ANDRÉS JULIÁN SAAVEDRA MONTES Telephone (Office): + 57 4 4255297 email: aj.saavedra@ieee.org, ajsaaved@unal.edu.co EDUCATION Ph.D., Engineering, Universidad del Valle, Colombia, 2011 Concentrations: Electrical Engineering Dissertation: Identification of Excitation Systems for Synchronous Generators. M. Sc., Engineering, Universidad del Valle, Colombia, 2002 Concentrations: Electric Power Generation Thesis: Modeling for Stability Studies of Speed Control Systems and Excitation Systems of Salvajina Power Plant. Bachelor in Electrical Engineering, Universidad del Valle, Colombia, 1998 Thesis: Modeling and Simulation of Salient Pole Synchronous Generator and Static Excitation System Type. TEACHING EXPERIENCE Assistant Professor, 2003 to date Universidad Nacional de Colombia, School of Mechatronics Courses: Electric Machinery Lab, Electric Power Lab and Electric Machinery Professor Lecture hours, 2001 2002 Universidad del Valle. School of Electrical and Electronic Engineering Courses: Electric Machinery Assistant, 1999 2001 Universidad del Valle. School of Electrical and Electronic Engineering Courses: Electric circuits I and II, and Power Electronic Control Professor Lecture hours, 2000 Universidad del Valle. Electronic Technology Program Courses: Maintenance Techniques PROFESSIONAL EXPERIENCE Consulting Engineer. GERS S.A. Calculation of the relay parameters of the power system in the Teniente mine, Cali, Colombia, 2003. Project Engineer. School of Electrical and Electronic Engineering Performance evaluation and modeling of the excitation systems for generators in Barranquilla thermoelectric power plant, Cali, Colombia, 2002.
Project Engineer. School of Electrical and Electronic Engineering Tests for obtaining the mathematical models of excitation systems and governors of the Salvajina, Calima, and Alto Anchicayá power plants, Cali, Colombia, 2000. RESEARCH PROJECTS Perturbation signal design in excitation system identification for synchronous generators. Sponsor: Universidad Nacional de Colombia. 2012 Currently. Analysis, modeling and magnagement of alternative generation systems and their insertion in smart grids. Sponsor: Dirección de Investigaciones Medellín (DIME). 2012 Currently. Maximizing energy extraction in urban wind turbines for cogeneration in El Valle de Aburrá. Sponsors: Universidad Nacional de Colombia e Instituto Tecnológico Metropolitano. 2011-2012. Design, analysis and evaluation of control strategies to optimize generation systems based on photovoltaic panels. Sponsors: Universidad Nacional de Colombia e Instituto Tecnológico Metropolitano. 2010-2011. Criteria for defining the model details of a generation control system at several stability analyses in power systems. Sponsor: Universidad Nacional de Colombia, 2004. Design and implementation of an induction generator voltage control. Sponsor: Universidad Nacional de Colombia, 2003. JOURNAL PUBLICATIONS Bastidas-Rodriguez, J.D., Ramos-Paja, C.A., Saavedra-Montes, A.J. Reconfiguration analysis of photovoltaic arrays based on parameters estimation, Simulation Modelling Practice and Theory, Volume 35, June 2013, Pages 50-68. Ramos-Paja, C.A., González, D., Saavedra-Montes, A.J. Accurate calculation of settling time in second order systems: A photovoltaic application, Rev. Fac. Ing. Univ. Antioquia, Volume 66, May 2013, Pages 104-117. Ramos-Paja, C.A., Saavedra-Montes, A.J., Vitelli, M. Distributed maximum power point tracking with overvoltage protection for PV systems, Dyna, No. 178, April 2013, Pages. 141-150. A.J. Saavedra-Montes, C.A. Ramos-Paja, J.M. Ramirez-Scarpetta, A Systematic Review on Identification Systems for Synchronous Generators, Revista EIA, Issue 18, December 2012, Pages 33-48. A.J. Saavedra-Montes, C.A. Ramos-Paja, M.L. Orozco-Gutierrez, W.A. Cifuentes, J.M. Ramirez-Scarpetta, Calculation of excitation system controllers to fulfill IEEE standard performance indexes, Electric Power Systems Research, Volume 89, Issue 8, August 2012, Pages 196-203.
Saavedra-Montes A.J., Ramírez-Scarpetta J.M., Ramos-Paja C.A., Malik O.P., Identification of Excitation Systems with the Generator Online, Electric Power System Research, Volume 87, Issue 6, June 2012, Pages 1-9. V. Álvarez, A.F. García, C.A. Ramos-Paja, A.J. Saavedra-Montes, E.I. Arango, Design of a Low Power System Based on Fuel Cells, Revista EIA, Issue 17, June 2012, Pages 85-103. C.A. Ramos-Paja, G. Petrone, A.J. Saavedra-Montes Compensation of DC-link voltage oscillations in grid connected PV systems, Rev. Fac. Ing. Univ. Antioquia, Volume 63, June 2012, Pages 82-92. D. Gonzalez, C.A. Ramos-Paja, A.J. Saavedra-Montes, E.I. Arango, C.E. Carrejo, Modeling and control of grid connected photovoltaic systems, Rev. Fac. Ing. Univ. Antioquia, Volume 62, Pages 7-18. March 2012. E. Arango, C.A. Ramos-Paja, A.J. Saavedra-Montes, Design of asymmetrical boost converters based on photovoltaic systems requirements, Dyna, No. 171, Pages. 31-40, 2012. Ramos-Paja C.A., Arango E., Giral R., Saavedra-Montes A.J., and Carrejo C., dc/dc preregulator for input current ripple reduction and efficiency improvement. Electric Power Systems Research, Volume 81, Issue 11, November 2011, Pages 2048-2055. Arango E., Ramos-Paja C.A., Carrejo C., Giral R., and Saavedra-Montes A.J., A Ripple- Mitigating Pre-Amplifier Based on Interleaved dc-dc Boost Converters for Efficiency Improvement. Rev. Fac. Ing. Univ. Antioquia, Volume 60, September 2011, Pages 214-225. Ramos-Paja C.A., Saavedra-Montes A.J., Giral R., Vega Hincapié J.D., Rios Angel R.A., Design, modeling, control and implementation of a fuel cell generation system. Rev. Fac. Ing. Univ. Antioquia Volume 59, June 2011, Pages 9-22. Saavedra-Montes A.J., Ramírez-Scarpetta J.M., and Malik O.P., Methodology to estimate parameters of an excitation system based on experimental conditions. Electric Power Systems Research, Volume 81, Issue 1, January 2011, Pages 170-176. Saavedra Montes, A.J.; Botero Castro, H.A.; Hernandez Riveros, J.A., How to Motivate Students to Work in the Laboratory: a New Approach for an Electrical Machines Laboratory. IEEE Transaction on Education, Volume 53, Issue: 3, August 2010, Pages 490-496. Saavedra Montes A.J., and Fernández Samaca L., Controling a Planar Temperature Grid. Ingeniería & Desarrollo, Volume 24, 2008, Pages 133-148. Saavedra A.J. and Ramírez J.M. Método de clasificación bibliográfica aplicado a la identificación de sistemas de excitación de generadores sincrónicos. Energía y Computación, Volume 16, Issue: 2, 2008, Pages 49-55. Saavedra A.J, Ramírez J.M., and Vásquez H., Validación de los Modelos de los Sistemas de Control de Generación para Estudios de Estabilidad de la Central de Salvajina; Parte I: Control de Velocidad. Energía y Computación, Volumen 11, Issue: 2, 2004, Pages 60-65.
Saavedra A.J, Ramírez J.M., and Vásquez H., Validación de los Modelos de los Sistemas de Control de Generación para Estudios de Estabilidad de la Central de Salvajina; Parte II: Control de Excitación. Energía y Computación, Volumen 11, Issue: 2, 2004, Pages 66-71. Ramírez J.M., Caicedo G., Vásquez H., and Saavedra A.J., Modelos Matemáticos del Sistema Excitación y el Regulador de Velocidad de una Unidad de la Central de Salvajina. Energía y Computación, Volumen 9, Issue: 2, 2000, Pages 69-75. CONFERENCE PUBLICATIONS Ramirez C.A., and Saavedra-Montes A.J. Parameter calculation of a small wind turbine model, in: 2012 4 th IEEE Colombian Workshop on Circuits and Systems, Barranquilla, Colombia, 2012. Camarillo J.R., and Saavedra-Montes A.J. Dynamic model validation via error indexes, in: 2012 4 th IEEE Colombian Workshop on Circuits and Systems, Barranquilla, Colombia, 2012. Ramos-Paja, C.A., Bastidas, J.D., Saavedra-Montes, A.J., Guinjoan-Gispert, F., Goez, M. Mathematical model of total cross-tied photovoltaic arrays in mismatching conditions, in: 2012 4 th IEEE Colombian Workshop on Circuits and Systems, Barranquilla, Colombia, 2012. Ramos-Paja C.A., Saavedra-Montes A.J., and Arango, E., Maximum power point tracking in wind farms by means of a multivariable algorithm, in: 2012 Workshop on Engineering Applications (WEA), Bogotá, Colombia, 2012. Giral R., Carrejo C.E., Vermeersh M., Saavedra-Montes A.J., and Ramos-Paja C.A., PV Field Distributed Maximum Power Point Tracking by Means of an Active Bypass Converter, in: International Conference on CLEAN ELECTRICAL POWER: Renewable Energy Resources Impact, Ischia, Italy, 2011. Gonzalez D., Ramos-Paja C.A., Carrejo C., Serna S., Saavedra-Montes A., Modeling and control of grid-connected photovoltaic systems for 100 Hz oscillations mitigation, in: IEEE Second Latin America Symposium on Circuits and Systems (LASCAS), Bogotá, Colombia, 2011. Ramos-Paja, C.A.; Carrejo, C.; Saavedra, A.; Ramirez, I.; Paniagua, L.; Giral, R.; Alonso, C. A ripple-mitigating pre-filter based on interleaved DC-DC boost converters, in: IECON 2010-36th Annual Conference on IEEE Industrial Electronics Society, Glendale, AZ, USA, pp 2771 2777, 2010. Saavedra A.J. and Ramírez J.M., Parameter estimation of under-excitation limiter from the registers of startup of a generation unit in: Transmission and Distribution Conference and Exposition: Latin America, 2008 IEEE/PES, Bogotá, Colombia, 2008. Saavedra A.J. and Ramírez J.M., La identificación de sistemas aplicada a los sistemas de excitación de generadores, in: VII Congreso De La Asociación Colombiana De Automática (ACA), Pontificia Universidad Javeriana, Cali, Colombia, 2007.
Ramírez J.M., Saavedra A.J., and Vasquez H., Modelado de los Sistemas de Control de Velocidad y Excitación de la Central Hidroeléctrica de Salvajina, in: Simposio Nacional en Generación y Comercialización de Energía Eléctrica del CIDET, Pereira, Colombia, 2003. Ramírez J.M., Saavedra A.J., and Vasquez H., Modelado de los sistemas de control de la central hidroeléctrica de Salvajina Parte I: Control de Velocidad, in: V Congreso de la Asociación Colombiana de Automática, Medellín, Colombia, Julio, 2003. Ramírez J.M., Saavedra A.J., and Vasquez H., Modelado de los sistemas de control de la central hidroeléctrica de Salvajina Parte II: Control de Excitación, in: V Congreso de la Asociación Colombiana de Automática, Medellín, Colombia, Julio, 2003. Saavedra A.J., Ramírez J.M., and Vasquez H., Validación de los modelos de los sistemas de control de generación para estudios de estabilidad de la central de Salvajina; Parte I: Control de Velocidad, in: XXII Convención de Centroamérica y Panamá de la IEEE, Ciudad de Panamá, Panamá, 2002. Saavedra A.J., Ramírez J.M., and Vasquez H., Validación de los modelos de los sistemas de control de generación para estudios de estabilidad de la central de Salvajina; Parte II: Control de Excitación in: XXII Convención de Centroamérica y Panamá de la IEEE, Ciudad de Panamá, Panamá, 2002. Ramírez J.M., Caicedo G., Vasquez H., and Saavedra A.J., Modelos Matemáticos del Sistema Excitación y el Regulador de Velocidad de una Unidad de la Central de Salvajina, in: IX Congreso Latinoamericano de Control Automático, IV Congreso de la Asociación Colombiana de Automática, Cali, Colombia, 2000. TECHNICAL SOCIETIES IEEE member since 1998. IEEE Power and Energy Society since 1998. GRANTS AND FELLOWSHIPS: Fellowship Doctorados Nacionales, Francisco José de Caldas, COLCIENCIAS 2005. Fellowship Teaching Assistant, Programa de Posgrado de Ingeniería Eléctrica, Electrónica y de la Computación, Cali, Colombia. 1999. AWARDS AND HONORS: Lecture winning second place in: Simposio Nacional en Generación y Comercialización de Energía Eléctrica del CIDET, Modelado de los Sistemas de Control de Velocidad y Excitación de la Central Hidroeléctrica de Salvajina, Pereira, Colombia, 2003.
Meritorious Master Thesis, Modeling for Stability Studies of Speed Control Systems and Excitation Systems of Salvajina Power Plant, Cali, Colombia, 2002. Meritorious Doctoral Thesis, Identification of Excitation Systems for Synchronous Generators, Cali, Colombia, 2011.