Dr Antonio Griffo

PhD, MSc

Department of Electronic and Electrical Engineering

Senior Lecturer

Electrical Machines and Drives Research Group

Lecturer for Aerospace Engingeering

Headshot of Antonio Griffo
a.griffo@sheffield.ac.uk
+44 114 222 5050

Full contact details

Dr Antonio Griffo
Department of Electronic and Electrical Engineering
Profile

I received my MSc in Electronic Engineering and PhD in Electrical Engineering from the University of Naples in Italy in 2003 and 2007, respectively.

After completing my PhD on power systems stability and power quality improvement using power electronics based controllers in Flexible AC Transmission Systems (FACTS), I moved to the UK.

Here I worked as researcher at the Universities Bristol and Sheffield, where I was appointed Lecturer in 2013.

I have worked on a large number of projects involving the modelling, design, optimisation and control of power electronics and motor drives for applications including automotive, aerospace and renewables.

I developed modeling methods to analyse the dynamics of hybrid AC/DC power systems such as those proposed for the “More electric aircraft”, designed advanced control methods for motor drives including novel sensor-less techniques for aircraft starter/generators and developed methods for Hardware and Power-Hardware-in-the-Loop real-time simulation and testing of electrical drives.

I am actively researching the use of SiC-based converters for aerospace and renewables applications.

As electrical technologies become more widespread in novel applications where reliability is a primary concern, such as future more and all-electric aircrafts, I’ve become involved in several projects related to the modelling and detection of faults in permanent magnet machines and power converters.

In particular, I am interested in the development of signal acquisition and processing techniques for real-time monitoring of the state of health of machine insulation, bearings and power electronics converters, with the aim of detecting degradation and faults and predicting the lifetime of components.

Qualifications
  • PhD (Electrical Engineering), University of Naples, 2007
  • MSc (Electronic Engineering), University of Naples, 2003
Research interests
  • Advanced control of electric drives and power electronics converters
  • SiC power electronics converters in transportation and renewable applications
  • Reliability, fault modelling and fault detection in permanent magnet machines and power converters
  • On-line monitoring of the state of health of machines and converters, diagnosis and prognosis of faults
  • Sensorless control of permanent magnet brushless dc and ac drives
  • Modelling and stability analysis of AC and hybrid AC/DC power systems
  • Power management in microgrids
  • Power electronics and systems for vehicular applications
  • More electric aircraft technologies
  • Thermal modelling and thermal monitoring of electric machines and converters
  • Parameters estimation in electric drives
  • Real time modelling and hardware in the loop testing methodologies
Publications

Journal articles

Chapters

Conference proceedings papers

  • Foster M, Zhu Z, Odavic M, Griffo A, Stone D & Li G (2020) Impact of magnetic coupling in transverse flux permanent magnet machine for wind power application. IET Power Electronics Machines and Drives Conference, 15 December 2020 - 15 December 2020. RIS download Bibtex download
  • Liu T, Zhu Z, Foster M, Odavic M, Griffo A & Li G (2020) Sensorless control for permanent-magnet synchronous machine drives considering resistance asymmetry. IET Power Electronics Machines and Drives Conference, 15 December 2020 - 17 December 2020. RIS download Bibtex download
  • Foster M, Zhu Z, Stone D, Griffo A, Odavic M & Li G (2020) Multivariable generalized predictive speed control for permanent magnet synchronous machine with enhanced luenberger speed observer. IET Power Electronics Machines and Drives Conference, 15 December 2020 - 17 December 2020. RIS download Bibtex download
  • Sundeep S, Griffo A, Wang J & Tsyokhla I (2020) Online monitoring of ground-wall insulation impedance under cyclic load operation. PEMD 2020 RIS download Bibtex download
  • Sundeep S, Griffo A & Wang J (2020) Prediction of Transient Voltage Distribution in Inverter-Fed Stator Winding, Considering Mutual Couplings in Time Domain. Proceedings of 2020 IEEE Energy Conversion Congress and Exibition ECCE RIS download Bibtex download
  • Griffo A, Wei Y, Alvarez-Gonzalez F & Zhu Z (2020) Frequency-Domain based Windings Voltage Distribution Modelling for Converter-Fed Electrical Machines. Proceedings of 2020 IEEE Energy Conversion Congress and Exposition (ECCE) RIS download Bibtex download
  • Alvarez-Gonzalez F, Griffo A, Hewitt D & Wang J (2020) Design of Experiments for Stator Windings Insulation Degradation under High dv/dt and High Switching Frequency. Proceedings of 2020 IEEE Energy Conversion Congress and Exposition (ECCE) RIS download Bibtex download
  • Alvarez-Gonzalez F, Griffo A, Hewitt D & Wang J (2020) Challenges of Common Mode Current and Voltage Acquisition for Stator Winding Insulation Health Monitoring. Proceedings of 2020 IEEE Energy Conversion Congress and Exposition (ECCE) RIS download Bibtex download
  • Sundeep S, Griffo A, Wang J & Alvarez Gonzalez F (2020) Peak Voltage Stress on Stator Winding in PWM Inverter fed Drives. ICEM2020 – International Conference on Electrical Machines RIS download Bibtex download
  • Raab O, Guacci M, Griffo A, Kriegel K, Morris Heller , Wang J, Bortis D, Schulz M & Kolar J (2020) Full-SiC integrated power module based on planar packaging technology for high efficiency power converters in aircraft applications. CIPS 2020 - 11th International Conference on Integrated Power Electronics Systems. Berlin, Germany, 24 March 2020 - 26 March 2020. View this article in WRRO RIS download Bibtex download
  • Tsyokhla I, Griffo A & Wang J (2019) On-Line Motor Insulation Capacitance Monitoring Using Low-Cost Sensors. 2019 IEEE Energy Conversion Congress and Exposition (ECCE), 29 September 2019 - 3 October 2019. RIS download Bibtex download
  • Griffo A, Tsyokhla I & Wang J (2019) Lifetime of Machines Undergoing Thermal Cycling Stress. 2019 IEEE Energy Conversion Congress and Exposition (ECCE), 29 September 2019 - 3 October 2019. RIS download Bibtex download
  • Kumar DKP, Li GJ, Zhu ZQ, Foster MP, Stone DA, Griffo A, Odavic M, Clark R & Thomas A (2019) Influence of Demagnetization on Selecting the Optimum Slot/Pole Number Combination for 3MW Surface Mounted Permanent Magnet Vernier Machine. 2019 22nd International Conference on Electrical Machines and Systems (ICEMS), 11 August 2019 - 14 August 2019. RIS download Bibtex download
  • Griffo A, Kamel T & Wang J (2019) Modelling framework for parallel SiC power MOSFETs chips in modules developed by planar technology. 2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC), 7 November 2018 - 9 November 2018. View this article in WRRO RIS download Bibtex download
  • Li G, Zhu ZQ, Gabsi M, Griffo A & Ojeda J (2018) Modeling of Inter-Turn and Inter-Phase Short-Circuit of Flux-Switching Permanent Magnet Motors. 2018 IEEE Energy Conversion Congress and Exposition (ECCE), 23 September 2018 - 27 September 2018. View this article in WRRO RIS download Bibtex download
  • Alvarez-Gonzalez F, Griffo A & Wang B (2018) Permanent Magnet Synchronous Machines Inter- Turn Short Circuit Fault Detection by Means of Model-Based Residual Analysis. IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 21 October 2018 - 23 October 2018. View this article in WRRO RIS download Bibtex download
  • Chen L, Chen X, Wang J & Griffo A (2017) Computationally efficient, electro-thermally coupled model for permanent magnet machines in electric vehicle traction applications. applications," 2017 SAE Thermal Management Systems Symposium (TMSS), 10-12 Oct 2017. View this article in WRRO RIS download Bibtex download
  • Chen X, Wang J & Griffo A (2017) Comparative Study on Thermal Management Schemes with Waste Heat Recovery from Electric Vehicle Power Train. 2017 SAE Thermal Management Systems Symposium (TMSS), 10-12 Oct 2017. View this article in WRRO RIS download Bibtex download
  • Sun T, Wang J, Griffo A & Sen B (2017) Active thermal management for Interior Permanent Magnet Synchronous Machine (IPMSM) drives. 2017 IEEE International Electric Machines and Drives Conference (IEMDC), 21 May 2017 - 24 May 2017. RIS download Bibtex download
  • Wang B, Wang J, Griffo A, Sun Z & Chong E (2017) A fault tolerant machine drive based on permanent magnet assisted synchronous reluctance machine. Energy Conversion Congress and Exposition (ECCE), 2016 IEEE View this article in WRRO RIS download Bibtex download
  • Wang B, Wang J, Griffo A, Patel VI, Sun Z, Chong E & Smitham R (2016) Permanent magnet generator turn fault detection using Kalman filter technique. 2016 IEEE Energy Conversion Congress and Exposition (ECCE), 18 September 2016 - 22 September 2016. RIS download Bibtex download
  • Alvarez-Gonzalez F & Griffo A (2016) High-fidelity modelling of permanent magnet synchronous motors for real-time hardware-in-the-loop simulation. 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016) RIS download Bibtex download
  • El Murr G, Griffo A, Wang J, Zhu ZQ & Mecrow B (2015) Reliability assessment of fault tolerant permanent magnet AC drives. IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, 9 November 2015 - 12 November 2015. RIS download Bibtex download
  • Wang B, Localzo G, Murr GE, Wang J, Griffo A, Gerada C & Cox T (2015) Overall assessments of dual inverter open winding drives. 2015 IEEE International Electric Machines & Drives Conference (IEMDC), 10 May 2015 - 13 May 2015. RIS download Bibtex download
  • Tsyokhla I, Griffo A & Wang J (2015) On-line monitoring of winding insulation health using high frequency common mode voltage from PWM. 2015 IEEE International Electric Machines & Drives Conference (IEMDC), 10 May 2015 - 13 May 2015. RIS download Bibtex download
  • Griffo A, Salt D, Wrobel R & Drury D (2013) Computationally efficient modelling of permanent magnet synchronous motor drives for real-time Hardware-in-the-Loop simulation (pp 5368-5373-5368-5373) RIS download Bibtex download
  • Williamson SJ, Griffo A, Stark BH & Booker JD (2013) Control of parallel single-phase inverters in a low-head pico-hydro off-grid network (pp 1571-1576-1571-1576) RIS download Bibtex download
  • Mellor P, Wrobel R, Salt D & Griffo A (2013) Experimental and analytical determination of proximity losses in a high-speed PM machine (pp 3504-3511-3504-3511) RIS download Bibtex download
  • Griffo A, Drury D & Salt D (2012) Hardware in the loop based synchronous generator emulation test rig for more electric aircraft power systems, Vol. 2012 RIS download Bibtex download
  • Wrobel R, Griffo A & Mellor PH (2012) Scaling of AC copper loss in thermal modeling of electrical machines (pp 1424-1429-1424-1429) RIS download Bibtex download
  • Griffo A & Drury D (2012) Hardware in the loop emulation of synchronous generators for aircraft power systems. Electrical Systems for Aircraft, Railway and Ship Propulsion, ESARS RIS download Bibtex download
  • Wrobel R, Griffo A, Mellor P & Holliday D (2011) The influence of design parameters on sensorless position estimation of PMSM for zero and low speed. UK Magnetic Society Meeting on More Electric Aircraft. Bristol, UK, 2011. RIS download Bibtex download
  • Wrobel R, Griffo A, Mlot A, Yon J, Mellor P, Turner J, Rolfe B, Stevenson R & Collins R (2011) Design study of a three-phase brushless exciter for aircraft starter/generator. IEEE Energy Conversion Congress and Exposition: Energy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings (pp 3998-4004) RIS download Bibtex download
  • Griffo A, Wrobel R, Mellor P, Holliday D, Sangha P, Dinu A & Holme M (2011) The effect of magnetic saturation on sensorless control of a brushless permanent magnet motor under AC and DC excitation. IEEE Energy Conversion Congress and Exposition: Energy Conversion Innovation for a Clean Energy Future, ECCE 2011, Proceedings (pp 1582-1589) RIS download Bibtex download
  • Griffo A & Wang J (2011) Stability analysis of "more electric" aircraft hybrid electrical power systems. International Conference on Electrical Machines and Systems, ICEMS 2011 RIS download Bibtex download
  • Griffo A & Wang J (2010) Design optimization of passive DC filters for aerospace applications. Power Electronics, Machines and Drives - 5th IET Conference(563 CP) (pp 1-6) RIS download Bibtex download
  • Griffo A & Wang J (2009) Stability assessment of electric power systems for 'more electric' aircraft. 13th European Conference on Power Electronics and Applications, EPE '09 View this article in WRRO RIS download Bibtex download
  • Kuhn MR, Bals J, Griffo A & Wang J (2009) A components library for simulation and analysis of aircraft electrical power systems using Modelica. 13th European Conference on Power Electronics and Applications, EPE '09 RIS download Bibtex download
  • Griffo A & Wang J (2009) State-space average modelling of synchronous generator fed 18-pulse diode rectifier. 13th European Conference on Power Electronics and Applications, EPE '09 RIS download Bibtex download
  • Griffo A, Wang J & Howe D (2008) State-space average modeling of 18-pulse diode rectifier. 3rd International Conference 'From Scientific Computing to Computational Engineering'. Athens, Greece, 9 July 2008 - 12 July 2008. RIS download Bibtex download
  • Griffo A, Wang J & Howe D (2008) Stability analysis of electric power systems for 'more electric' aircraft. 3rd International Conference 'From Scientific Computing to Computational Engineering'. Athens, Greece, 9 July 2008 - 12 July 2008. RIS download Bibtex download
  • Griffo A, Wang J & Howe D (2008) Large signal stability analysis of DC power systems with constant power loads. IEEE Vehicle Power and Propulsion Conference, VPPC RIS download Bibtex download
  • Han L, Wang J, Griffo A & Howe D (2008) Stability assessment of AC hybrid power systems for 'more electric' aircraft. IEEE Vehicle Power and Propulsion Conference, VPPC RIS download Bibtex download
  • Wang J, Griffo A, Han L & Howe D (2007) Input admittance characteristics of permanent magnet brushless AC motor drive systems. Proceedings of the IEEE Vehicle Power and Propulsion Conference, VPPC '07 (pp 191-196) RIS download Bibtex download
  • Griffo A & Lauria D (2006) Advanced series and parallel converters for power system stability improvement. International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM (pp 803-808) RIS download Bibtex download
  • Griffo A & Lauria D (2006) Some considerations on power system stability improvement by FACTS devices. International Symposium on Power Electronics, Electrical Drives, Automation and Motion, SPEEDAM (pp 809-813) RIS download Bibtex download
  • Griffo A & Drury D (2005) Real-time modeling of electrical machines for hardware-in-the-loop tesing. UK Magnetic Society Meeting. Bristol, UK, April 2005. RIS download Bibtex download
  • Griffo A, Carpinelli G, Lauria D & Russo A (2004) On power quality control strategy for distribution systems in deregulated environment. International Symposium on Power Electronics, Electrical Drives, Automation and Motion. Italy RIS download Bibtex download
  • Nenadović N, Schellevis H, Cuoco V, Griffo A, Nanver LK, Slotboom JW, Theeuwen SJCH & Jos HFF (2004) Electrothermal characterization of silicon-on-glass VDMOSFETs. Proceedings of the 24th International Conference on Microelectronics, Vol. 1 (pp 145-148) RIS download Bibtex download
  • Nenadovic N, d'Alessandro V, Tamigi F, Rossi A, Griffo A, Nanver LK & Slotboom JW (2003) Thermal instability in two-finger bipolar transistors. 33rd Conference on European Solid-State Device Research (pp 203-206) RIS download Bibtex download
Research group
Professional activities
  • Senior Lecturer, Advanced Control of Electrical Drives
  • MSc Projects Coordinator