Alejandro Paz

• Pontificia Universidad Javeriana Cali, Instructor, 1998-2002, part time.
• Pontificia Universidad Javeriana Cali, Instructor, 2002- 2005, full time.
• Pontificia Universidad Javeriana Cali, Assistant Professor, 2005 - 2015, full time
• Pontificia Universidad Javeriana Cali, Associate Professor, 2016 - present, full time

Professor Paz’s research is focused on energy conversion processes and electric machinery.  Particularly on diagnosis of electric machinery, electric power quality and power generation.  He believes it is critical to harmonize automation with efficient energy conversion processes in order to improve the sustainability of environmental friendly production processes. Prof. Paz studies and develops novel techniques to diagnose electrical machines for predictive and preventive maintenance.  He focuses on the development of systematic methods that are implemented in the form of stochastic expert systems.  The premise being that existing approaches erroneously assume that specific symptoms appear automatically in the presence of specific faults, which leads to credible predictions in only 1/3 of the faults and the remaining 2/3 to false positives that cause unnecessary interruption to productions lines.  Prof. Paz’s has recently proposed a new form of diagnostics tool that combines stochastic and probabilistic methods with multi-parametric non-invasive analysis of electric motors, which accurately predict its state and identifies its short, medium and long-term probability of failure. 

Currently Funded Research

• DC/AC Electric motors fault diagnosis.
• Energy Efficiency. 
• Integration of distributed energy generation in micro-grids in presence of non-conventional energy sources. 

• Evaluación de la eficiencia energética combinada en sistemas EMDS de bombeo paralelo. Alejandro Paz Parra & Manuel Vicente Valencia. Revista CIDET Número 16. June 2017. ISSN 2145-2938.
• Online Electric Current Based Diagnosis of Stator Faults on Squirrel Cage Induction Motors. Alejandro Paz Parra, Jose Luis Oslinger Gutiérrez & Javier Olaya Ochoa. International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering Vol: 10, No: 12, 2016. ISSN 1000-5952.
• Summary of Technical Approaches to Improve Energy Efficiency in Electric Motor Drive Systems. Alejandro Paz Parra, Manuel Vicente Valencia, Luz Nidia Quintero & Jairo Palacios. “ICEEPE 2016: 18th International Conference on Electrical, Electronics and Power Engineering”. Barcelona, Spain. December 12 - 13, 2016. ISSN: 2010 – 3778.
• A State Variable Model for Considering the Power Inductor DC Resistance on the Open Loop Performance of a Buck-Boost DC to DC Converter. Paz Parra Alejandro, Lozano Espinoza Carlos & Valencia Manuel Vicente. Journal of Multidisciplinary Engineering Science and Technology (JMEST). ISSN: 3159-0040. Vol. 1 Issue 3, October – 2014.
• Diagnóstico de fallas estatóricas en motores de inducción de jaula de ardilla por medio de la corriente de secuencia negativa. Paz Parra, Alejandro, Oslinger, Jose Luis y Palacios Peñaranda, Jairo Arcesio. 1, Bogota D.C. : Sello editorial Javeriano, Junio de 2014, Ingeniería y Universidad, Vol. 18, págs. 159-176. ISBN:0123-2126.
• Stator Fault Diagnosis on Squirrel Cage Induction Motors by ESA and EPVA. Paz Parra, Alejandro, y otros. Bogota D.C. : IEEE, 2013. Proceedings of the 2013 Workshop in power electronics and power quality applications PEPQA 2013. 978-1-4799-1006-9.
• Inter-turn Short-circuit Analysis in an Induction Machine by Finite Elements Method and Field Tests. Diaz, Dario, Amaya Enciso, Martha Cecilia y Paz Parra, Alejandro. Marseille, France: IEEE Industrial Electronics Society, 2012. Proceedings of the IEEE XXth International Conference on Electrical Machines ICEM. ISBN: 978-1-4673-0141-1