotropic Modeling of Stator and Rotor”, IEEE Transactions on Energy Conversion, Vol. 27, No. 3, pp. 553-560, September 2012.
8) F. de León, Layth Qaseer**, and José Cohen*, “AC Power Theory from Poynting Theorem: Identification of the Power Components of Magnetic Saturating and Hysteretic Circuits”, IEEE Transactions on Power Delivery, Vol. 27, No. 3, July 2012, pp. 1548-1556.
9) M. Terracciano**, S. Purushothaman**, F. de León, and A. Farahani, “Thermal Analysis of Cables in Unfilled Troughs: Investigation of the IEC Standard and a Methodical Approach for Cable Rating”, IEEE Transactions on Power Delivery, Vol. 27, No. 3, pp. 1423-1431, July 2012.
10) L. Yu**, D. Czarkowski, and F. de León, “Optimal Distributed Control for Voltage Regulation of Distribution Systems with Distributed Generation Resources”, IEEE Transactions on Smart Grid, Vol. 3, No. 2, June 2012, pp. 959-967.
11) V. Spitsa**, X. Ran**, R. Salcedo**, J. Martinez, R. Uosef**, F. de León, D. Czarkowski, and Z. Zabar, “Three–Phase Time–Domain Analysis of Smart Grid Concepts for Very Large Distribution Networks”, IEEE Transactions on Smart Grid, Vol. 3, No. 2, June 2012, pp. 887-896.
12) S. Purushothaman** and F. de León, “Heat Transfer Model for Toroidal Transformers”, IEEE Transactions on Power Delivery, Vol. 27, No. 2, April 2012, pp. 813-820.
13) V. Spitsa**, R. Salcedo**, X. Ran**, J. Martinez, R. Uosef**, F. de León, D. Czarkowski, and Z. Zabar, “Three–Phase Time–Domain Simulation of Very Large Distribution Networks”, IEEE Transactions on Power Delivery, Vol. 27, No. 2, April 2012, pp. 677-687.
14) C. Álvarez-Mariño**, F. de León, and X. M. López-Fernández, “Equivalent Circuit for the Leakage Inductance of Multi-Winding Transformers: Unification of Terminal and Duality Models”, IEEE Transactions on Power Delivery, Vol. 27, No. 1, January 2012, pp. 353-361.
15) I. Hernández**, F. de León, and P. Gómez**, “Design Formulas for the Leakage Inductance of Toroidal Distribution Transformers”, IEEE Transactions on Power Delivery, Vol. 26, No. 4, October 2011, pp. 2197-2204.
16) L. Qaseer**, F. de León, and S. Purushothaman**, “Combined Field and Circuit Theories in Squirrel-Cage Induction Motors based on Micro-T Circuit Model”, Applied Computational Electromagnetics Society – ACES Journal, Vol. 26, No.7, July 2011, pp.551-560.
17) F. de León, Manuel Márquez-Asensio, and Gabriel Álvarez-Cordero, “Effects of Conductor Counter-Transposition on the Positive Sequence Impedance and Losses of Cross-Bonded Cables”, IEEE Transactions on Power Delivery, Vol. 26, No. 3, July 2011, pp. 2060-2063.
18) J. A. Martinez, F. de León, A. Mehrizi-Sani, M. H. Nehrir, C. Wang, and V. Dinavahi, “Tools for Analysis and Design of Distributed Resources. Part II: Tools for Planning, Analysis and Design of Distribution Networks with Distributed Resources”, IEEE Transactions on Power Delivery, Vol. 26, No. 3, July 2011, pp. 1653-1662.
19) B. Kovan**, F. de León, D. Czarkowski, Z. Zabar, and L. Birenbaum, “Mitigation of Inrush Currents in Network Transformers by Reducing the Residual Flux with an Ultra-Low-Frequency Power Source”, IEEE Transactions on Power Delivery, Vol. 26, No. 3, July 2011, pp. 1563-1570.
20) P. Gómez** and F. de León, “Accurate and Efficient Computation of the Inductance Matrix of Transformer Windings for the Simulation of Very Fast Transients”, IEEE Transactions on Power Delivery, Vol. 26, No. 3, July 2011, pp. 1423-1431.
21) P. Gómez**, F. de León, and I. Hernández**, “Impulse Response Analysis of Toroidal Core Distribution Transformers for Dielectric Design”, IEEE Transactions on Power Delivery, Vol. 26, No. 2, April 2011, pp. 1231-1238.
22) S. Purushothaman** and F. de Leon, “Eliminating Sub-Synchronous Oscillations with an Induction Machine Damping Unit (IMDU)”, IEEE Transactions on Power Systems, Vol. 26, No. 1, January 2011, pp. 225-232.
23) I. Hernández**, F. de León, J. M. Cañedo, and J. C. Olivares-Galván, “Modelling Transformer Core Joints using Gaussian Models for the Magnetic Flux Density and Permeability”, IET Electric Power Applications, Vol. 4, No. 9, November 2010, pp. 761–771.     
24) F. de León and J. Cohen*, “AC Power Theory from Poynting Theorem: Accurate Identification of Instantaneous Power Components in Nonlinear Switched Circuits”, IEEE Transactions on Power Delivery, Vol. 25, No. 4, October 2010, pp. 2104-2112.
25) J. C. Olivares-Galván, F. de León, P. S. Georgilakis, and R. Escarela-Pérez, “Selection of Copper versus Aluminum Windings for Distribution Transformers”, IET Electric Power Applications, Vol. 4, No. 6, July 2010, pp. 474–485.
26) M. Dilek, F. de León, R. Broadwater, and S. Lee, “A Robust Multi-phase Power Flow for General Distribution Networks”, IEEE Transactions on Power Systems, Vol. 25, No. 2, May 2010, pp. 760-768.
27) J. C. Olivares-Galvan, R. Escarela-Perez, F. de León, E. Campero-Littlewood, and C. Aviles Cruz, “Separation of Core Losses in Distribution Transformers using Experimental Methods”, (IEEE) Canadian Journal of Electrical and Computer Engineering, Vol. 35, No. 1, Winter 2010, pp. 33-39.
28) J. A. Martinez, F. de León, and V. Dinavahi, “Simulation Tools for Analysis and Design of Distribution Networks with Distributed Energy Resources”, Electrical Power and Utilisation Journal, Vol. XV, No.1, 2009, pp. 33-50. 
29) F. de León and J. A. Martinez, “Dual Three-Winding Transformer Equivalent Circuit Matching Leakage Measurements”, IEEE Transactions on Power Delivery, Vol. 24, No. 1, January 2009, pp. 160-168.
30) J. A. Peralta*, F. de León, and J. Mahseredjian, “Unbalanced Multiphase Load-Flow Using a Positive-Sequence Load-Flow Program”, IEEE Transactions on Power Systems, Vol. 23, No. 2, May 2008, pp. 469-476.
31) F. de León and G. Anders, “Effects of Backfilling on Cable Ampacity Analyzed with the Finite Element Method”, IEEE Transactions on Power Delivery, Vol. 23, No. 2, April 2008, pp. 537-543.
32) J. C. Olivares, R. Escarela, S. V. Kulkarni, F. de León, E. Melgoza, and O. Hernández, ”Improved Insert Geometry for Reducing Tank Wall Losses in Pad-Mounted Transformers”, IEEE Transactions on Power Delivery, Vol. 19, No. 3, July 2004, pp. 1120-1126.
33) J. C. Olivares, R. Escarela-Perez, S. V. Kulkarni, F. de León, M.A. Venegas-Vega, “2D finite-element determination of tank wall losses in pad-mounted transformers”, Electric Power Systems Research, Vol. 71, No. 2, October 2004, pp. 179–185.
34) F. de León and A. Semlyen, “Iterative Solvers in the Newton Power Flow Problem: Preconditioners, Inexact Solutions, and Partial Jacobian Updates”, IEE Proceedings on Generation, Transmission and Distribution, Volume 149, No. 4, July 2002, pp. 479-484.
35) A. Semlyen and F. de León, “Quasi-Newton Power Flow Using Partial Jacobian Updates”, IEEE Transactions on Power Systems, Vol. 16, No. 3, August 2001, pp. 332-339.
36) J. Cohen*, F. de León, and L. M. Hernandez, “Physical Time Domain Representation of Powers in Linear and Nonlinear Electrical Circuits”, IEEE Transactions on Power Delivery, Vol. 14, No. 4, October 1999, pp. 1240-1249.
37) F. de León and A. Semlyen, "A Simple Representation of Dynamic Hysteresis Losses in Power Transformers", IEEE Transactions on Power Delivery, Vol. 10, No. 1, January 1995, pp. 315-321.
38) A. Semlyen and F. de León, "Eddy Current Add-On for the Frequency Dependent Representation of Winding Losses in Transformer Models used in Computing Electromagnetic Transients," IEE Proceedings on Generation, Transmission and Distribution, Volume 141, No. 3, May 1994, pp. 209-214.
39) F. de León and A. Semlyen, "Detailed Modeling of Eddy Current Effects for Transformer Transients," IEEE Transactions on Power Delivery, Vol. 9, No. 2, April 1994, pp. 1143-1150.
40) F. de León and A. Semlyen, "Complete Transformer Model for Electromagnetic Transients," IEEE Transactions on Power Delivery, Vol. 9, No. 1, January 1994, pp. 231-239.
41) A. Semlyen and F. de León, "Computation of Electro-Magnetic Transients Using Dual or Multiple Time Steps", IEEE Transactions on Power Systems, Vol. 8, No. 3, August 1993, pp. 1274-1281.
42) F. de León and A. Semlyen, "Time Domain Modeling of Eddy Current Effects for Transformer Transients", IEEE Transactions on Power Delivery, Vol. 8, No. 1, January 1993, pp. 271-280.
43) F. de León and A. Semlyen, "Reduced Order Model for Transformer Transients", IEEE Transactions on Power Delivery, Vol. 7, No. 1, January 1992, pp. 361-369.
44) F. de León and A. Semlyen, "Efficient Calculation of Elementary Parameters of Transformers", IEEE Transactions on Power Delivery, Vol. 7, No. 1, January 1992, pp. 376-383.
 

 

 

Published Discussions

  1. F. de León and J. Cohen*, Discussion of “Instantaneous Reactive Power p-q Theory and Power properties of Three-Phase Systems”, IEEE Transactions on Power Delivery, Vol. 23, No. 3, July 2008, pp. 1693-1694.
  2. F. de León, Discussion of “Transformer Modeling for Low- and Mid-Frequency Transients-A Review”, IEEE Transactions on Power Delivery, Vol. 23, No. 3, July 2008, pp. 1696-1697.
  3. F. de León and J. Cohen*, Discussion of “Could Power Properties of Three-Phase Systems Be Described in Terms of the Poynting Vector?”, IEEE Transactions on Power Delivery, Vol. 22, No. 2, April 2007, pp. 1265-1266.
  4. F. de León and J. Cohen*, Discussion of “Generalized Theory of Instantaneous Reactive Quantity for Multiphase Power System”, IEEE Transactions on Power Delivery, Vol. 21, No. 1, January 2006, pp. 540-541.
  5. F. de León, Discussion of"A New Preconditioned Conjugate Gradient Power Flow", IEEE Transactions on Power Systems, Vol. 18, No. 4, November 2003, p. 1601.
  6. J. C. Olivares and F. de León, Discussion of “Proposed Standards for Frequency Conversion Factors of Transformer Performance Parameters”, IEEE Transactions on Power Delivery, Vol. 18, No. 4, October 2003, p. 1599.
  7. F. de León and J. Cohen*, Discussion of “An Evaluation of Some Alternative Methods of Power Resolution in a Large Industrial Plant”, IEEE Transactions on Power Delivery, Vol. 18, No. 2, April 2003, pp. 658-659.
  8. F. de León, Discussion of “Accurate Modeling of Core-Type Distribution Transformers for Electromagnetic Transient Studies”, IEEE Transactions on Power Delivery, Vol. 18, No. 2, April 2003, p. 640.
  9. F. de León, Discussion of “A Time-Domain Approach to Transmission Network Equivalents Via Prony Analysis for Electromagnetic Transient Analysis”, IEEE Transactions on Power Systems, Vol. 10 No. 4, November 1995, p.1797. 
  10. F. de León, Discussion of “Simplified Three-Phase Transformer Model for Electromagnetic Transient Studies”, IEEE Transactions of Power Delivery, Vol. 10, No. 3, July 1995, p.1324.
  11. F. de León and C. Fuerte*, Discussion of “Multi-port Equivalencing of External Systems for Simulation of Switching Transients”, IEEE Transactions on Power Delivery, Vol. 10, No. 1, January 1995, p. 381.
  12. F. de León, Discussion of “A Method for Modeling Nonlinear Core Characteristics of Transformers during Transients”, IEEE Transactions of Power Delivery, Vol. 9, No. 4, October 1994, p.1923-1924.
  13. A. Semlyen and F. de León, Discussion of “Transient Simulation and Analysis of a Three-Phase Five-Limb Step-up Transformer Following an Out-Of-Phase Synchronization”, IEEE Transactions on Power Delivery, Vol. 6, No. 1, January 1991, p.204.
  14. F. de León, Discussion of “Multi-Winding Multi-Phase Transformer Model with Saturable Core”, IEEE Transactions on Power Delivery, Vol. 6, No. 1, January 1991, p.173.

 

Other Publications

More details (including pdf files) at: http://power.poly.edu/deleon.html

  1. J. A. Martinez-Velascoand F. de León, “Equivalent circuit of a regulating transformer”, Ingeniare. Revista chilena de ingeniería, Vol. 19, No.1, 2011, pp. 93-109.
  2. C. Kwok, F. de León, and A. S. Morched, “Survey of Studies and Analysis Tools Used for Assessment of Distributed Generation Integration in Canadian Systems”, Report # 2006-070 (CONT-SPI), CANMENT Energy Technology Centre – Varennes, Natural Resources Canada, April 2006, 48 pp.
  3. F. de León, “Calculation of Underground Cable Ampacity”, Wire and Cable Handbook, Vol. 1, The Electricity Forum, 2005.

Conference Papers

  1. F. de León, “Smart Grid Applications: Viewpoint of an Electrical Power Engineer”, Invited Conference presented at the DIMACS Workshop on Algorithmic Decision Theory for the Smart Grid at the Center for Discrete Mathematics and Theoretical Computer Science (DIMACS), Rutgers University, NJ, October 25-27, 2010.
  2. J. A. Martinez, F. de León, and V. Dinavahi “Tools for Analysis of Distribution Systems with Distributed Resources. Present and Future Trends”, paper No. 978-1-4244-6551-4 presented at the 2010 IEEE/PES General Meeting, Minneapolis, MN, July 25-29, 2010.
  3. F. de León, “Active Damping of Power System Oscillations by Unidirectional Control of Distributed Generation Plants”, Invited Conference presented at the 2009 Advanced Energy Conference, Brookhaven National Laboratory, Stony Brook, NY, November 18-19, 2009.
  4. F. de León and J. A. Martinez, “Dual Three-Winding Transformer Equivalent Circuit Matching Leakage Measurements”, paper presented at the 2009 IEEE/PES General Meeting, Calgary, Alberta, Canada, July 26-30, 2009. This paper is printed now in the IEEE Transactions on Power Delivery.
  5. F. de Leon, “Ampacity Calculations: Most Frequently Asked Questions”, Invited Conference presented as part of the Educational Program of the Spring IEEE/PES-ICC Meeting, Orlando, Florida, May 6-9, 2007.
  6. F. de Leon, “Major Factors Affecting Cable Ampacity”, paper ID: 06GM0041, presented at the 2006 IEEE/PES General Meeting, June 18-22, 2006, Montreal, Quebec, Canada.
  7. F. de Leon, P. St-Roch and C. Beauregard, “Cable Historical Operating Temperature Estimator” paper presented at the North American Transmission & Distribution Conference & Expo, June 13-15, 2006, Montreal, Canada.
  8. F. de Leon and J. Cohen, “A Practical Approach to Power Factor Definitions: Transmission Losses, Reactive Power Compensation, and Machine Utilization”, paper ID 06GM0565, presented at the 2006 IEEE/PES General Meeting, June 18-22, 2006, Montreal, Quebec, Canada.
  9. F. de Leon and S. Magdaleno, “Finite Element Analysis of the Virtual Gap Technology: Controlling the Magnetizing Curve” presented at the RVP-AI/2005, paper number TRO-01, July 2005, Acapulco Mexico.
  10. C. Parra and F. de León, “Digital Simulation of Inrush Currents in Transformers”, presented at the RVP-AI/2003, paper number TRO-12, July 2003, Acapulco Mexico.
  11. F. de León and J. Cohen, “Inconsistencies with the Power and Power Factor Definitions for Nonlinear and/or Unbalanced Circuits. Is the New IEEE 1459-2000 Standard the Solution?”, presented at the RVP-AI’02, paper number SIS-23, July 2002, Acapulco, Mexico.
  12. F. de León, B. Gladstone, and M. van der Veen, “Transformer-Based Solutions to Power Quality Problems”, presented at the Fourth International 2001 Power Quality Conference, Rosemont, Illinois, September 9 to 13, 2001, pp. 303-314.
  13. M. van der Veen and F. de León, “Narrow Bandwidth Transformers (NBT): A New Power Quality Technology”, presented at the Fourth International 2001 Power Quality Conference, Rosemont, Illinois, September 9 to 13, 2001, pp. 754-758.
  14. F. de León and B.T. Ooi, “Damping Power System Oscillations by Unidirectional Control of Alternative Power Generation Plants”, paper presented at the 2001 IEEE/PES Winter Meeting (Columbus Ohio, February 1st, 2001.
  15. M. van der Veen, F. de León, B. Gladstone, and V. Tatu, “Measuring and Quantifying Acoustic Noise in Power Transformers in Audio and Video Equipment”, presented at The Audio Engineering Society 109th Convention en Los Angeles, September 22-25, 2000.
  16. F. Ceballos and F. de León, "Electromagnetic Transients Due to Load Rejection in Electric Power Systems” (In Spanish), paper number RVP'98-SIS-09 presented at the Reunión de Verano de Potencia, July 1998 in Acapulco Guerrero - IEEE Region Mexico, pp. 228-235.
  17. J. Martinez-Perez and F. de León, "Computation of the Leakage Inductance in Power Transformers using Finite Differences” (In Spanish), paper number RVP'98-TRO-01 presented at the Reunión de Verano de Potencia, July 1998 in Acapulco Guerrero - IEEE Region Mexico, pp. 278-283.
  18. Cohen, J., Hernández, L., De León, F., “On the non-physical existence of Harmonics”, en el 2nd. International Congress on Research in Electrical and Electronics Engineering, Instituto Tecnológico de Aguascalientes, México, 1998.
  19. F. Camacho and F. de León, "Origins of Magnetism and Magnetization from Domains Theory” (In Spanish), paper number RVP'97-EDU-09 presented at the Reunión de Verano de Potencia, July 1997 in Acapulco Guerrero - IEEE Region Mexico, pp. 49-56.
  20. J. Martinez-Perez and F. de León, "Computation of the Electromagnetic Field inside of a Power Transformer: Derivation of the Design Formulae” (In Spanish), paper number RVP'97-TRO-09 presented at the Reunión de Verano de Potencia, July 1997 in Acapulco Guerrero - IEEE Region Mexico, pp. 199-204.
  21. J. Martinez-Perez and F. de León, “Using Mathematica® for Teaching Electromagnetics” (In Spanish), paper number RVP'96-EDU-04 presented at the Reunión de Verano de Potencia, July 1996 in Acapulco Guerrero - IEEE Region Mexico, pp. 199-204.
  22. F. de León, “Professional Actualization of the Electrical Engineer: Current Conditions and Future Perspectives”, Reunión de Verano de Potencia (RVP’96), Invited Conference, Acapulco, 1996.
  23. R. Adame O. and F. de León, “Accurate and Efficient Calculation of Cable Parameters Using Mathematica®” (In Spanish), paper presented at the II Jornadas Latinoamericanas en Alta Tensión y Aislamiento Eléctrico ALTAE’96, October 8-11, 1996, Instituto Tecnológico de Morelia, Michoacán, México, pp. 95-101.
  24. C. Fuerte and F. De León, “Determination of the Maximum Modeling Region for the Study of Electromagnetic Transients in Power Systems”, Primeras Jornadas Latinoamericanas en Alta Tensión y Aislamiento Eléctrico, ALTAE, Invited Conference, Barquisimeto Venezuela, 1995.
  25. F. de León, A. Calva, J. Fuentes, y G. Enríquez, “Current State of the High Voltaje Enfgineering in Mexico”, Primeras Jornadas Latinoamericanas en Alta Tensión y Aislamiento Eléctrico, ALTAE, Invited Magisterial Conference, Barquisimeto Venezuela, 1995.
  26. F. de León, “Computation of Electromagnetic Transients in Power Systems using the EMTP”, Reunión de Verano de Potencia (RVP’95), Invited Conference, Acapulco Guerrero, 1995.
  27. E. Bernal-Luna and F. de León, "Analysis of the Electromagnetic Field Inside of an Induction Motor” (In Spanish), paper number RVP'94-GEN-12 presented at the Reunión de Verano de Potencia, July 1994 in Acapulco Guerrero - IEEE Region Mexico, Volume IV, pp. 80-87.
  28. C.R. Fuerte, R.O. Mota, and F. de León, "Representation of the Electric Power System for Electromagnetic Transients Studies" (In Spanish), paper number RVP'93-SIS-08 presented at the Reunión de Verano de Potencia, July 1993, Acapulco Guerrero- IEEE Region Mexico, pp. 87-98.
  29. F. de León and A. Semlyen, "Modeling of Leakage Fields and Inductances of Transformers Using an Image Conductor Method," paper presented in The Fourth Biennial IEEE Conference on Electromagnetic Field Computation, Toronto, Ontario, October 22 to 24, 1990.
  30. J. Avila-Rosales and F. de León, "Influence of the Frequency Dependence on the No-load Losses in Transformers” (In Spanish), LATINCON 86, Panama City, IEEE Region 9.
  31. J. Avila-Rosales and F. de León, "Effects of the Frequency Dependence of the Transformer Iron-Core Parameters on Magnetizing Currents Chopping” (In Spanish), MEXICON 86, Guadalajara Jalisco - IEEE Region Mexico.
  32. J. Avila-Rosales, F. de León, and R. Villafuerte, "State Space Modeling of Transmission Lines with Distributed Parameters for Electromagnetic Transients” (In Spanish), MEXICON 86 - IEEE Mexico.

Education

University of Toronto, Class of 1992

Doctor of Philosophy, Electrical Engineering

Instituto Politécnico Nacional, IPN, Class of 1986

Master of Science, Electrical Engineering

Instituto Politécnico Nacional, IPN, Class of 1983

Bachelor of Science, Electrical Engineering

Authored + Edited Books

F. de León, P. Gomez**, J. A. Martinez, and M. Rioual, Chapter 4 “Transformers” of the book “Power System Transients: Parameter Determination”, CRC Press 2010, pp. 177-249, ISBN:  978-1-4200-6529-9.

Research Interests

My areas of greater teaching and research interest include the transient and steady-state analyses of power systems, the analysis of power definitions under nonsinusoidal conditions, the thermal rating of cables and transformers, and the calculation of electromagnetic fields applied to machine design and modeling.