Journals and Discussions

Journals (* indicates supervised student or visitor)

  1. M. Diaz-Aguiló* and F. de León, “Adaptive Soil Model for Real-Time Thermal Rating of Underground Power Cables”, accepted for publication in IET Science, Measurement & Technology.
  2. F. de León, S. Jazebi*, A. Farazmand*, and R. Levi, “Elimination of Residual Flux in Transformers by the Application of an Alternating Polarity DC Voltage Source”, accepted for publication in the IEEE Transactions on Power Delivery.
  3. I. Baker* and F. de León, “An Equivalent Circuit for the Thermal Analysis of Cables in Non-Vented Vertical Risers”, accepted for publication in IET Science, Measurement & Technology.
  4. R. Hardowar*, S. Rodriguez, R. E. Uosef*, F. de León, and D. Czarkowski, “Prioritizing the Restoration of Network Transformers using Distribution System Loading and Reliability Indices”, accepted for publication in the IEEE Transactions on Power Delivery.
  5. M. Diaz-Aguiló*, S. Jazebi*, and F. de León, “Ladder-type Soil Model for Dynamic Thermal Rating Applicable to Real-Time Operation of Underground Power Cables”, accepted on 20 October 2014 for publication in the IEEE Power and Energy Technology Systems Journal.
  6. S. Jazebi* and F. de León, “Experimentally Validated Reversible Multi-Winding Transformer Model for the Accurate Calculation of Low-Frequency Transients”, accepted for publication in the IEEE Transactions on Power Delivery.
  7. A. Sedaghat* and F. de León, “Thermal Analysis of Power Cables in Free Air:  Evaluation and Improvement of the IEC Standard Ampacity Calculations”, IEEE Transactions on Power Delivery, Vol. 29, No. 5, October 2014, pp. 2306-2314.
  8. M. Lambert, M. Martínez-Duró, J. Mahseredjian, F. de León, and F. Sirois, “Transformer Leakage Flux Models for Electromagnetic Transients: Critical Review and Validation of a New Model”, IEEE Transactions on Power Delivery, Vol. 29, No. 5, October 2014, pp. 2180-2188.
  9. P. Gómez, F. de León, and F. P. Espino-Cortés, Improved Computation of Core Inductance for Fast Transient Analysis of Transformers, IEEE Transactions on Power Delivery, Vol. 29, No. 4, August 2014, pp. 2034-2036.
  10. J. Sandraz*, R. Macwan*, M. Diaz-Aguiló*, J. McClelland, F. de León, D. Czarkowski, and  C. Comack, “Energy and Economic Impacts of the Application of CVR in Heavily-Meshed Secondary Distribution Networks”, IEEE Transaction on Power Delivery, Vol. 29, No. 4, August 2014, pp. 1692-1700.
  11. A. Farazmand*, F. de León, K. Zhang*, and S. Jazebi*, “Analysis, Modeling and Simulation of the Phase-Hop Condition in Transformers: The Largest Inrush Currents”, IEEE Transaction on Power Delivery, Vol. 29, No. 4, August 2014, pp. 1918-1926.
  12. S. Purushothaman*, F. de León, and M. Terracciano*, “Calculation of Cable Thermal Rating Considering Non-Isothermal Earth Surface”, IET Generation, Transmission & Distribution, 2014 Vol. 8, No. 7, pp. 1354-1361.
  13. A. Bokhari*, A. Alkan*, A. Sharma*, R. Dogan*, M. Diaz Aguiló*, F. de León, D. Czarkowski, Z. Zabar, L. Birenbaum, A. Noel, and R. Uosef*, ”Experimental Determination of the ZIP Coefficients for Modern Residential, Commercial and Industrial Loads”, IEEE Transactions on Power Delivery, Vol. 29, No. 3, June 2014, pp. 1372-1381.
  14. F. de León, S. Jazebi*, and A. Farazmand*, “Accurate Measurement of the Air-Core Inductance of Iron-Core Transformers with a Non-Ideal Low-Power Rectifier”, IEEE Transaction on Power Delivery, Vol. 29, No. 1, February 2014, pp. 294-296.
  15. F. de León, S. Purushothaman*, and L. Qaseer*, “Leakage Inductance Design of Toroidal Transformers by Sector Winding”, IEEE Transactions on Power Electronics, Vol. 29, No. 1, January 2014, pp. 473-480.
  16. F. de León and S. Purushothaman*, “Closed Form Computation of Electromagnetic Fields in Induction Motors”, International Journal of Power and Energy Systems, Vol. 33, No. 2, 2013, pp. 62-70.
  17. S. Jazebi*, F. de León, A.  Farazmand*, and D. Deswal*, “Dual Reversible Transformer Model for the Calculation of Low-Frequency Transients”, IEEE Transactions on Power Delivery, Vol. 28, No. 4, October 2013, pp. 2509-2517.
  18. R. Salcedo*, X. Ran*, F. de León, D. Czarkowski, and V. Spitsa, “Long Duration Overvoltages due to Current Backfeeding in Secondary Networks”, IEEE Transactions on Power Delivery, Vol. 28, No. 4, October 2013, pp. 2500-2508.
  19. M. Diaz Aguiló*, J. Sandraz*, R. Macwan*, F. de León, D. Czarkowski, C. Comack, and D. Wang, “Field Validated Load Model for the Analysis of CVR in Distribution Secondary Networks: Energy Conservation”, IEEE Transactions on Power Delivery, Vol. 28, No. 4, October 2013, pp. 2428-2436.
  20. P. Moghe* and F. de León, Parametric Study of Losses in Cross Bonded Cables: Conductors Transposed versus Conductors Non-Transposed”, IEEE Transactions on Power Delivery, Vol. 28, No. 4, October 2013, pp. 2273-2281.
  21. J. Sandraz*, F. de León, and J. Cultrera, “Validated Transient Heat Transfer Model of Underground Transformer in Rectangular Vaults”, IEEE Transactions on Power Delivery, Vol. 28, No. 3, July 2013, pp. 1770-1778.
  22. S. Jazebi*, F. de León, and B. Vahidi, Duality-Synthesized Circuit for Eddy Current Effects in Transformer Windings”, IEEE Transactions on Power Delivery, Vol. 28, No. 2, April 2013, pp. 1063-1072.
  23. P. Gómez*, F. de León,  and F. P. Espino-Cortés, “Improvement of a Method to Compute the Inductance Matrix of Multilayer Transformer Windings For Very Fast Transients”,IEEE Transactions on Power Delivery, Vol. 28, No. 2, April 2013, pp. 1245-1246.
  24. 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”,IEEE Transactions on Power Delivery, Vol. 28, No. 2, April 2013, pp. 1192-1201.
  25. S. Jazebi*, A. Farazmand*, B. Murali*, F. de León, “A Comparative Study on pi and T Equivalent Circuits for the Analysis of Transformer Ferroresonance”,  IEEE Transactions on Power Delivery, Vol. 28, No. 1, January 2013, pp. 526-528.
  26. 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.
  27. F. de León, A.  Farazmand*, and P. Joseph*, “Comparing the T and pi Equivalent Circuits for the Calculation of Transformer Inrush Currents”, IEEE Transactions on Power Delivery, Vol. 27, No. 4, October 2012, pp. 2390-2398.
  28. 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.
  29. 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.
  30. F. de León, Layth Qaseer*, and J. 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.
  31. 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.
  32. 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.
  33. V. Spitsa*, X. Ran*, R. Salcedo*, J. Martinez, R. Uosef*, F. de León, D. Czarkowski, and Z. Zabar, “On the Transient Behavior of Large-Scale Distribution Networks during Automatic Feeder Reconfiguration”, IEEE Transactions on Smart Grid, Vol. 3, No. 2, June 2012, pp. 887-896.
  34. S. Purushothaman* and F. de León, “Heat Transfer Model for Toroidal Transformers”, Transactions on Power Delivery, Vol. 27, No. 2, April 2012, pp. 813-820.
  35. 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.
  36. 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.
  37. 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.
  38. 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.
  39. 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.
  40. J. A. Martinez-Velasco and F. de León, “Equivalent circuit of a regulating transformer”, Ingeniare. Revista chilena de ingeniería, Vol. 19, No.1, 2011, pp. 93-109.
  41. 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.
  42. 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.
  43. 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.
  44. 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.
  45. S. Purushothaman* and F. de León, “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.
  46. 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.
  47. 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.
  48. 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.
  49. 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.
  50. 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.
  51. 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.
  52. 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.
  53. 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.
  54. 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.
  55. 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.
  56. 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.
  57. 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.
  58. 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.
  59. 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.
  60. 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.
  61. 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.
  62. 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.
  63. 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.
  64. 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.
  65. 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.
  66. 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.
  67. 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.