Jorge Estima
Jorge Estima was born in Aveiro, Portugal in 1984. He received the E. E. diploma and the PhD degree from University of Coimbra, Portugal, in 2007 and 2012, respectively. Since then, he has been a postdoctoral researcher at the Electromechatronics Laboratory in the Department of Electromechanical Engineering of the University of Beira Interior, Covilhã, Portugal. His research interests are focused on condition monitoring and diagnostics of power electronics and AC motors, fault-tolerant variable speed drives and energy efficiency in motor drive systems.

PhD, Power Electronics and Electric Drives, University of Coimbra, Coimbra, Portugal, 2012.
E. E. Diploma, Energy, University of Coimbra, Coimbra, Portugal, 2007.
Matos, D. M. B.; Estima, J. O.; Cardoso, A. J. M.: ''Fault Analysis of Three-Level NPC Inverters in Synchronous Reluctance Motor Drives''; Technological Innovation for Cyber-Physical Systems, Luís M. Camarinha-Matos, António J. Falcão, Nazanin Vafaei and Shirin Najdi (Editor), , 206-216 pp., Springer International Publishing (978-3-319-31164-7), Cham, Switzerland, 2016.
Estima, J. O.; Cardoso, A. J. M.: ''Comparison of Different Modulation Strategies Applied to PMSM Drives Under Inverter Fault Conditions''; Technological Innovation for Sustainability, Luís M. Camarinha-Matos (Editor), , 493-501 pp., Springer (978-3-642-19169-5), Boston, USA, 2011.
Jlassi, I.; Estima, J. O.; El Khil, S. K.; Bellaaj, N. M.; Cardoso, A. J. M.: ''A Robust Observer-Based Method for IGBTs and Current Sensors Fault Diagnosis in Voltage-Source Inverters of PMSM Drives''; IEEE Transactions on Industry Applications, Vol. 53, No. 3, pp. 2894-2905, May / June, 2017.
El Khil, S. K.; Jlassi, I.; Estima, J. O.; Bellaaj, N. M.; Cardoso, A. J. M.: ''Current Sensor Fault Detection and Isolation Method for PMSM Drives, Using Average Normalized Currents''; Electronics Letters, Vol. 52, No. 17, pp. 1434-1436, August, 2016.
Jlassi, I.; Estima, J. O.; El Khil, S. K.; Bellaaj, N. M.; Cardoso, A. J. M.: ''Multiple Open-Circuit Faults Diagnosis in Back-to-Back Converters of PMSG Drives for Wind Turbine Systems''; IEEE Transactions on Power Electronics, Vol. 30, No. 5, pp. 2689-2702, May, 2015.
Stabile, A.; Estima, J. O.; Boccaletti, C.; Cardoso, A. J. M.: ''Converter Power Loss Analysis in a Fault-Tolerant Permanent Magnet Synchronous Motor Drive''; IEEE Transactions on Industrial Electronics, Vol. 62, No. 3, pp. 1984 - 199, March, 2015.
Matos, D. M. B.; Estima, J. O.; Yahia, K.; Cardoso, A. J. M.: ''Modeling and Implementation of MTPA Control Strategy for SynRM Variable Speed Drives''; International Review of Electrical Engineering, Vol. 9, No. 6, pp. 1103-1110, November / December, 2014.
Freire, N. M. A.; Estima, J. O.; Cardoso, A. J. M.: ''A Voltage-Based Approach without Extra Hardware for Open-Circuit Fault Diagnosis in Closed-Loop PWM AC Regenerative Drives''; IEEE Transactions on Industrial Electronics, Vol. 61, No. 9, pp. 4960 - 497, September, 2014.
Henao, H.; Capolino, G.-A.; Fernandez-Cabanas, M.; Filippetti, F.; Bruzzese, C.; Strangas, E.; Pusca, R.; Estima, J. O.; Riera-Guasp, M.; Hedayati-Kia, S.: ''Trends in Fault Diagnosis for Electrical Machines: A Review of Diagnostic Techniques''; IEEE Industrial Electronics Magazine, Vol. 8, No. 2, pp. 31-42, June, 2014.
Marques, J.; Estima, J. O.; Gameiro, N. S.; Cardoso, A. J. M.: ''A New Diagnostic Technique for Real-Time Diagnosis of Power Converter Faults in Switched Reluctance Motor Drives''; IEEE Transactions on Industry Applications, Vol. 50, No. 3, pp. 1854 - 186, May / June, 2014.
Freire, N. M. A.; Estima, J. O.; Cardoso, A. J. M.: ''A New Approach for Current Sensor Fault Diagnosis in PMSG Drives for Wind Energy Conversion Systems''; IEEE Transactions on Industry Applications, Vol. 50, No. 2, pp. 1206-1214, March / April, 2014.
Freire, N. M. A.; Estima, J. O.; Cardoso, A. J. M.: ''A Fault-Tolerant Direct Controlled PMSG Drive for Wind Energy Conversion Systems''; Acta Electrotechnica et Informatica, Vol. 61, No. 2, pp. 821-834, February, 2014.
Freire, N. M. A.; Estima, J. O.; Cardoso, A. J. M.: ''Open-Circuit Fault Diagnosis in PMSG Drives for Wind Turbine Applications''; IEEE Transactions on Industrial Electronics, Vol. 60, No. 9, pp. 3957-3967, September, 2013.
Estima, J. O.; Cardoso, A. J. M.: ''A New Algorithm for Real-Time Multiple Open-Circuit Fault Diagnosis in Voltage-Fed PWM Motor Drives by the Reference Current Errors''; IEEE Transactions on Industrial Electronics, Vol. 60, No. 8, pp. 3496 - 350, August, 2013.
Estima, J. O.; Cardoso, A. J. M.: ''Efficiency Analysis of Drive Train Topologies Applied to Electric/Hybrid Vehicles''; IEEE Transactions on Vehicular Technology, Vol. 61, No. 3, pp. 1021-1031, March, 2012.
Freire, N. M. A.; Estima, J. O.; Cardoso, A. J. M.: ''A Comparative Analysis of PMSG Drives Based on Vector Control and Direct Control Techniques for Wind Turbine Applications''; Electrical Review, Vol. 88, No. 1a, pp. 184 - 187, January, 2012.
Estima, J. O.; Cardoso, A. J. M.: ''A New Approach for Real-Time Multiple Open-Circuit Fault Diagnosis in Voltage Source Inverters''; IEEE Transactions on Industry Applications, Vol. 47, No. 6, pp. 2487-2494, November / December, 2011.
Bento, F. J. F.; Estima, J. O.; Cardoso, A. J. M.: ''Performance Comparison of Three Different AC Variable Speed Motor Drives''; International Conference on Energy Efficiency in Motor Driven Systems, Rome, Italy, pp. 11, September, 2017.
El Khil, S. K.; Jlassi, I.; Estima, J. O.; Bellaaj, N. M.; Cardoso, A. J. M.: ''Detection and Isolation of Open-Switch and Current Sensor Faults in PMSM Drives, Through Stator Current Analysis''; International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, Tinos, Greece, pp. 373-379, August / September, 2017.
Gómez, M.; Ribeiro, E. F. F.; Estima, J. O.; Boccaletti, C.; Cardoso, A. J. M.: ''Development of an Effective MPPT Method Suitable to a Stand-Alone, Low-Cost Wind Turbine System''; Annual Conference of the IEEE Industrial Electronics Society, Firenze, Italy, pp. 5550-5555, October, 2016.
Matos, D. M. B.; Estima, J. O.; Cardoso, A. J. M.: ''Performance of a Synchronous Reluctance Motor Drive with a Fault-Tolerant Three-Level Neutral Point Clamped Inverter''; International Conference on Electrical Machines, Lausanne, Switzerland, pp. 1152-1159, September, 2016.
Elsayed, W. M.; Estima, J. O.; Boccaletti, C.; Cardoso, A. J. M.: ''Energy Management Strategy of a Propulsion System with Supercapacitors for Electric and Hybrid Vehicles''; IEEE International Conference on Power Electronics and Motion Control, Varna, Bulgaria, pp. 1210-1215, September, 2016.
Matos, D. M. B.; Estima, J. O.; Cardoso, A. J. M.: ''Performance Evaluation of Synchronous Reluctance Motor Drives Under Inverter Fault Conditions''; IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics & Drives, Guarda, Portugal, pp. 448-454, September, 2015.
Estima, J. O.; Cardoso, A. J. M.: ''Thermal Evaluation of Different Drive Train Topologies for Electric/Hybrid Vehicles''; International Conference on Electrical Machines, Berlin, Germany, pp. 8, September, 2014.
Yahia, K.; Estima, J. O.; Cardoso, A. J. M.: ''Modeling Synchronous Reluctance Motors Including Saturation, Iron Losses and Mechanical Losses''; International Symposium on Power Electronics, Electrical Drives, Automation and Motion, Ischia, Italy, pp. 595-600, June, 2014.
Estima, J. O.; Cardoso, A. J. M.: ''Efficiency Analysis of Synchronous Reluctance Motors''; International Conference on Engineering, Covilhã, Portugal, pp. 9, November, 2013.
Estima, J. O.; Cardoso, A. J. M.: ''Super Premium Synchronous Reluctance Motor Evaluation''; International Conference on Energy Efficiency in Motor Driven Systems, Rio de Janeiro, Brazil, pp. 10, October, 2013.
Drif, M.; Drif, Ma.; Estima, J. O.; Cardoso, A. J. M.: ''The Use of the Stator Instantaneous Complex Apparent Impedance Signature Analysis for Discriminating Stator Winding Faults and Supply Voltage Unbalance in Three-Phase Induction Motors''; IEEE Energy Conversion Congress and Exposition, Denver, USA, pp. 4403-4411, September, 2013.
Drif, M.; Estima, J. O.; Cardoso, A. J. M.: ''The Use of the Stator Instantaneous Complex Apparent Impedance Signature Analysis for Discriminating Stator Winding Faults and Supply Voltage Unbalance in Three-Phase Induction Motors''; IEEE Energy Conversion Congress and Exposition, Denver, USA, pp. 4403-4411, September, 2013.
Marques, J.; Estima, J. O.; Gameiro, N. S.; Cardoso, A. J. M.: ''A New Diagnostic Technique for Real-Time Diagnosis of Power Converter Faults in Switched Reluctance Motor Drives''; Applied Power Electronics Conference and Exposition, Long Beach, USA, pp. 1192-1198, March, 2013.
Estima, J. O.; Freire, N. M. A.; Cardoso, A. J. M.: ''Recent Advances in Fault Diagnosis by Park's Vector Approach''; IEEE Workshop on Electrical Machines Design, Control and Diagnosis, Paris, France, pp. 10, March, 2013.
Drif, M.; Estima, J. O.; Cardoso, A. J. M.: ''Discriminating Rotor Cage Faults and Mechanical Load Oscillations in Three-Phase Induction Motors by the Stator Instantaneous Complex Apparent Impedance''; IEEE Energy Conversion Congress and Exposition, Raleigh, USA, pp. 3024-3031, September, 2012.
Freire, N. M. A.; Estima, J. O.; Cardoso, A. J. M.: ''A Voltage-Based Approach for Open-Circuit Fault Diagnosis in Voltage-Fed SVM Motor Drives Without Extra Hardware''; International Conference on Electrical Machines, Marseille, France, pp. 2378-2383, September, 2012.
Estima, J. O.; Cardoso, A. J. M.: ''Fast Fault Detection, Isolation and Reconfiguration in Fault-Tolerant Permanent Magnet Synchronous Motor Drives''; IEEE Energy Conversion Congress and Exposition, Raleigh, USA, pp. 3617-3624, September, 2012.
Estima, J. O.; Cardoso, A. J. M.: ''Efficiency Evaluation of Fault-Tolerant Operating Strategies Applied to Three-Phase Permanent Magnet Synchronous Motor Drives''; International Conference on Electrical Machines, Marseille, France, pp. 2411-2417, September, 2012.
Freire, N. M. A.; Estima, J. O.; Cardoso, A. J. M.: ''A New Approach for Current Sensor Fault Diagnosis in PMSG Drives for Wind Energy Conversion Systems''; IEEE Energy Conversion Congress and Exposition, Raleigh, USA, pp. 2083-2090, September, 2012.
Estima, J. O.; Cardoso, A. J. M.: ''Single Power Switch Open-Circuit Fault Diagnosis in Voltage-Fed PWM Motor Drives by the Reference Current Errors''; IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics & Drives, Bologna, Italy, pp. 8, September, 2011.
Freire, N. M. A.; Estima, J. O.; Cardoso, A. J. M.: ''Multiple Open-Circuit Fault Diagnosis in Voltage-Fed PWM Motor Drives Using the Current Park’s Vector Phase and the Currents Polarity''; IEEE International Symposium on Diagnostics for Electrical Machines, Power Electronics & Drives, Bologna, Italy, pp. 8, September, 2011.
Estima, J. O.; Cardoso, A. J. M.: ''A Fault-Tolerant Permanent Magnet Synchronous Motor Drive with Integrated Voltage Source Inverter Open-Circuit Faults Diagnosis''; European Conference on Power Electronics and Applications, Birmingham, UK, pp. 10, August / September, 2011.
Freire, N. M. A.; Estima, J. O.; Cardoso, A. J. M.: ''Comparison of PMSG Drives Based on Vector Control and Direct Control Techniques for Wind Turbine Applications''; Portuguese-Spanish Conference on Electrical Engineering, Ponta Delgada, Portugal, pp. 6, June / July, 2011.
Freire, N. M. A.; Estima, J. O.; Cardoso, A. J. M.: ''Comparison of Distinct Modulation Techniques Applied to PMSG Drives for Wind Turbine Applications Under Faulty Operating Conditions''; International Conference on Clean Electrical Power, Ischia, Italy, pp. 63-68, June, 2011.
Freire, N. M. A.; Estima, J. O.; Cardoso, A. J. M.: ''Converters Fault-Diagnosis in PMSG Drives for Wind Turbine Applications''; Annual Conference of the IEEE Industrial Electronics Society, Phoenix, USA, pp. 6, November, 2010.
Estima, J. O.; Cardoso, A. J. M.: ''Performance Analysis of a PMSM Drive for Hybrid Electric Vehicles''; International Conference on Power Electronics Machines and Drives, Rome, Italy, pp. 1-6, September, 2010.
Estima, J. O.; Cardoso, A. J. M.: ''A New Approach for Real-Time Multiple Open-Circuit Fault Diagnosis in Voltage Source Inverters''; IEEE Energy Conversion Congress and Exposition, Atlanta, USA, pp. 8, September, 2010.
Estima, J. O.; Cardoso, A. J. M.: ''A Novel Diagnostic Method for Single Power Switch Open-Circuit Faults in Voltage-Fed PWM Motor Drives''; International Symposium on Power Electronics, Electrical Drives, Automation and Motion, Pisa, Italy, pp. 535-540, June, 2010.
Estima, J. O.; Fernandes, J. L. J.; Cardoso, A. J. M.: ''Faulty Operation Analysis of Permanent Magnet Synchronous Generator Drives for Wind Turbine Applications''; International Conference on Power Electronics Machines and Drives, Brighton, UK, pp. 6, April, 2010.
Estima, J. O.; Cardoso, A. J. M.: ''Performance Evaluation of DTC-SVM Permanent Magnet Synchronous Motor Drives Under Inverter Fault Conditions''; International Conference on Power Electronics Machines and Drives, Porto, Portugal, pp. 1228-1233, November, 2009.
Estima, J. O.; Cardoso, A. J. M.: ''Impact of Inverter Faults in the Overall Performance of Permanent Magnet Synchronous Motor Drives''; IEEE International Electric Machines and Drives Conference, Miami, USA, pp. 1319-1325, May, 2009.
Estima, J. O.; Cardoso, A. J. M.: ''Performance Analysis of Permanent Magnet Synchronous Motor Drives Under Inverter Fault Conditions''; International Conference on Electrical Machines, Vilamoura, Portugal, pp. 1-6, September, 2008.
Estima, J. O.; Cardoso, A. J. M.: ''The Occurrence of Faults in Permanent Magnet Synchronous Motor Drives and its Effects on the Power Supply Quality''; International Conference on Renewable Energies and Power Quality, Santander, Spain, pp. 1-6, March, 2008.
Estima, J. O.; Cardoso, A. J. M.; Mendes, A. M. S.: ''Simulação de um Accionamento Baseado num Motor Síncrono de Ímanes Permanentes''; Portuguese-Spanish Conference on Electrical Engineering, Funchal, Portugal, pp. 1-6, July, 2007.
Estima, J. O.; Cardoso, A. J. M.; Mendes, A. M. S.: ''Simulation of a Permanent Magnet Synchronous Motor Drive with Voltage Source Inverter Fault Diagnosis''; International Congress on Condition Monitoring and Diagnostic Engineering Management, Faro, Portugal, pp. 587-595, June, 2007.
Madeiras, A. J. C., ''Flywheels as a Storage Device in Electric/Hybrid Vehicles'', Supervisor: Cardoso, A. J. M., Co-Supervisor: Estima, J. O., University of Beira Interior, Portugal, 2015.
Estima, J. O., ''Development and Analysis of Permanent Magnet Synchronous Motor Drives with Fully Integrated Inverter Fault-Tolerant Capabilities'', Supervisor: Cardoso, A. J. M., University of Coimbra, Portugal, 2012.