Background

Dr Rafal Wrobel is a Senior Research Associate in the School of Engineering at Newcastle University. His areas of expertise are electrical engineering and electrical machines.

ORCID: Click here.

Publications

• Liu H, Ayat S, Wrobel R, Zhang C. Comparative Study of Thermal Properties of Electrical Windings Impregnated with Alternative Varnish Materials. In: The 9th International Conference on Power Electronics, Machines and Drives (PEMD 2018). 2018, Liverpool, UK: IET.
• Romanazzi P, Ayat S, Wrobel R, Howey DA. 3D homogenisation of concentrated windings with rectangular conductors. In: 2017 IEEE International Electric Machines and Drives Conference (IEMDC 2017). 2017, Miami, FL, USA: IEEE.
• Ayat S, Wrobel R, Baker J, Drury D. A comparative study between aluminium and copper windings for a modular-wound IPM electric machine. In: 2017 IEEE International Electric Machines and Drives Conference (IEMDC 2017). 2017, Miami, FL, USA: IEEE.
• Wrobel R, Ayat S, Godbehere J. A systematic experimental approach in deriving stator-winding heat transfer. In: 2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017. 2017, Miami, FL, USA: Institute of Electrical and Electronics Engineers Inc.
• Wrobel R, Ayat S, Baker JL. Analytical methods for estimating equivalent thermal conductivity in impregnated electrical windings formed using Litz wire. In: 2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017. 2017, Miami, FL, USA: Institute of Electrical and Electronics Engineers Inc.
• Wrobel R, Simpson N, Mellor PH, Goss J, Staton DA. Design of a Brushless PM Starter Generator for Low-Cost Manufacture and a High-Aspect-Ratio Mechanical Space Envelope. IEEE Transactions on Industry Applications 2017, 53(2), 1038-1048.
• Godbehere J, Wrobel R, Drury D, Mellor PH. Experimentally Calibrated Thermal Stator Modeling of AC Machines for Short-Duty Transient Operation. IEEE Transactions on Industry Applications 2017, 53(4), 3457-3466.
• Williamson SJ, Wrobel R, Yon J, Booker JD, Mellor PH. Investigation of equivalent stator-winding thermal resistance during insulation system ageing. In: 11th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED 2017). 2017, Tinos, Greece: IEEE.
• Yon JM, Baker JL, Mellor PH, Williamson SJ, Wrobel R. Test characterization of a high performance fault tolerant permanenet magnet machine. In: 2017 IEEE International Electric Machines and Drives Conference (IEMDC 2017). 2017, Miami, FL, USA: IEEE.
• Fatemi A, Ionel DM, Demerdash NAO, Staton DA, Wrobel R, Chong YC. A computationally efficient method for calculation of strand eddy current losses in electric machines. In: ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings. 2016, Milwaukee, WI, USA: Institute of Electrical and Electronics Engineers Inc.
• Simpson N, Wrobel R, Mellor PH. A Multiphysics Design Methodology Applied to a High-Force-Density Short-Duty Linear Actuator. IEEE Transactions on Industry Applications 2016, 52(4), 2919-2929.
• Wrobel R, Williamson SJ, Booker JD, Mellor PH. Characterizing the in situ Thermal Behavior of Selected Electrical Machine Insulation and Impregnation Materials. IEEE Transactions on Industry Applications 2016, 52(6), 4678-4687.
• Williamson SJ, Wrobel R, Booker JD, Yon J, Mellor PH. Effects of insulation ageing on the conductive heat transfer from the winding body into machine periphery/stator core pack. In: IET Conference Publications. 2016, Glasgow, UK: Institution of Engineering and Technology.
• Ayat S, Wrobel R, Goss J, Drury D. Estimation of equivalent thermal conductivity for impregnated electrical windings formed from profiled rectangular conductors. In: IET Conference Publications. 2016, Glasgow, UK: Institution of Engineering and Technology.
• Ayat S, Wrobel R, Goss J, Drury D. Experiment informed methodology for thermal design of PM machines. In: 2016 11th International Conference on Ecological Vehicles and Renewable Energies, EVER 2016. 2016, Monte Carlo, Monaco: Institute of Electrical and Electronics Engineers Inc.
• Ayat S, Wrobel R, Goss J, Drury D. Experimental calibration in thermal analysis of PM electrical machines. In: ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings. 2016, Milwaukee, WI, USA: Institute of Electrical and Electronics Engineers Inc.
• Godbehere J, Wrobel R, Drury D, Mellor PH. Experimentally calibrated thermal stator modelling of AC machines for short-duty transient operation. In: 2016 XXII International Conference on Electrical Machines (ICEM). 2016, Lausanne: Institute of Electrical and Electronics Engineers Inc.
• Simpson N, Wrobel R, Booker JD, Mellor PH. Multi-physics experimental investigation into stator-housing contact interface. In: IET Conference Publications. 2016, Glasgow, UK: Institution of Engineering and Technology.
• Godbehere J, Wrobel R, Drury D, Mellor PH. Salient PM rotor topology selection for a zero-speed injection based sensorless controlled machine. In: 8th IET International Conference on Power Electronics, Machines and Drives (PEMD 2016). 2016, Glasgow, Scotland, UK: Institution of Engineering and Technology.
• Wrobel R, Simpson N. Winding loss separation in thermal analysis of electromagnetic devices. In: 2016 22nd International Conference on Electrical Machines, ICEM 2016. 2016, Lausanne, Switzerland: Institute of Electrical and Electronics Engineers Inc.
• Wu X, Wrobel R, Mellor PH, Zhang C. A Computationally Efficient PM Power Loss Mapping for Brushless AC PM Machines With Surface-Mounted PM Rotor Construction. IEEE Transactions on Industrial Electronics 2015, 62(12), 7391-7401.
• Wrobel R, Williamson SJ, Booker JD, Mellor PH. Characterising the performance of selected electrical machine insulation systems. In: 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015. 2015, Montreal, Canada: Institute of Electrical and Electronics Engineers Inc.
• Godbehere J, Wrobel R, Drury D, Mellor PH. Design methodology of a brushless IPM machine for a zero-speed injection based sensorless control. In: 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015. 2015, Montreal, Canada: Institute of Electrical and Electronics Engineers Inc.
• Wrobel R, Simpson N, Mellor PH, Goss J, Staton DA. Design of a brushless PM starter-generator for low-cost manufacture and a high-aspect-ratio mechanical space envelope. In: 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015. 2015, Montreal, Canada: Institute of Electrical and Electronics Engineers Inc.
• Wrobel R, Williamson SJ, Simpson N, Ayat S, Yon J, Mellor PH. Impact of slot shape on loss and thermal behaviour of open-slot modular stator windings. In: 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015. 2015, Montreal, Canada: Institute of Electrical and Electronics Engineers Inc.
• Simpson N, Wrobel R, Mellor PH. Multi-physics design of high-energy-density wound components. In: 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015. 2015, Montreal, Canada: Institute of Electrical and Electronics Engineers Inc.
• Wrobel R, Staton D, Lock R, Booker J, Drury D. Winding Design for Minimum Power Loss and Low-Cost Manufacture in Application to Fixed-Speed PM Generator. IEEE Transactions on Industry Applications 2015, 51(5), 3773-3782.
• Wrobel R, Mellor PH. Design considerations of a direct drive brushless machine with concentrated windings. IEEE Transactions on Energy Conversion 2008, 23(1), 1-8.
• Wrobel R, McNeill N, Mellor PH. Design of a High-Temperature Pre-Biased Line Choke for Power Electronics Applications. In: PESC Record - IEEE Annual Power Electronics Specialists Conference. 2008, Rhodes, Greece: IEEE.
• Wrobel R, Budded AS, Holliday D, Mellor PH, Sangha P. Design considerations for permanent magnet brushless machines for zero-speed sensorless position estimation. In: Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). 2006, Tampa, FL, USA: IEEE.
• Wrobel R, Mellor PH. Particle swarm optimisation for the design of brushless permanent magnet machines. In: Conference Record - IAS Annual Meeting (IEEE Industry Applications Society). 2006, Tampa, FL, USA: IEEE.
• Wrobel R, Mellor PH. Design considerations of a direct drive brushless PM machine with concentrated windings. In: 2005 IEEE International Conference on Electric Machines and Drives. 2005, San Antonio, TX, USA: IEEE.
• Wrobel R, Mellor PH. The use of a genetic algorithm in the design optimisation of a brushless DC permanent magnet machine rotor. In: Second International Conference on Power Electronics, Machines and Drives (PEMD 2004). 2004, Edinburgh, UK: IET.
• Wrobel R, Lukaniszyn M, Jagiela M, Latawiec K. A new approach to reduction of the cogging torque in a brushless motor by skewing optimization of permanent magnets. Electrical Engineering 2003, 85(2), 59-69.
• Wrobel R, Lukaniszyn M, Mendrela E. 3D space analysis of magnetic field in a brushless DC Torus motor. COMPEL - The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 2000, 19(2), 538-543.