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Contact

Visit Keith Robert Pullen

CG23, Tait Building

Postal Address

City, University of London
Northampton Square
London
EC1V 0HB
United Kingdom

About

Overview

Professor Pullen graduated with 1st Class BEng degree in 1987 in Mechanical Engineering at Imperial College London whilst sponsored by Rolls-Royce (Aero Engines, Derby) on their thick sandwich “Total Technology” Programme. During his time at Rolls-Royce, he earned three prizes including top undergraduate sponsored and top graduate. He was selected by the Director of Design and Technology to undertake a PhD also at Imperial College London on full salary. The subject was micro gas turbines and high speed generators which he completed early 1991. He left the University to join Noble Denton in the field of offshore engineering (1990) working in various projects and locations including Angola, Netherlands and Norway.

In 1992 he returned to Imperial College London as a Lecturer to continue research into high speed electrical machines and develop teaching in gas turbine engineering, design and mechanics. He was promoted to Senior Lecturer in 2001. Concurrently he was a co-founding member of the Turbo Genset Company being employed as Chief of Design in a consultancy role and authored a number of patents which underpinned the core technology. The company, now Turbo Power Systems www.turbopowersystems.com was listed returning several £million back Imperial College London in share sales. The company now goes under the name having over 100 employees. In 2007 he co-founded Dynamic Boosting Systems Ltd www.dynamicboost.comwhose technology is based on the TurboClaw low specific speed compressor which he co-invented with his PhD student. This company currently employs over 10 with the technology being applied in refrigeration and heat recovery. During his time at Imperial College London he also co-founded the spin out Hydroventuri Ltd with the Dept of Physics, set up to exploit low head hydro power technology.

He joined City University London in 2008 as Reader, becoming Professor of Energy Systems in 2010 and developed teaching in automotive engineering including Formula Student and vehicle dynamics as well as creating a number of innovative design projects. After a making a breakthrough in low cost flywheel energy storage rotor construction underpinned by a number of patents, the company Gyrotricity www.gyrotricity.com was founded to become a joint spin out between City University of London and Dynamic Boosting Systems Ltd. This initiative was additionally supported after he won an Enterprise Fellowship from the Royal Academy of Engineering.

Research grants as City University PI include EPSRC funded: SCORE (Thermoacoustic engine), BIPED (Electric vehicle batteries) and VESI (Electric vehicle integration): InnovateUK funded; LCEF (Automotive flywheel-industry lead Nissan), SLaME (Additive manufacture-industry lead Hieta), FCAMS (Fuel cell compressor, industry Lead-DBS): Direct Industry; High speed vacuum cleaner compressors-Shark Ninja, Electric supercharging- AVL, Low specific speed compressors -DBS, LoCoF-Flywheels for rail – RSSB. He has carried out consultancy projects for Nissan, Mercedes Benz F1 HPP, Red Bull F1, PepsiCo, BOC Edwards and BP.

Qualifications

  1. PhD & DIC Mechanical Engineering, Imperial College London, United Kingdom, 1991
  2. BEng Mechanical Engineering Total Technology (Sponsor Rolls Royce plc Derby), Imperial College London, United Kingdom, 1987

Employment

  1. External Examiner, University of Nottingham, Jan 2015 – Jan 2018
  2. Director, Ascending Power Ltd, Jan 2011 – present
  3. Professor, City, University of London, Oct 2010 – present
  4. Reader, City, University of London, Jan 2008 – Sep 2010
  5. Director, Dynamics Boosting Systems Ltd, Jan 2007 – present
  6. Director, Hydroventuri Ltd, Jan 2004 – Jan 2006
  7. Senior Lecturer, Imperial College London, Aug 2001 – Dec 2007
  8. Chief of Design, Turbo Genset Company Ltd, Jan 1994 – Jan 2000
  9. Lecturer, Imperial College London, Sep 1992 – Jul 2007
  10. Engineer, Noble Denton Consultancy Services, Oct 1990 – Aug 1992
  11. Project Engineer, Rolls Royce, Jul 1987 – Sep 1990
  12. Undergraduate Apprentice Engineer, Rolls Royce, Oct 1983 – May 1987

Memberships of professional organisations

  1. Fellow, Institution of Mechanical Engineers, 2009 – present
  2. Lifelong Fellow, Esso Teaching Fellow, 1997 – present
  3. Chartered Engineer, Engineering Council CEng
  4. Enterprise Fellow, Royal Academy of Engineering

Research

Research Interests

- Electrically driven flywheel energy storage systems
- Low carbon power generation and heat pumps
- Small scale electrically driven turbo compressors and turbo expanders
- Energy and transport technologies for developing countries (rural)

Research Students

Mustafa Amiryar

Attendance: 2019

Thesis title: An Assessment of Flywheel Storage for Efficient Provision of Reliable Power for Residential Premises in Islanded Operation

Ruth Cattell

Attendance: 2019

Thesis title: An Experimental Investigation in to a Highly Forward Swept, Low Specific Speed Turbocompressor

Aditya Dhand

Attendance: 2015

Thesis title: Design of electric vehicle propulsion system incorporating flywheel energy storage

Further information: Research and modelling of electric vehicles with flywheels in for overall cost reduction and increase of battery life.

Maryam Lamere

Attendance: 2014

Thesis title: Low Cost Metallic flywheel for developing countries (MPhil)

Further information: Techno-economic modelling of small scale electrical power systems with kinetic energy storage.

Robert Edwards

Attendance: 2013

Thesis title: Optimisation of a novel gyroscopic wave energy converter

Michael Vick

Attendance: 2012

Thesis title: Micro Turbine applications in Unmanned Aviation Vehicles

Matthew Read

Attendance: 2011

Thesis title: Flywheel Energy Storage Systems for Rail (Joint with Prof R Smith)

Sebastian Tsakok

Attendance: 2010

Thesis title: Windage losses in the air gap of a high speed generator

Pablo Martinez

Attendance: 2010

Thesis title: A study on the integration of a high speed flywheel as an energy storage device in hybrid vehicles

David Howey

Attendance: 2010

Thesis title: Low cost axial flux generators for the developing world

Ulises Diego-Ayala

Attendance: 2007

Thesis title: Simulation of a flywheel based hybrid powertrain for automotive application

Andrew Vine

Attendance: 2006

Thesis title: The aerodynamic Design and Evaluation of a low specific speed turbocompressor

Warren Thornton

Attendance: 2006

Thesis title: A low specific speed, multistage, Turbocompressor for microturbine fuelling

Sejul Shah

Attendance: 2006

Thesis title: The Design and Development of a high speed composite flywheel for hybrid vehicles

Alan Walker

Attendance: 2006

Thesis title: Axial Flux Permanent Magnet Synchronous Electric Machines for Hybrid Electric Vehicle Powertrains

Deborah Andrews

Attendance: 2006

Thesis title: Life assessment and the design of ultra-low and zero emission vehicles in the UK (supervised following retirement of Dr P Ewing)

Shinri Szymko

Attendance: 2006

Thesis title: The Development of any eddy current dynamometers for the evaluation of pulsating turbocharger turbine performance (Joint with Prof R Martinez-Botas)

Keith Buffard

Attendance: 2005

Thesis title: The design and development of a novel intercooled compressor for a highly efficient microturbine generator

Mohammed Azree

Attendance: 2004

Thesis title: A numerical and computational investigation into the discharge coefficients of rotating orifices

Raymond Toh

Attendance: 2003

Thesis title: Structural analysis methodologies for high speed composite discs

David Barnes

Attendance: 2001

Thesis title: Design of air cooling systems for high speed electrical machines

Sergio Romero-Hernandez

Attendance: 2001

Thesis title: Determination of windage losses on high speed enclosed rotating discs with superimposed flow (Joint with Dr S Etemad)

Ross Waring

Attendance: 1999

Thesis title: Turbogenerator Application to Hybrid Vehicles

Zain Razali

Attendance: 1998

Thesis title: An investigation of a Vacuum Pump Based on Hydrodynamic Principles

Sameer Kulkarni

Attendance: 1997

Thesis title: The design of permanent magnet axial flux generators

Nurul Abedin

Thesis title: An analytical and experiment investigation into high speed rotating laminated structures

Tariq Darwish

Thesis title: Research investigation and optimisation of small, high speed turbo compressors

Abid Soomro

Thesis title: An investigation of Induction Machine driven Flywheel Energy Storage Systems for Micro Grid Application

Publications

Chapters (6)

  1. Kitade, S. and Pullen, K. (2018). 3.20 Flywheel. Comprehensive Composite Materials II (pp. 545–555). Elsevier. ISBN 978-0-08-100534-7.
  2. Pullen, K.R. and Dhand, A. (2014). Mechanical and electrical flywheel hybrids. Alternative fuels and advanced vehicle technologies for improved environmental performance: Towards zero carbon transportation Woodhead. ISBN 978-0-85709-522-0.
  3. Pullen, K.R. and Dhand, A. (2014). Mechanical and electrical flywheel hybrid technology to store energy in vehicles. Alternative Fuels and Advanced Vehicle Technologies for Improved Environmental Performance: Towards Zero Carbon Transportation (pp. 476–504). ISBN 978-0-85709-522-0.
  4. Pullen, K.R., Martinez-Botas, R. and Buffard,, K. (2002). Design Problems in Micro Turbine Generators. In M J Moore, (Ed.), Micro Turbine Generators Professional Engineering Publishing Limited. ISBN 1-86058-391-1.
  5. Romero-Hernandez, S., Campos-Mejuto, F.J. and Pullen, K.R. (2002). Prediction of Aerothermal Phenomena in High Speed Disc-Stator Systems. Advances of CFD in Fluid Machinery Design Professional Engineering Publishing. ISBN 1-86058-353-9.
  6. Romero-Hernandez, S., Etemad, M.R. and Pullen, K.R. (2000). Numerical Determination of Windage Losses on High-Speed Rotating Discs. In Rhodes, N. (Ed.), Computational Fluid Dynamics in Practice Professional Engineering Publishing.

Conference papers and proceedings (70)

  1. Soomro, A., Amiryar, M.E., Pullen, K.R. and Nankoo, D. (2018). Comparison of performance and controlling schemes of synchronous and induction machines used in flywheel energy storage systems.
  2. Pullen, K.R., Read, M., Sellick, R., Fenocchi, A. and Etemad, S. (2017). LoCoFlyER - Low cost flywheels for efficient railways.
  3. Parra, J., Cattell, R., Etemad, S. and Pullen, K.R. (2015). Performance Measurements of a Low Specific Speed TurboClaw® Compressor.
  4. Yoheswaran, B., Pullen, K.R. and IEEE, (2014). Flow and Convective Heat Transfer in Disk-Type Electric Machines with Coolant Flow.
  5. Arjeneh, M., Pullen, K.R. and Etemad, S. (2013). Experimental study of radial low specific speed turbocompressor running in reverse as turboexpander.
  6. Pullen, K.R., Grigorchenkov, I. and Johnson, D. (2012). Evaluation of mobile and stationary applications of energy storage for DC railways and rapid transit. RRUKA Annual Conference 2012 7 November, Royal Society, London, UK.
  7. Pullen, K.R., Etemad, S, and Cattell, R, (2012). Experimental investigation of the TurboClaw low specific speed compressor. ASME International Gas Turbine Institute June, Copenhagen, Denmark.
  8. Vocale, P., Dennis, R. and Pullen, K.R. (2012). The SCORE Project: Stove for Cooking, Refrigeration and Electricity. V Congresso Nazionale AIGE June, Modena, Italy.
  9. Pullen, K.R., Etemad, S., Thornton, W.E. and Villegas, J. (2012). The TurboClaw Compressor for Engine Downsizing by Twin-charging. 10th International Conference on Turbochargers and Turbocharging May, Institution of Mechanical Engineers, London.
  10. Pullen, K.R., Etemad, S., Thornton, W. and Villegas, J. (2012). Electrically driven supercharger using the TurboClaw® compressor for engine downsizing.
  11. Grigorchenkov, I., Pullen, K.R. and Johnson, D. (2012). Modelling energy system impacts of flywheel uptake in rail transport. Universities Transport Study Group 43rd Annual Conference January, Milton Keynes, UK.
  12. Dennis, R. and Pullen, K.R. (2011). Improving Access to Emergency Health Facilities in Rural Areas of Sub Saharan Africa. Appropriate Healthcare for Developing Countries November, Institution of Mechanical Engineers, London.
  13. Pullen, K.R. and Dennis, R. (2011). Developing Technologies at City University. International Conference in Engineering and Product Design Education September, london.
  14. Vick, M.J., Jadaan, O.M., Wereszczak, A.A., Choi, S.R., Heyes, A.L. and Pullen, K.R. (2011). Engine design strategies to maximize ceramic turbine life and reliability.
  15. Howey, D.A., Holmes, A.S. and Pullen, K.R. (2010). Prediction and Measurement of Heat Transfer in Air-Cooled Disc-Type Electrical Machines. Paper 51 ,PEMD 5th IET International Conference on Power Electronics, Machines and Drives April, Brighton, UK.
  16. Howey, D.A., Holmes, A.S. and Pullen, K.R. (2009). Measurement of stator heat transfer in air-cooled axial flux permanent magnet machines. 35th Annual Conference of the IEEE Industrial Electronics Society November, Porto.
  17. Pullen, K.R., Etemad, S., Vine, A.J., Thornton, W.E. and Turboclaw, (2009). A low cost turbocompressor solution for fuel cells and other applications. International Conference on Compressors and their Systems September, IMechE London.
  18. Vick, M.J., Heyes, A. and Pullen, K.R. (2009). Design Overview of a Three-Kilowatt Recuperated Ceramic Turboshaft Engine. 8-12 June, Orlando, Florida.
  19. Pullen, K.R. and Dennis, R. (2009). A Case Study of Drilling Water Wells Illustrating the work of Developing Technologies. EWB-UK Research Conference February, Royal Academy of Engineering, London.
  20. Pullen, K.R., Etemad, S., Vine, A.J. and Thornton, W.E. (2009). Turboclaw - A low cost turbocompressor solution for fuel cells and other applications.
  21. Pullen, K.R. and Diego-Ayala Martinez-Gonzalez, P. (2008). A Simple Mechanical Transmission System for Hybrid Vehicles incorporating a Flywheel. December, Warwick.
  22. Pullen, K.R. and Ellis, C.H.W. (2008). The Vehicle as Kinetic Energy System. ATZ Auto Technology October.
  23. Pullen, K.R. and Ellis, C. (2006). Kinetic Energy Storage for Vehicles. IET and IMechE Hybrid Vehicles Conference December, PARD, Warwick University.
  24. Idris, M. and Pullen, K.R. (2006). The Effect of Pre-swirl on the Discharge Coefficient of Rotating Axial Orifices. International Conference on Energy and Environment (ICEE 2006) 28-30 August, Selangor, Malaysia.
  25. Kahn, P. and Pullen, K.R. (2006). Realistic student enquiries and capacity building for engineering solutions to world poverty. The International Conference on Innovation, Good Practice and Research in Engineering Education.
  26. Vine, A., Thornton, W., Pullen, K.R. and Etemad, M. (2005). Compact air compressor for transport applications. October, London, England.
  27. Vine, A.J., Thornton, W.E., Pullen, K.R. and Etemad, M.R. (2005). Low specific speed turbo-compressors. September, IMechE London.
  28. Pullen, K.R., Pang, A.J., Desmulliez, M.P.Y., Leonard, M., Dhariwal, R.S., Reuben, R.L. … Barber, R.W. (2004). Design, manufacture and testing of a low-cost micro-channel cooling device. 6th Electronics Packaging Technology Conference (EPTC 2004) 8-10 December, Singapore.
  29. Pullen, K.R., Pang A.J., , Desmulliez, M.P.Y., Leonard M., , Dhariwal R.S., , Reuben R.L., … Barber R.W., (2004). Modelling, manufacture and test of a microchannel cooling plate for microelectronics packaging. 6th Electronics Material and Packaging Conference (EMAP 2004) 5-7 December, Penang, Malaysia.
  30. Pullen, K.R., Diego-Ayala, U., Shah, S., Chicurel, R., Carmono, G. and aGonzalez, (2004). A study on regenerative braking for a hydro-pneumatic electric hybrid vehicle by means of simulation. Inst of Elec and Electronic Engrs Vehicle and Propulsion Power Symposium October, Paris.
  31. Holmes, A.S., Hong, G., Pullen, K.R. and Buffard, K.R. (2004). Axial-flow microturbine with electromagnetic generator: design, CFD simulation and prototype demonstration. 25-29 January, Maastricht, The Netherlands.
  32. Idris, A., Pullen, K.R. and Read, R. (2004). The influence of incidence angle on the discharge coefficient for rotating radial orifices. Vienna, Austria.
  33. Pullen, K.R., Shah, S. and Diego-Ayala, U. (2004). Mechanical Energy Storage Hybrid – Simulation and Life cycle costs. 2004 European ELE-DRIVE Transportation conference Cascais, Portugal.
  34. Ellis, C. and Pullen, K.R. (2004). Regenerative Braking for Strong Hybrids. Paper F2004F113 FISITA World Automotive Conference Barcelona.
  35. Holmes, A.S., Heaton, M.E., Hong, G., Pullen, K.R. and Rumsby, P.T. (2003). Laser profiling of 3-D microturbine blades. 21-24 June, Munich, Germany.
  36. Hong, G., Holmes, A.S., Heaton, M.E. and Pullen, K.R. (2003). Design, fabrication and characterization of an axial-flow turbine for flow sensing. Proc. Transducers '03 8-12 June, Boston MA, USA.
  37. Vine, A.J., Thornton, W.E., Pullen, K.R. and Etemad, M.R. (2003). Low specific speed turbo-compressor. IMechE International Conference – Compressors and their Systems London, England.
  38. Pullen, K.R., Szymko, S. and Martinez-Botas, R. (2002). A high-speed, permanent magnet eddy-current dynamometer for turbocharger research. Turbochargers and turbocharging VII: 7th international conference May, London, England.
  39. Pullen, K.R., Campos-Mejuto, F.J. and Romero-Hernández, S. (2001). Prediction of Aerothermal Phenomena in High-Speed Disc-Stator Systems. Conference in Computational Methods in Engineering IMechE.
  40. Pullen, K.R., Martinez Botas, R. and Buffard, K. (2000). Design Problems for Micro Turbine Generators. IMechE Conference December, London.
  41. Lamperth, M.U., Pullen, K.R. and Mueller, K.G. (2000). Turbogenerator based Hybrid Verses Dieselelectric Hybrid.
  42. Court, A.W., Pullen, K.R. and Besant, C.B. (1999). Small Gas Turbine Design: A total technology experience. 3rd European Conference on Turbomachinery – Inst. Mech Engrs London, England.
  43. Pullen, K.R., Etemad, M.R. and Fenocchi, A. (1999). A robust high speed electrical machine for compact compressors and gas expanders. IMechE International Conference – Compressors and their systems London, England.
  44. Pullen, K.R. and Lamperth, M.U. (1999). How size and Performance of Hybrid Electric Vehicle Components are Influenced by Acceleration Patterns. SAE Technical Paper Series 1999-01-2909 Fuel Transport Technology California.
  45. Lamperth, M.U. and Pullen, K.R. (1999). Impact of Acceleration Patterns on Size and Performance of Hybrid Electric Vehicle Components. Florence, Italy.
  46. Pullen, K.R., Mansir, H. and Fenocchi, A. (1999). High Power Air Cooled Motor Generators for Automotive Applications. Electric Machine Design for all-electric and hybrid electric vehicles - IEE London, England.
  47. Pullen, K.R. and Khalif, S. (1999). On the application of Turboboosters for Series Hybrid Electric Vehicles. IMechE AUTOTECH 99 Paper C575-5 Birmingham, England.
  48. Pullen, K.R., Romero-Hernandez, S. and Etemad, M.R. (1999). Numerical Determination of Windage Losses on High-Speed Rotating Discs. Computational Fluid Dynamics : Technical Developments and Future Trends Conference IMechE, London.
  49. Pullen, K.R., Court, A.W. and Besant, C.B. (1998). The Advanced Turbogenerator Project – A total technology education experience for engineering undergraduate students. ASME IGTI Paper 98-GT-23 Stockholm, Sweden.
  50. Pullen, K.R., Lampérth, M.U. and Etemad, M.R. (1998). A parametric optimisation study of diesel and gas turbine series hybrid electric vehicles. Paper 98EL040–31st ISATA Dusseldorf.
  51. Pullen, K.R., Etemad, M.R. and Lamperth, M.U. (1997). A description of a performance simulation methodology and software for electric and hybrid vehicles. Florence, Italy.
  52. Lamperth, M.U., Pullen, K.R. and Etemad, M.R. (1997). Development of an analysis software to allow electromechanical battery modelling for electric and hybrid vehicles. Florence, Italy.
  53. Court, A.W., Pullen, K.R. and Besant, C.B. (1997). Integrating multiple engineering departments and industry in undergraduate design projects. International conference on engineering design Tampere, Finland.
  54. Besant, C.B., Pullen, K.R., Etemad, M.R., Leontopoulos, C. and Lamperth, M.U. (1997). Application of Turbogenerators to Hybrid Electric Vehicles. IMechE Paper C524/185/97 AUTOTECH 97 Birmingham.
  55. Pullen, K.R., M R Etemad, , C Leontopoulos, and R Waring, (1997). Gas Turbine engines for hybrid vehicles. ISATA magazine January.
  56. Pullen, K.R., Etemad, M.R., Leontopoulos, C. and Waring, R. (1996). Development of a Small Gas Turbine Engine for Series Hybrid Electric Vehicles. Florence, Italy.
  57. Etemad, M.R., Pullen, K.R., Fenocchi, A., Hall, J.A. and Green, T. (1996). The High Speed Disc Generator - Development Progress. Florence, Italy.
  58. Martinez-Botas, R.F., Pullen, K.R. and Shi, F. (1996). Numerical Calculations of a turbine volute using a 3D Navier-Stokes Solver. ASME 96-GT-66 - International Gas Turbine and Aeroengine Congress Birmingham, England.
  59. Pullen, K.R., Etemad, M.R. and Fenocchi, A. (1996). The high speed axial flux disc generator - unlocking the potential of the automotive gas turbine. Machines and drives for electric and hybrid vehicles - IEE London.
  60. Etemad, M.R. and Pullen, K.R. (1995). Further Developments of a Gas Turbine Series Hybrid for Automotive Use. Paper SIA9506A22 - 5th International EAEC Conference of Powertrain and the Environment Strasbourg.
  61. Etemad, M.R., Fenocchi, A., Hall, J.A. and Pullen, K.R. (1995). Turbogenerators; a new way forward. IMechE Paper C498/29/079 AUTOTECH 95 Birmingham.
  62. Pullen, K.R. (1994). Magnetic couplings. March, Banbury.
  63. Liebenburg, L., Nel, A. and Pullen, K.R. (1994). Computer Simulation of Electric, Gas Turbine and Gas Turbine Hybrid Electric Vehicles. SAE Paper 941733 – SAE International Off-Highway and Powerplant Congress and Exposition Milwuakee, Wisconsin.
  64. Pullen, K.R., Martinez-Botas, R. and Leontopoulos, C. (1994). Factors influencing the Choice of Gas Turbine Engine for Series Hybrid Electric Vehicles. Aachen, Germany.
  65. Pullen, K.R., MEtemad, M.R., Fenocchi, A. and Hall, J.A. (1994). An Evaluation of High Speed Generators. Aachen, Germany.
  66. Etemad, M.R., Fenocchi, A., Hall, J. and Pullen, K.R. (1993). Hybrid Turbogenerator Vehicle (HTV). Paper 93EL021 ,26th ISATA conference proceedings September, Aachen, Germany.
  67. Pullen, K.R., Baines, N.C. and Hill, S. (1992). The Design and Evaluation of a High Pressure Ratio Radial Turbine.
  68. Karal, K., Pullen, K.R., Skjong, J. and Vinje, T. (1992). Lowering of Subsea Structures by Guided Fall Along a Circuituous Trajectory. San Francisco.
  69. Pullen, K.R. (1992). A Case for the Gas Turbine Series Hybrid.
  70. Dhand, A. and Pullen, K. Characterization of Flywheel Energy Storage System for Hybrid Vehicles. SAE 2014 World Congress & Exhibition.

Journal articles (46)

  1. Mahmoud, M., Ramadan, M., Naher, S., Pullen, K., Baroutaji, A. and Olabi, A.-.G. (2020). Recent advances in district energy systems: A review. Thermal Science and Engineering Progress, 20, pp. 100678–100678. doi:10.1016/j.tsep.2020.100678.
  2. Mahmoud, M., Ramadan, M., Naher, S., Pullen, K. and Olabi, A.-.G. (2020). The impacts of different heating systems on the environment: A review. Science of The Total Environment pp. 142625–142625. doi:10.1016/j.scitotenv.2020.142625.
  3. Amiryar, M.E. and Pullen, K.R. (2020). Analysis of standby losses and charging cycles in flywheel energy storage systems. Energies, 13(17). doi:10.3390/en13174441.
  4. Riley, P.H., Pullen, K., Dordevic, O., DeLilo, L. and De Giorgio, M. (2020). A Qualitative Assessment of a Modified Multilevel Converter Topology M2LeC for Lightweight Low-cost Electric Propulsion. Engineering.
  5. Mahmoud, M., Ramadan, M., Olabi, A.-.G., Pullen, K. and Naher, S. (2020). A review of mechanical energy storage systems combined with wind and solar applications. Energy Conversion and Management, 210, pp. 112670–112670. doi:10.1016/j.enconman.2020.112670.
  6. Soomro, A., Amiryar, M.E., Nankoo, D. and Pullen, K.R. (2019). Performance and loss analysis of squirrel cage induction machine based flywheel energy storage system. Applied Sciences (Switzerland), 9(21). doi:10.3390/app9214537.
  7. Amiryar, M.E. and Pullen, K.R. (2019). Assessment of the carbon and cost savings of a combined diesel generator, solar photovoltaic, and flywheel energy storage islanded grid system. Energies, 12(17). doi:10.3390/en12173356.
  8. Khoshkalam, N., Mojaddam, M. and Pullen, K.R. (2019). Characterization of the Performance of a Turbocharger Centrifugal Compressor by Component Loss Contributions. Energies, 12(14), pp. 2711–2711. doi:10.3390/en12142711.
  9. Pullen, K.R. (2019). The Status and Future of Flywheel Energy Storage. Joule, 3(6), pp. 1394–1399. doi:10.1016/j.joule.2019.04.006.
  10. Mojaddam, M. and Pullen, K. (2019). Optimization of a Centrifugal Compressor Using the Design of Experiment Technique. Applied Sciences, 9(2), pp. 291–291. doi:10.3390/app9020291.
  11. Amiryar, M.E., Pullen, K.R. and Nankoo, D. (2018). Development of a high-fidelity model for an electrically driven energy storage flywheel suitable for small scale residential applications. Applied Sciences (Switzerland), 8(3). doi:10.3390/app8030453.
  12. Dennis, R. and Pullen, K. (2017). Vehicles for rural transport services in sub-Saharan Africa. Proceedings of the Institution of Civil Engineers - Transport, 170(6), pp. 321–327. doi:10.1680/jtran.15.00081.
  13. Amiryar, M.E. and Pullen, K.R. (2017). A review of flywheel energy storage system technologies and their applications. Applied Sciences, 7(3). doi:10.3390/app7030286.
  14. Pullen, K.R., Read, M., Sellick, R., Fenocchi, A. and Etemad, S. (2016). Efficiency Benefits from the Deployment of a
    Novel Flywheel Solution for Non-Electrified Lines.
    International Journal of Railway Technology, 5(4), pp. 79–100. doi:10.4203/ijrt.5.4.4.
  15. Dhand, A. and Pullen, K. (2016). Analysis of Dual Mode Continuously Variable Transmission for Flywheel Energy Storage Systems. SAE Technical Paper Series. doi:10.4271/2016-01-1177.
  16. Dhand, A. and Pullen, K. (2015). Optimal energy management for a flywheel-assisted battery electric vehicle. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 229(12), pp. 1672–1682. doi:10.1177/0954407014567720.
  17. Dhand, A. and Pullen, K. (2015). Review of battery electric vehicle propulsion systems incorporating flywheel energy storage. International Journal of Automotive Technology, 16(3), pp. 487–500. doi:10.1007/s12239-015-0051-0.
  18. Dhand, A. and Pullen, K. (2015). Analysis of continuously variable transmission for flywheel energy storage systems in vehicular application. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE, 229(2), pp. 273–290. doi:10.1177/0954406214533096.
  19. Read, M.G., Smith, R.A. and Pullen, K.R. (2015). Optimisation of flywheel energy storage systems with geared transmission for hybrid vehicles. Mechanism and Machine Theory, 87, pp. 191–209. doi:10.1016/j.mechmachtheory.2014.11.001.
  20. Dennis, R. and Pullen, K. (2013). Development of a wood-fired cooking stove to incorporate a thermo-acoustic engine-generator unit. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 227(7), pp. 740–751. doi:10.1177/0957650913498735.
  21. Dhand, A. and Pullen, K.R. (2013). Review of Flywheel based Internal Combustion Engine Hybrid Vehicles. International Journal of Automotive Technology, 14(5), pp. 797–804. doi:10.1007/s12239-013-0088-x.
  22. Sanchez, T., Dennis, R. and Pullen, K.R. (2013). Cooking and lighting habits in rural Nepal and Uganda. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 227(7), pp. 727–739. doi:10.1177/0957650913498872.
  23. Dhand, A. and Pullen, K. (2013). Simulation based study of battery electric vehicle performance in real world cycles. International Journal of Electric and Hybrid Vehicles, 5(4), pp. 327–327. doi:10.1504/ijehv.2013.059372.
  24. Chen, B.M., Riley, P.H., Abakr, Y.A., Pullen, K., Hann, D.B. and Johnson, C.M. (2013). Design and development of a low-cost, electricity-generating cooking Score-Stove™. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 227(7), pp. 803–813. doi:10.1177/0957650913498733.
  25. Vick, M.J., Jadaan, O.M., Wereszczak, A.A., Choi, S.R., Heyes, A.L. and Pullen, K.R. (2012). Engine design strategies to maximize ceramic turbine life and reliability. Journal of Engineering for Gas Turbines and Power, 134(8). doi:10.1115/1.4005817.
  26. Howey, D.A., Holmes, A.S. and Pullen, K.R. (2011). Measurement and CFD Prediction of Heat Transfer in Air-Cooled Disc-Type Electrical Machines. IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 47(4), pp. 1716–1723. doi:10.1109/TIA.2011.2156371.
  27. Vick, M.J., Heyes, A. and Pullen, K. (2010). Design overview of a three kilowatt recuperated ceramic turboshaft engine. Journal of Engineering for Gas Turbines and Power, 132(9). doi:10.1115/1.4000585.
  28. Howey, D.A., Holmes, A.S. and Pullen, K.R. (2010). Radially resolved measurement of stator heat transfer in a rotor-stator disc system. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 53(1-3), pp. 491–501. doi:10.1016/j.ijheatmasstransfer.2009.09.006.
  29. Pullen, K.R., Howey, D.A. and Holmes, A.S. (2010). Radially resolved measurement of stator heat transfer in a rotor-stator disc system. International Journal of Heat and Mass Transfer, 53, pp. 491–501.
  30. Read, M.G., Smith, R. and Pullen, K.R. (2009). Are Flywheels Right for Rail? International Journal of Railway, 2(4), pp. 139–146.
  31. Howey, D.A. and Pullen, K.R. (2009). Hydraulic air pumps for low-head hydropower. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY, 223(A2), pp. 115–125. doi:10.1243/09576509JPE645.
  32. Vick, M.J., Heyes, A. and Pullen, K. (2009). Design overview of a three-kilowatt recuperated ceramic turboshaft engine. Paper GTP-09-1049 ASME Journal of Engineering for Gas Turbines and Power, 5.
  33. Diego-Ayala, U., Martinez-Gonzalez, P., McGlashan, N. and Pullen, K.R. (2008). The mechanical hybrid vehicle: an investigation of a flywheel-based vehicular regenerative energy capture system. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING, 222(D11), pp. 2087–2101. doi:10.1243/09544070JAUTO677.
  34. Romero-Hernandez, S., Romero-Hernandez, O. and Pullen, K.R. (2008). Diseno de un dispositivo experimental papa medicion de perdidas aeroinamicas en discos girando a alta velocidad. Proceedings of the Mexican Society of Mechanical Engineers, 2(6), pp. 185–192.
  35. Pullen, K.R. and Howey, D.A. (2008). Hydraulic air pumps for low-head hydropower. IMechE Journal Power and Energy (Part A), 223, pp. 115–125.
  36. Kahn, P. and Pullen, K.R. (2007). Realistic student enquiries, global challenges and the role of a development charity. Journal of the Higher Education Academy, 2(2).
  37. Szymko,, S., McGlashan, N.R., Martinez-Botas, R. and Pullen, K.R. (2007). The development of a dynamometer for torque measurement of automotive turbocharger turbines. P I MECH ENG D-J AUT, 221, pp. 225–239.
  38. Holmes, A.S., Hong, G. and Pullen, K.R. (2005). Axial-flux, permanent magnet machines for micropower generation. IEEE/ASME J. Microelectromechanical Systems, 14(1), pp. 54–62.
  39. Idris, A. and Pullen, K.R. (2005). Correlations for the discharge coefficient of rotating orifices based on incidence angle. Part A: Journal of Power and Energy, 219, pp. 333–352.
  40. Idris, A., Pullen, K.R. and Barnes, D. (2004). An Investigation into the Flow within Inclined Rotating Orifices and the Influence of Incidence Angle on the Discharge Coefficient. Part A: Journal of Power and Energy, 218.
  41. Panting, J., Pullen, K.R. and Martinez-Botas, R. (2001). Turbocharger Motor-Generator for Improvement of Transient Performance in an Internal Combustion Engine. Journal of Automobile Engineering,– Proc Instn Mech Eng Part D, 215, pp. 369–383.
  42. Panting, J. and Pullen, K.R. (2000). Thermodynamic studies of a novel aero engine concept. Journal of Aerospace Engineering,– Proc Instn Mech Eng Part G, 210, pp. 71–83.
  43. Court, A.W., Pullen, K.R. and Besant, C.B. (1999). Small Gas Turbine Design: A total technology experience. ” Proc. Instn. Mech. Engrs., Part A: Journal of Power and Energy, 213, pp. 339–347.
  44. Leontopoulos, C., Pullen, K.R., Etemad, M.R. and Lamperth, M.U. (1998). Hybrid Vehicle simulation for a turbo-generator based powertrain. Journal of Automobile Engineering, Proc Instn Mech Eng Part D, 212 Part D, pp. 357–368.
  45. Waring, R., Hall, J., Pullen, K.R. and Etemad, M.R. (1996). An Investigation of Face Type Magnetic Couplers. Journal of Power and Energy Part A – Proc Instn Mech Eng, 210, pp. 263–272.
  46. Etemad, M.R., Pullen, K.R., Besant, C.B. and Baines, N.C. (1992). Evaluation of windage losses for high speed disc machinery. Proc. Instn. Mech. Engrs., Part A: Journal of Power and Energy, 206, pp. 149–157.

Patents (38)

  1. Pullen, K.R. and Hammerbeck, J. (2009). Active Cooling. Patent no. GB0916737.0
  2. Pullen, K.R. (2008). Low cost energy storage flywheel. Patent no. WO Patent WO/2008/071,955
  3. MDraper, M., Pullen, K.R. and Buffard, K. (2006). Wave Energy Converter with Air Compression (WECWAC).
  4. Pullen, K.R. and Shah, S. (2006). Flywheel Rotor.
  5. Pullen, K.R., Barnes, D., Besant, T. and Demargne, A. (2005). Heat exchanger.
  6. Vine, A. and Pullen, K.R. (2004). High forward sweep compressor(High forward sweep compressor). Patent no. PCT/GB2004/003752
  7. Pullen, K.R. and Hall, J. (2001). Improved Stator Cooling(Multi-path convoluted stator channels ). Patent no. GB Application number 0117556.1
  8. Pullen, K.R., Etemad, M. and Fenocchi, A. (2001). Stator Winding(Flattened bridged stator winding ). Patent no. GB Application number 0126758.2
  9. Pullen, K.R., Etemad, M. and Fenocchi, A. (2001). Stator Winding(Flattened bridged stator winding ). Patent no. US Application number 10/290,025
  10. Pullen, K.R., Ahsan, A. and Waring, R. (2000). Stator Support(Axial Field Electrical Generators). Patent no. PCT/GB01/00451
  11. Pullen, K.R., Horton, K., Etemad, M., Fenocchi, A., Eggleston, L. and Bolton, H. Axial Field Electrical Generator(Axial Field Electrical Generator). Patent no. US patent 5 021 689
  12. Pullen, K.R., Fenocchi, A., Etemad, M., Ristic, M. and Besant, C. Keeper discs and air cooling(Axial Field Electrical Generators). Patent no. British Patent GB 2 261 327 B
  13. Pullen, K.R., Fenocchi, A., Besant, C., Etemad, M. and Ristic, M. Stator Cooling: airflow from rim to centre(Axial Field Electrical Generators). Patent no. British patent GB 2 289 576 B
  14. Pullen, K.R., Fenocchi, A., Besant, C., Etemad, M. and Ristic, M. Non hoop carbon fibre windings(Axial Field Electrical Generators). Patent no. British patent GB 2 289 802 B
  15. Pullen, K.R., Ristic, M., Etemad, M. and Besant, C. Hydraulic explansion of retention ring(Axial Field Electrical Generators). Patent no. British patent GB 2 278 504 B
  16. Pullen, K.R. and Kulkarni, K. Low cost Automotive Alternator(Low cost Automotive Alternator). Patent no. US Patent 5,962,942
  17. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Air cooling/Ground down button magnets/Spiral coils(Axial Field Electrical Generators). Patent no. European Patent EP 96919938.9(EP-0829126)
  18. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Air cooling/Ground down button magnets/Spiral coils(Axial Field Electrical Generators). Patent no. US Patent US RE 37844
  19. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Air cooling/Ground down button magnets/Spiral coils(Axial Field Electrical Generators). Patent no. European Patent EP 98115766.2(EP-0887911)
  20. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Air cooling/Ground down button magnets/Spiral coils(Axial Field Electrical Generators). Patent no. US Patent US 6,424,069
  21. Pullen, K.R., Etemad, M.R., Fenocchi, A. and Hall, J.A. Liquid cooling(Axial Field Electrical Generators). Patent no. European Patent EP 97934660.8(EP-0917757)
  22. Pullen, K.R., Etemad, M.R., Fenocchi, A. and Hall, J.A. Liquid cooling(Axial Field Electrical Generators). Patent no. US Patent US 6,304,011
  23. Pullen, K.R., Etemad, M.R., Fenocchi, A. and Hall, J.A. External interference fit(Axial Field Electrical Generators). Patent no. European Patent EP 97934661.6(EP-0917756)
  24. Pullen, K.R., Etemad, M.R., Fenocchi, A. and Hall, J.A. External interference fit(Axial Field Electrical Generators). Patent no. US Patent US 6,195,869
  25. Pullen, K.R. Variable airgap(Variable airgap generator). Patent no. US Patent US 6,404,097
  26. Pullen, K.R. and Hall, J. Improved Stator Cooling(Multi-path convoluted stator channels ). Patent no. US Patent US 6,798,097 B2
  27. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Ground down button magnets(Axial Field Electrical Generators). Patent no. US RE 37844
  28. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Ground down button magnets(Axial Field Electrical Generators). Patent no. European Patent EP 96919938.9 (EP-0829126)
  29. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Air cooling(Axial Field Electrical Generators). Patent no. European Patent EP 98115766.2 (EP-0887911)
  30. Pullen, K.R., Etemad, M.R. and Fenocchi, A. Air cooling(Axial Field Electrical Generators). Patent no. US 09/468,997 (US-6,424,069)
  31. Pullen, K.R., Horton, K., Etemad, M., Fenocchi, A., Eggleston, L. and Bolton, H. Axial Field Electrical Generator(Field Electrical Generator). Patent no. British patent GB 2 222 031 B
  32. Pullen, K.R., Etemad, , Fenocchi, M. and Eggleston, L. Axial Field Electrical Generator(Axial Field Electrical Generator). Patent no. European patent EP 0 353 042-B
  33. Pullen, K.R., Horton, K., Etemad, M., Fenocchi, A., Eggleston, L. and Bolton, H. Axial Field Electrical Generator(Axial Field Electrical Generator). Patent no. Japanese Patent JP 2705982
  34. Pullen, K.R. Regenerative compressor. Patent no. GB 2366333
  35. Pullen, K.R., Rochester, G. and Hassard, J. Rochester Venturi(Apparatus for Extracting Power from a Fluid Flow). Patent no. PCT/GB/2003/001171
  36. Rochester, G. and Pullen, K.R. Rochester Venturi - Vortex(Apparatus for Extracting Power from a Fluid Flow). Patent no. PCT/GB/2003/001173
  37. Pullen, K.R. Low grade heat electrical generator.
  38. Pullen, K.R., Horton, K., Etemad, M., Fenocchi, A., Eggleston, L. and Bolton, H. Axial Field Electrical Generator. Patent no. US patent 5 021 689

Education

- Module Leader for BEng and MEng Design - 60 students including responsibility for Formula Student, Grid Stability Flywheel and Developing Technologies Design projects
- Module Leader for Vehicle Dynamics Part 3 and Part 4
- Teaching ½ Module on Vehicle Powertrain
- Part 2 introduction to Vehicle Dynamics
- Devised and run "Wind Design Challenge" - a week long design, make and test for Part 1 students

Other Activities

Consultancy (12)

  1. HiETA Ltd (2012 – present)
  2. Delta Motorsport Ltd (2012 – present)
  3. Mercedes Benz High Performance Powertrains (2011 – 2013)
  4. SVT Ltd (2011 – 2012)
  5. Equipmake Ltd (2011 – 2012)
  6. Ascending Power Ltd (City spin-in) (2011 – present)
    Director & Consultancy
  7. PepsiCo International (2009 – 2010)
  8. Dynamics Boosting Systems Ltd (Imperial College spin-out) (2007 – present)
    Director & Consultancy
  9. Red Bull Racing F1 (2006 – 2007)
  10. Hiflux Ltd (2003 – 2007)
  11. Turbo Genset Company Ltd /Turbo Power Systems Ltd (2000 – 2007)
  12. BP Amoco, Rolls-Royce, Honeywell Turbochargers, GKN, DERA, Edwards High Vacuum, Nortel Networks, XKF Developments & OPRA Gas Turbines (1992 – 2007)