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Journal Papers

2024

  1. Martín Medina-Sánchez, Alejandro G. Yepes, Óscar López & Jesús Doval-Gandoy, "A generalized overmodulation strategy with minimum current distortion for symmetrical and asymmetrical multiphase induction motor drives", IEEE Transactions on Power Electronics, vol. 39, no. 6, pp. 6552-6567, June 2024. [doi]

2023

  1. Óscar López, Tomáš Komrska, Jacobo Álvarez, Lukáš Adam, Alejandro G. Yepes, Martín Medina-Sánchez & Jesús Doval-Gandoy, "Post-fault operation strategy for cascaded H-bridge inverters driving a multiphase motor", IEEE Transactions on Industrial Electronics, vol. PP, 2023. [doi]
  2. Martín Medina-Sánchez, Alejandro G. Yepes, Óscar López & Jesús Doval-Gandoy, "Assessment and exploitation of the minimum current harmonic distortion under overmodulation in five-phase induction motor drives", IEEE Transactions on Power Electronics, vol. 38, no. 4, pp. 4289-4305, April 2023. [doi]
  3. Martín Medina-Sánchez, Alejandro G. Yepes, Óscar López, Ayman Samy Abdel-Khalik & Jesús Doval-Gandoy, "A carrier-based overmodulation strategy with minimum voltage distortion for symmetrical n-phase induction motor drives", IEEE Transactions on Power Electronics, vol. 38, no. 12, pp. 15055-15071, December 2023. [doi]
  4. Alejandro G. Yepes, Davide S. B. Fonseca, Hugo R. P. Antunes, Óscar López, Antonio J. Marques Cardoso & Jesús Doval-Gandoy, "Discrimination between eccentricity and interturn faults using current or voltage-reference signature analysis in symmetrical six-phase induction machines", IEEE Transactions on Power Electronics, vol. 38, pp. 2421-2434, February 2023. [doi]

2022

  1. Alejandro G. Yepes, Óscar López, Ignacio González-Prieto, Mario J. Durán & Jesús Doval-Gandoy, "A comprehensive survey on fault tolerance in multiphase AC drives, Part 1: general overview considering multiple fault types", Machines, vol. 10, no. 3, pp. 208, March 2022. [doi]
  2. Alejandro G. Yepes, Ignacio González-Prieto, Óscar López, Mario J. Durán & Jesús Doval-Gandoy, "A comprehensive survey on fault tolerance in multiphase AC drives, Part 2: phase and switch open-circuit faults", Machines, vol. 10, no. 3, pp. 221, March 2022. [doi]

2020

  1. Óscar López, Jacobo Álvarez, Alejandro G. Yepes, Fernando Baneira, Diego Pérez-Estévez, Francisco D. Freijedo & Jesús Doval-Gandoy, "Carrier-based PWM equivalent to multilevel multiphase space vector PWM techniques", IEEE Transactions on Industrial Electronics, vol. 67, no. 7, pp. 5220-5231, July 2020. [doi]
  2. Fernando Baneira, Jesús Doval-Gandoy, Alejandro G. Yepes & Óscar López, "DC-current injection with minimum torque ripple in interior permanent-magnet synchronous motors", IEEE Transactions on Power Electronics, vol. 35, no. 2, pp. 1176-1181, February 2020. [doi]

2018

  1. Diego Pérez-Estévez, Jesús Doval-Gandoy, Alejandro G. Yepes, Oscar López & Fernando Baneira, "Generalized Multi-Frequency Current Controller for Grid-Connected Converters With LCL Filter", IEEE Transactions on Industry Applications, vol. 54, no. 5, pp. 4537-4553, September 2018. [doi]
  2. Diego Pérez-Estévez, Jesús Doval-Gandoy, Alejandro G. Yepes, Óscar López & Fernando Baneira, "Enhanced resonant current controller for grid-connected converters with LCL filter", IEEE Transactions on Power Electronics, vol. 33, no. 5, pp. 3765-3778, May 2018. [doi]

2017

  1. Alejandro G. Yepes, Jesús Doval-Gandoy, Fernando Baneira, Diego Pérez-Estévez & Oscar López, "Current harmonic compensation for n-phase machines with asymmetrical winding arrangement and different neutral configurations", IEEE Transactions on Industry Applications, vol. 53, no. 6, pp. 5426-5439, November 2017. [doi]
  2. Fernando Baneira, Jesús Doval-Gandoy, Alejandro G. Yepes, Óscar López & Diego Pérez-Estévez, "Control strategy for multiphase drives with minimum losses in the full torque operation range under single open-phase fault", IEEE Transactions on Power Electronics, vol. 32, no. 8, pp. 6275-6285, August 2017. [doi]
  3. Fernando Baneira, Jesús Doval-Gandoy, Alejandro G. Yepes, Óscar López & Diego Pérez-Estévez, "Comparison of postfault strategies for current reference generation for dual three-phase machines in terms of converter losses", IEEE Transactions on Power Electronics, vol. 32, no. 11, pp. 8243-8246, November 2017. [doi]
  4. Diego Pérez-Estévez, Jesús Doval-Gandoy, Alejandro G. Yepes & Óscar López, "Positive- and negative-sequence current controller with direct discrete-time pole placement for grid-tied converters with LCL filter", IEEE Transactions on Power Electronics, vol. 32, no. 9, pp. 7207-7221, September 2017. [doi]

2016

  1. Alejandro G. Yepes, Fernando Baneira, Jano Malvar, Ana Vidal, Diego Pérez-Estévez, Óscar López & Jesús Doval-Gandoy, "Selection criteria of multiphase induction machines for speed-sensorless drives based on rotor slot harmonics", IEEE Transactions on Industrial Electronics, vol. 63, no. 8, pp. 4663-4673, August 2016. [doi]
  2. Fernando Baneira, Alejandro G. Yepes, Óscar López & Jesús Doval-Gandoy, "Estimation method of stator winding temperature for dual three-phase machines based on dc-signal injection", IEEE Transactions on Power Electronics, vol. 31, no. 7, pp. 5141-5148, July 2016. [doi]
  3. Óscar López, Jacobo Álvarez, Jano Malvar, Alejandro G. Yepes, Ana Vidal, Fernando Baneira, Diego Pérez-Estévez, Francisco Freijedo & Jesús Doval-Gandoy, "Space vector PWM with common-mode voltage elimination for multiphase drives", IEEE Transactions on Power Electronics, vol. 31, no. 12, pp. 8151-8161, December 2016. [doi]

2015

  1. Francisco D. Freijedo, Ana Vidal, Alejandro G. Yepes, Josep M. Guerrero, Óscar López, Jano Malvar & Jesús Doval-Gandoy, "Tuning of synchronous-frame PI current controllers in grid-connected converters operating at a low sampling rate by MIMO root locus", IEEE Transactions on Industrial Electronics, vol. 62, no. 8, pp. 5006-5017, August 2015. [doi]
  2. Alejandro G. Yepes, Jano Malvar, Ana Vidal, Óscar López & Jesús Doval-Gandoy, "Current harmonics compensation based on multi-resonant control in synchronous frames for symmetrical n-phase machines", IEEE Transactions on Industrial Electronics, vol. 62, no. 5, pp. 2708-2720, May 2015. [doi]
  3. Ana Vidal, Alejandro G. Yepes, Francisco D. Freijedo, Jano Malvar, Óscar López & Jesús Doval-Gandoy, "A technique to estimate the equivalent loss resistance of grid-tied converters for current control analysis and design", IEEE Transactions on Power Electronics, vol. 3, no. 3, pp. 1747-1761, March 2015. [doi]
  4. Ana Vidal, Alejandro G. Yepes, Francisco D. Freijedo, Óscar López, Jano Malvar, Francisco Baneira & Jesús Doval-Gandoy, "A method for identification of the equivalent inductance and resistance in the plant model of current-controlled grid-tied converters", IEEE Transactions on Power Electronics, vol. 30, no. 12, pp. 7245-7261, December 2015. [doi]

2014

  1. Jano Malvar, Óscar López, Alejandro G. Yepes, Ana Vidal, Francisco D. Freijedo, Pablo Fernández-Comesaña & Jesús Doval-Gandoy, "Graphical diagram for subspace and sequence identification of time harmonics in symmetrical multiphase machines", IEEE Transactions on Industrial Electronics, vol. 61, no. 1, pp. 29-42, January 2014. [doi]
  2. Alejandro G. Yepes, Ana Vidal, Óscar López & Jesús Doval-Gandoy, "Evaluation of techniques for cross-coupling decoupling between orthogonal axes in double synchronous reference frame current control", IEEE Transactions on Industrial Electronics, vol. 61, no. 7, pp. 3527-3531, July 2014. [doi]
  3. Alejandro G. Yepes, Ana Vidal, Jano Malvar, Óscar López & Jesús Doval-Gandoy, "Tuning method aimed at optimized settling time and overshoot for synchronous proportional-integral current control in electric machines", IEEE Transactions on Power Electronics, vol. 29, no. 6, pp. 3041-3054, July 2014. [doi]
  4. Ana Vidal, Francisco D. Freijedo, Alejandro G. Yepes, Jano Malvar, Óscar López & Jesús Doval-Gandoy, "Transient response evaluation of stationary-frame resonant current controllers for grid-connected applications", IET Power Electronics, vol. 7, no. 7, pp. 1714-1724, July 2014. [doi]

2013

  1. Ana Vidal, Francisco D. Freijedo, Alejandro G. Yepes, Pablo Fernández-Comesaña, Jano Malvar, Óscar López & Jesús Doval, "Assessment and optimization of the transient response of proportional-resonant current controllers for distributed power generation systems", IEEE Transactions on Industrial Electronics, vol. 60, no. 4, pp. 1367-1383, April 2013. [doi]

2012

  1. Pablo Fernández-Comesaña, Francisco D. Freijedo, Jesús Doval, Óscar López, Alejandro G. Yepes & Jano Malvar, "Mitigation of voltage sags, imbalances and harmonics in sensitive industrial loads by means of a series power line conditioner", Electric Power Systems Research, vol. 84, pp. 20-30, March 2012. [doi]
  2. Jose A. Riveros, Alejandro G. Yepes, Federico Barrero, Jesús Doval-Gandoy, Blas Bogado, Óscar López, Martin Jones & Emil Levi, "Parameter identification of multiphase induction machines with distributed windings – Part 2: Time domain techniques", IEEE Transactions on Energy Conversion, vol. 27, no. 4, pp. 1067-1077, December 2012. [doi]
  3. Alejandro G. Yepes, Jose A. Riveros, Jesús Doval-Gandoy, Federico Barrero, Óscar López, Blas Bogado, Martin Jones & Emil Levi, "Parameter identification of multiphase induction machines with distributed windings – Part 1: Sinusoidal excitation methods", IEEE Transactions on Energy Conversion, vol. 27, no. 4, pp. 1056-1066, December 2012. [doi]
  4. Alejandro G. Yepes, Francisco D. Freijedo, Óscar López & Jesús Doval, "Correction to “High performance digital resonant controllers implemented with two integrators”", IEEE Transactions on Power Electronics, vol. 27, no. 10, pp. 4357, October 2012. [doi]
  5. Alejandro G. Yepes, Francisco D. Freijedo, Jesús Doval-Gandoy, Óscar López, Jano Malvar & Pablo Fernández-Comesaña, "Correction to “Effects of discretization methods on the performance of resonant controllers”", IEEE Transactions on Power Electronics, vol. 27, no. 12, pp. 4976, December 2012. [doi]

2011

  1. Alfonso Lago, Carlos Martínez-Peñalver, Jorge Marcos, Jesús Doval-Gandoy, Andrés Nogueiras, Óscar López, Francisco D. Freijedo, José Manuel Vilas & José Carlos Lorenzo, "Electrical design automation of a twisted pair to optimize the manufacturing process", IEEE Transactions on Components, Packaging and Manufacturing Technology, vol. 8, no. 1, pp. 1269-1281, August 2011. [doi]
  2. Jacobo Álvarez, Óscar López, Francisco D. Freijedo & Jesús Doval-Gandoy, "Digital parameterizable VHDL module for multilevel multiphase space vector PWM", IEEE Transactions on Industrial Electronics, vol. 58, no. 11, pp. 3946-3957, September 2011. [doi]
  3. Óscar López, Drazen Dujic, Martin Jones, Francisco D. Freijedo, Jesús Doval-Gandoy & Emil Levi, "Multidimensional two-level multiphase space vector PWM algorithm and its comparison with multifrequency space vector PWM method", IEEE Transactions on Industrial Electronics, vol. 58, no. 2, pp. 465-475, February 2011. [doi]
  4. Alejandro G. Yepes, Francisco D. Freijedo, Óscar López & Jesús Doval-Gandoy, "Analysis and design of resonant current controllers for voltage source converters by means of Nyquist diagrams and sensitivity function", IEEE Transactions on Industrial Electronics, vol. 58, no. 11, pp. 5231-5250, November 2011. [doi]
  5. Francisco D. Freijedo, Alejandro G. Yepes, Óscar López, Pablo Fernández-Comesaña & Jesús Doval-Gandoy, "An optimized implementation of phase locked loops for grid applications", IEEE Transactions on Instrumentation & Measurement, vol. 60, no. 9, pp. 3110-3119, September 2011. [doi]
  6. Francisco D. Freijedo, Alejandro G. Yepes, Óscar López, Ana Vidal & Jesús Doval-Gandoy, "Three-phase PLLs with fast post-fault re-tracking and steady-state rejection of voltage unbalance and harmonics by means of lead compensation", IEEE Transactions on Power Electronics, vol. 26, no. 1, pp. 85-97, January 2011. [doi]
  7. Alejandro G. Yepes, Francisco D. Freijedo, Óscar López & Jesús Doval-Gandoy, "High performance digital resonant controllers implemented with two integrators", IEEE Transactions on Power Electronics, vol. 26, no. 2, pp. 563-576, February 2011. [doi]
  8. Francisco D. Freijedo, Alejandro G. Yepes, Jano Malvar, Óscar López, Pablo Fernández-Comesaña, Ana Vidal & Jesús Doval, "Frequency tracking of resonant filters for control of power converters connected to public distribution systems", IET Power Electronics, vol. 4, no. 4, pp. 454-462, April 2011. [doi]

2010

  1. Alejandro G. Yepes, Francisco D. Freijedo, Jesús Doval-Gandoy, Óscar López, Pablo Fernández-Comesaña & Jano Malvar, "Harmonic identification algorithms based on DCT for power quality applications", ETRI Journal, vol. 32, no. 1, pp. 33-43, February 2010. [doi]
  2. Óscar López, Francisco D. Freijedo, Alejandro G. Yepes, Pablo Fernández-Comesaña, Jano Malvar, Remus Teodorescu & Jesús Doval-Gandoy, "Eliminating ground current in a transformerless photovoltaic application", IEEE Transactions on Energy Conversion, vol. 25, no. 1, pp. 140-147, March 2010. [doi]
  3. José Ignacio León, Óscar López, Leopoldo García Franquelo, Jesús Doval-Gandoy, Sergio Vázquez, Jacobo Álvarez & Francisco Daniel Freijedo, "Multilevel multiphase feed-forward space vector modulation technique", IEEE Transactions on Industrial Electronics, vol. 57, no. 6, pp. 2026-2075, June 2010. [doi]
  4. Alejandro G. Yepes, Francisco D. Freijedo, Jesús Doval-Gandoy, Óscar López, Jano Malvar & Pablo Fernández-Comesaña, "Effects of discretization methods on the performance of resonant controllers", IEEE Transactions on Power Electronics, vol. 25, no. 7, pp. 1692-1712, July 2010. [doi]

2009

  1. Óscar López, Emil Levi, Francisco D. Freijedo & Jesús Doval-Gandoy, "Number of switching state vectors and space vectors in multilevel multiphase converters", Electronics Letters, vol. 45, no. 10, pp. 524-525, May 2009. [doi]
  2. Alfonso Lago, Carlos Martínez-Peñalver, Jorge Marcos, Jesús Doval-Gandoy, Andrés Nogueiras, Óscar López, Félix Santiago, Francisco D. Freijedo, José Manuel Vilas & José Carlos Lorenzo, "Geometric analysis and manufacturing considerations for optimizing the characteristics of a twisted pair", IEEE Transactions on Electronics Packaging Manufacturing, vol. 32, no. 1, pp. 22-31, January 2009. [doi]
  3. Francisco D. Freijedo, Jesús Doval-Gandoy, Óscar López & Carlos Martínez-Peñalver, "A signal processing adaptive algorithm for selective current harmonic cancellation in active power filters", IEEE Transactions on Industrial Electronics, vol. 56, no. 8, pp. 2829-2840, August 2009. [doi]
  4. Óscar López, Jacobo Álvarez, Jesús Doval-Gandoy & Francisco D. Freijedo, "Multilevel multiphase space vector PWM algorithm with switching state redundancy", IEEE Transactions on Industrial Electronics, vol. 56, no. 3, pp. 792-804, March 2009. [doi]
  5. Francisco D. Freijedo, Jesús Doval-Gandoy, Óscar López & Enrique Acha, "Tuning of phase locked loops for power converters under distorted utility conditions", IEEE Transactions on Industry Applications, vol. 45, no. 6, pp. 2039-2047, November 2009. [doi]
  6. Francisco D. Freijedo, Jesús Doval-Gandoy, Óscar López & Enrique Acha, "A generic open loop algorithm for three phase grid voltage/current synchronization with particular reference to phase, frequency and amplitude estimation", IEEE Transactions on Power Electronics, vol. 24, no. 1, pp. 94-107, January 2009. [doi]

2008

  1. Óscar López, Jacobo Álvarez, Jesús Doval-Gandoy, Francisco D. Freijedo, Andrés Nogueiras, Alfonso Lago & Carlos Martínez-Peñalver, "Comparison of the FPGA implementation of two multilevel space vector PWM algorithms", IEEE Transactions on Industrial Electronics, vol. 55, no. 4, pp. 1537-1547, April 2008. [doi]
  2. Óscar López, Jacobo Álvarez, Jesús Doval-Gandoy & Francisco D. Freijedo, "Multilevel multiphase space vector PWM algorithm", IEEE Transactions on Industrial Electronics, vol. 55, no. 5, pp. 1933-1942, May 2008. [doi]

2006

  1. Óscar López, Jesús Doval-Gandoy, Carlos Martínez-Peñalver, José Rey & Francisco D. Freijedo, "Redundancy and basic switching rules in multilevel converters", International Review of Electrical Engineering, vol. 0, no. 0, pp. 66-73, January 2006. [url]
  2. Andrés Nogueiras, Alfonso Lago, Jacobo Álvarez, Óscar López, Jesús Doval-Gandoy, Jorge Marcos & Carlos Martínez-Peñalver, "Mathematical nonlinear modeling of the PWM modulation applied to interleaved DC-to-DC converters design and simulation", International Review of Electrical Engineering, vol. 1, no. 5, pp. 670-683, November 2006. [url]
  3. Daniel Cernadas, Cristina Trillo, Ángel F. Doval, Óscar López, Carlos López, Benito V. Dorrio, Jose L. Fernández & Mariano Pérez-Amor, "Non-destructive testing of plates based on the visualisation of Lamb waves by double-pulsed TV holography", Mechanical Systems and Signal Processing, vol. 20, no. 6, pp. 1338-1349, August 2006. [doi]

2003

  1. Cristina Trillo, Ángel F. Doval, Daniel Cernadas, Óscar López, Carlos López, Benito V. Dorrío, José L. Fernández & Mariano Pérez-Amor, "Measurement of the complex amplitude of transient surface acoustic waves using double-pulsed TV holography and a two-stage spatial Fourier transform method", Measurement Science and Technology, vol. 14, no. 12, pp. 2127-2134, October 2003. [doi]
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