Mr Calum Cossar

  • Research Technologist (Systems Power and Energy)

telephone: 01413306003
email: Calum.Cossar@glasgow.ac.uk

Research interests

Biography

Graduated B.Sc.(Hons) Electronics & Electrical Engineering, University of Glasgow in 1983. Worked for Ferranti plc, Edinburgh 1983-1988 on high speed digital signal processing in Airborne Radar applications. Joined the SPEED Laboratory, University of Glasgow in 1988 as a Research Assistant and was appointed as a Departmental Research Technologist in 1991. Current research interests on digital control of brushless motors and generators (brushless PM, Interior Permanent Magnet AC, Switched Reluctance), and associated power electronic converters. Managed over 15 industrial contracts with SPEED Consortium companies, primarily involved with the development of application specific motor controllers. Currently a Director of the RenewNet project, which is a 3 year Scottish Government funded project in association with the Universities of Edinburgh and Strathclyde to promote Knowledge Transfer between Scottish Universities and SME's in the area of Renewable Power Technology. Also involved in lecturing courses on Microprocessors, Power Electronics, Power Engineering and Robotics in the department.


All publications

List by: Type | Date

Jump to: 2017 | 2015 | 2014 | 2010 | 2009 | 2008 | 2006 | 2005 | 2004 | 2003 | 1995 | 1994
Number of items: 39.

2017

Rezaei, N., Mehran, K. and Cossar, C. (2017) A Practical Model and an Optimal Controller for Variable Speed Wind Turbine Permanent Magnet Synchronous Generator. In: 9th International Conference on Modelling, Identification and Control (ICMIC 2017), Kunming, China, 10-12 July 2017, (Accepted for Publication)

2015

Garcia Caballero, V., Watson, I. and Cossar, C. (2015) Efficiency Analysis of different Energy Harvesters. In: XIII Symposium of Mexican Students and Studies, London, UK, 23-25 Jul 2015,

2014

Ngu, S. S., Dorrell, D. and Cossar, C. (2014) Design and operation of very slow speed generators for a Bristol cylinder sea wave generating device. IEEE Transactions on Industry Applications, 50(4), pp. 2749-2759. (doi:10.1109/TIA.2013.2294993)

Fang, J., Vuckovic, A., Galen, S., Cossar, C., Conway, B. A. and Hunt, K. J. (2014) Design and evaluation of a prototype gait orthosis for early rehabilitation of walking. Technology and Health Care, 22(2), pp. 273-288. (doi:10.3233/THC-140821)

Ohiero, P.O., Cossar, C. and Melone, J. (2014) A Fast Simulation Model for a Permanent Magnet Synchronous Generator (PMSG) Drive System. In: 2014 16th European Conference on Power Electronics and Applications (EPE'14-ECCE Europe), Lappeenranta, Finland, 26-28 Aug 2014, pp. 1-10. (doi:10.1109/EPE.2014.6910862)

2010

Morton, G. and Cossar, C. (2010) A Performance Comparison of Three PWM Switching Current Control Strategies. In: 36th Annual Conference of the IEEE Industrial Electronics Society, Arizona, USA, 7-10 November 2010, (doi:10.1109/IECON.2010.5675118)

Popescu, M., Ional, D.M., Boglietti, A., Cavagnino, A., Cossar, C. and McGilp, M.I. (2010) A general model for estimating the laminated steel losses under PWM voltage supply. IEEE Transactions on Industry Applications, 46(4), pp. 1389-1396. (doi:10.1109/TIA.2010.2049810)

2009

Boglietti, A., Cavagnino, A., Staton, D.A., Popescu, M., Cossar, C. and McGilp, M.I. (2009) End space heat transfer coefficient determination for different induction motor enclosure types. IEEE Transactions on Industry Applications, 45(3), pp. 929-937. (doi:10.1109/08IAS.2008.49)

2008

Miller, T.J.E., Popescu, M., Cossar, C., McGilp, M.I., Olaru, M., Davies, A., Sturgess, J. and Sitzia, A. (2008) Embedded finite-element solver for computation of brushless permanent-magnet motors. IEEE Transactions on Industry Applications, 44(4), pp. 1124-1133. (doi:10.1109/TIA.2008.926199)

Agidis, V.G., Balouktsis, A.I. and Cossar, C. (2008) On attaining the multiple solutions of selective harmonic elimination PWM three-level waveforms through function minimisation. IEEE Transactions on Industrial Electronics, 55(3), (doi:10.1109/TIE.2007.909728)

Cossar, C., Popescu, M., Miller, T.J.E., McGilp, M. and Olaru, M. (2008) A general magnetic-energy-based torque estimator: Validation via a permanent-magnet motor drive. IEEE Transactions on Industry Applications, 44(4), pp. 1210-1217. (doi:10.1109/TIA.2008.926231)

Dorrell, D. G. and Cossar, C. (2008) A vibration-based condition monitoring system for switched reluctance machine rotor eccentricity detection. IEEE Transactions on Magnetics, 44(9), pp. 2204-2214. (doi:10.1109/TMAG.2008.2000498)

Dorrell, D. G., Popescu, M., Cossar, C. and Ionel, D. (2008) Unbalanced Magnetic Pull in Fractional-Slot Brushless PM Motors. In: 2008 IEEE Industry Applications Society Annual Meeting, Vols 1-5. Series: IEEE Industry Applications Society Annual Meeting. IEEE: New York, pp. 2098-2105. ISBN 978-1-4244-2278-4

Popescu, M., Dorrell, D.G., Ionel, D. and Cossar, C. (2008) Single and Double Layer Windings in Fractional Slot-per-Pole PM Machines - Effects on Motor Performance. In: IECON 2008: 34th Annual Conference of the IEEE Industrial Electronics Society, Vols 1-5, Proceedings. Series: IEEE Industrial Electronics Society. IEEE: New York, pp. 1986-1991. ISBN 978-1-4244-1767-4

Popescu, M., Dorrell, D.G., Ionel, D. and Cossar, C. (2008) Single and double layer windings in fractional slot-per-pole PM machines - effects on motor performance. In: IECON 2008 Proceedings: 34th annual Conference of the IEEE Industrial Electronics Society (IECON 2008): Orlando, Florida, U.S.A., 10-13 November 2008. IEEE Computer Society: Piscataway, N.J., USA, pp. 2055-2060. ISBN 9781424417674 (doi:10.1109/IECON.2008.4758273)

2006

Agelidis, V., Balouktsis, A., Balouktsis, I. and Cossar, C. (2006) Multiple sets of solutions for harmonic elimination PWM bipolar waveforms: Analysis and experimental verification. IEEE Transactions on Power Electronics, 21, pp. 415-421. (doi:10.1109/TPEL.2005.869752)

Cossar, C., Popescu, M., Miller, T., McGilp, M. and Dorrell, D. (2006) A new on-line torque estimator for permanent magnet motor drives: validation through the i-psi diagram. In: IEEE-IAS, Florida, USA, ISBN 1-4244-0365-0/06

Miller, T., Popescu, M., Cossar, C., McGilp, M., Sitzia, A., Sturgess, J. and Davies, A. (2006) Embedded finite-element solver for computation of permanent-magnet brushless motors. In: IEEE-IAS, Florida, USA, ISBN 1-4244-0365-0/06

Walker, J.A., Dorrell, D.G. and Cossar, C. (2006) Effect of mutual coupling on torque production in switched reluctance motors. Journal of Applied Physics, 99(8), 08R304. (doi:10.1063/1.2162822)

2005

Dorrell, D.G., Chindurza, I. and Cossar, C. (2005) Effects of rotor eccentricity on torque in switched reluctance machines. IEEE Transactions on Magnetics, 41(10), pp. 3961-3963. (doi:10.1109/TMAG.2005.855178)

Chindurza, I., Dorrell, D. and Cossar, C. (2005) Assessing the core losses in switched reluctance machines. IEEE Transactions on Magnetics, 41, pp. 3907-3909. (doi:10.1109/TMAG.2005.854964)

Miller, T.J.E., Popescu, M., Cossar, C. and McGilp, M.I. (2005) Computation of the voltage-driven flux-MMF diagram for saturated PM brushless motors. In: Industry Applications Conference, Kowloon, Hong Kong, 2-6 October, pp. 1023-1028. ISBN 0780392086

Popescu, M., Miller, T., Cossar, C. and McGilp, M. (2005) Iron losses modelling and effects in Salient pole permanent magnet motors : a review285. In: IAESTE CENTRAL EUROPEAN MEETING - ICEM 2004, Cracow, Poland,

Popescu, M., Miller, T., Cossar, C., McGilp, M., Strappazzon, G., Trivillin, N. and Santarossa, R. (2005) Comparative study of starting methods for a single-phase permanent magnet synchronous motor. Epe Journal, 15, pp. 48-56.

Walker, J., Dorrell, D. and Cossar, C. (2005) Flux-linkage calculation in permanent-magnet motors using the frozen permeabilities method. IEEE Transactions on Magnetics, 41, pp. 3946-3948. (doi:10.1109/TMAG.2005.854973)

2004

Chindurza, I., Dorrell, D. and Cossar, C. (2004) Vibration Analysis of a Switched Reluctance Machine with Eccentric Rotor. In: IEE Conference on Power Electronics, Machines and Drives, Edinburgh,

Cossar, C. and Sawata, T. (2004) Microprocessor Controlled DC Power Supply for the Generator Control Unit of a Future Aircraft Engine Generator with a Wide Operating Speed Range. In: IEE Conference on Power Electronics, Machines and Drives, Edinburgh,

Miller, T., Popescu, M., Cossar, C., McGilp, M., Strappazzon, G., Trivillin, N. and Santarossa, R. (2004) Line-start permanent-magnet motor single-phase steady-state performance analysis. IEEE Transactions on Industry Applications, 40, pp. 516-525. (doi:10.1109/TIA.2004.824492)

Miller, T., Walker, J. and Cossar, C. (2004) Measurement and Application of Flux-Linkage and Inductance in a Permanent-Magnet Synchronous Machine. In: IEE Conference on Power Electronics, Machines and Drives, Edinburgh,

Walker, J., Miller, T. and Cossar, C. (2004) Simulation and Analysis of Magnetisation Characteristics of Interior Permanent Magnet Motors. In: Proceedings of the 4th International Advanced Engineering Design Conference, Glasgow,

2003

Chindurza, I., Dorrell, D. and Cossar, C. (2003) Non-invasive fault diagnosis for switched-reluctance machines with Incorrect winding turns, Inter-turn winding faults and eccentric rotors. In: IEEE- PEDS'03 - Institute of Electronic and Electrical Engineers 5th International Conference on Power Electronics and Drive Systems, Singapore,

Miller, T.J.E., Popescu, M., Cossar, C., McGilp, M.I. and Walker, J.A. (2003) Calculating the interior permanent-magnet motor. In: Electric Machines and Drives Conference., Madison, W.I., 1-4 June 2003., pp. 1181-1187.

Miller, T., Popescu, M., Cossar, C., McGilp, M., Strappazzon, G., Trivillin, N. and Santarossa, R. (2003) Line start permanent magnet motor: Single-phase steady-state performance analysis. In: IEEE- IAS, Salt Lake City, Utah, USA, pp. 1962-1969.

Miller, T., Popescu, M., McGilp, M., Cossar, C. and Walker, J. (2003) Calculating the interior permament magnet machine. In: IEEE-IEMC Institute of Electronic and Electrical Engineers- International Engineering Management Conference 2003, Madison WI, USA,

Popescu, M., Miller, T., Cossar, C., McGilp, M., Strappazzon, G., Trivillin, N. and Santarossa, R. (2003) Comparative study of starting methods for a single phase permament magnet synchronous motor. In: European Conference on Power Electronics and Electrical Drives, Toulouse, France, ISBN 90-75815-077

Sawata, T., Paskell, L., Holme, M., Rust, S., Batchelor, S. and Cossar, C. (2003) Design considerations of the LP-shaft generator. In: Electrical drive systems for the more electric aircraft, London, UK,

Sawata, T., Paskell, L., Holme, M., Rust, S., Batchelor, S. and Cossar, C. (2003) Design considerations on switched reluctance low pressure shaft generator for the more electric aircraft. In: SAE Switched reluctance TOPTEC2003 : Society of Automotive Engineers, Dayton, USA,

1995

Kjaer, P.C., Cossar, C., Gribble, J.J., Miller, T.J.E. and Li, Y. (1995) Minimization of reactive power flow in switched reluctance generators. In: IPEC'95: International Power Electronics Conference, Yokohama, Japan, 3-7 Apr 1995, pp. 1022-1026.

1994

Kjaer, P., Cossar, C., Gribble, J., Li, Y. and Miller, T. (1994) Switched reluctance generator control using an inverse machine model. In: 1994 International Conference on Electrical Machines, pp. 380-385.

This list was generated on Wed Nov 22 07:32:07 2017 GMT.
Number of items: 39.

Articles

Ngu, S. S., Dorrell, D. and Cossar, C. (2014) Design and operation of very slow speed generators for a Bristol cylinder sea wave generating device. IEEE Transactions on Industry Applications, 50(4), pp. 2749-2759. (doi:10.1109/TIA.2013.2294993)

Fang, J., Vuckovic, A., Galen, S., Cossar, C., Conway, B. A. and Hunt, K. J. (2014) Design and evaluation of a prototype gait orthosis for early rehabilitation of walking. Technology and Health Care, 22(2), pp. 273-288. (doi:10.3233/THC-140821)

Popescu, M., Ional, D.M., Boglietti, A., Cavagnino, A., Cossar, C. and McGilp, M.I. (2010) A general model for estimating the laminated steel losses under PWM voltage supply. IEEE Transactions on Industry Applications, 46(4), pp. 1389-1396. (doi:10.1109/TIA.2010.2049810)

Boglietti, A., Cavagnino, A., Staton, D.A., Popescu, M., Cossar, C. and McGilp, M.I. (2009) End space heat transfer coefficient determination for different induction motor enclosure types. IEEE Transactions on Industry Applications, 45(3), pp. 929-937. (doi:10.1109/08IAS.2008.49)

Miller, T.J.E., Popescu, M., Cossar, C., McGilp, M.I., Olaru, M., Davies, A., Sturgess, J. and Sitzia, A. (2008) Embedded finite-element solver for computation of brushless permanent-magnet motors. IEEE Transactions on Industry Applications, 44(4), pp. 1124-1133. (doi:10.1109/TIA.2008.926199)

Agidis, V.G., Balouktsis, A.I. and Cossar, C. (2008) On attaining the multiple solutions of selective harmonic elimination PWM three-level waveforms through function minimisation. IEEE Transactions on Industrial Electronics, 55(3), (doi:10.1109/TIE.2007.909728)

Cossar, C., Popescu, M., Miller, T.J.E., McGilp, M. and Olaru, M. (2008) A general magnetic-energy-based torque estimator: Validation via a permanent-magnet motor drive. IEEE Transactions on Industry Applications, 44(4), pp. 1210-1217. (doi:10.1109/TIA.2008.926231)

Dorrell, D. G. and Cossar, C. (2008) A vibration-based condition monitoring system for switched reluctance machine rotor eccentricity detection. IEEE Transactions on Magnetics, 44(9), pp. 2204-2214. (doi:10.1109/TMAG.2008.2000498)

Agelidis, V., Balouktsis, A., Balouktsis, I. and Cossar, C. (2006) Multiple sets of solutions for harmonic elimination PWM bipolar waveforms: Analysis and experimental verification. IEEE Transactions on Power Electronics, 21, pp. 415-421. (doi:10.1109/TPEL.2005.869752)

Walker, J.A., Dorrell, D.G. and Cossar, C. (2006) Effect of mutual coupling on torque production in switched reluctance motors. Journal of Applied Physics, 99(8), 08R304. (doi:10.1063/1.2162822)

Dorrell, D.G., Chindurza, I. and Cossar, C. (2005) Effects of rotor eccentricity on torque in switched reluctance machines. IEEE Transactions on Magnetics, 41(10), pp. 3961-3963. (doi:10.1109/TMAG.2005.855178)

Chindurza, I., Dorrell, D. and Cossar, C. (2005) Assessing the core losses in switched reluctance machines. IEEE Transactions on Magnetics, 41, pp. 3907-3909. (doi:10.1109/TMAG.2005.854964)

Popescu, M., Miller, T., Cossar, C., McGilp, M., Strappazzon, G., Trivillin, N. and Santarossa, R. (2005) Comparative study of starting methods for a single-phase permanent magnet synchronous motor. Epe Journal, 15, pp. 48-56.

Walker, J., Dorrell, D. and Cossar, C. (2005) Flux-linkage calculation in permanent-magnet motors using the frozen permeabilities method. IEEE Transactions on Magnetics, 41, pp. 3946-3948. (doi:10.1109/TMAG.2005.854973)

Miller, T., Popescu, M., Cossar, C., McGilp, M., Strappazzon, G., Trivillin, N. and Santarossa, R. (2004) Line-start permanent-magnet motor single-phase steady-state performance analysis. IEEE Transactions on Industry Applications, 40, pp. 516-525. (doi:10.1109/TIA.2004.824492)

Book Sections

Dorrell, D. G., Popescu, M., Cossar, C. and Ionel, D. (2008) Unbalanced Magnetic Pull in Fractional-Slot Brushless PM Motors. In: 2008 IEEE Industry Applications Society Annual Meeting, Vols 1-5. Series: IEEE Industry Applications Society Annual Meeting. IEEE: New York, pp. 2098-2105. ISBN 978-1-4244-2278-4

Popescu, M., Dorrell, D.G., Ionel, D. and Cossar, C. (2008) Single and Double Layer Windings in Fractional Slot-per-Pole PM Machines - Effects on Motor Performance. In: IECON 2008: 34th Annual Conference of the IEEE Industrial Electronics Society, Vols 1-5, Proceedings. Series: IEEE Industrial Electronics Society. IEEE: New York, pp. 1986-1991. ISBN 978-1-4244-1767-4

Popescu, M., Dorrell, D.G., Ionel, D. and Cossar, C. (2008) Single and double layer windings in fractional slot-per-pole PM machines - effects on motor performance. In: IECON 2008 Proceedings: 34th annual Conference of the IEEE Industrial Electronics Society (IECON 2008): Orlando, Florida, U.S.A., 10-13 November 2008. IEEE Computer Society: Piscataway, N.J., USA, pp. 2055-2060. ISBN 9781424417674 (doi:10.1109/IECON.2008.4758273)

Conference Proceedings

Rezaei, N., Mehran, K. and Cossar, C. (2017) A Practical Model and an Optimal Controller for Variable Speed Wind Turbine Permanent Magnet Synchronous Generator. In: 9th International Conference on Modelling, Identification and Control (ICMIC 2017), Kunming, China, 10-12 July 2017, (Accepted for Publication)

Garcia Caballero, V., Watson, I. and Cossar, C. (2015) Efficiency Analysis of different Energy Harvesters. In: XIII Symposium of Mexican Students and Studies, London, UK, 23-25 Jul 2015,

Ohiero, P.O., Cossar, C. and Melone, J. (2014) A Fast Simulation Model for a Permanent Magnet Synchronous Generator (PMSG) Drive System. In: 2014 16th European Conference on Power Electronics and Applications (EPE'14-ECCE Europe), Lappeenranta, Finland, 26-28 Aug 2014, pp. 1-10. (doi:10.1109/EPE.2014.6910862)

Morton, G. and Cossar, C. (2010) A Performance Comparison of Three PWM Switching Current Control Strategies. In: 36th Annual Conference of the IEEE Industrial Electronics Society, Arizona, USA, 7-10 November 2010, (doi:10.1109/IECON.2010.5675118)

Cossar, C., Popescu, M., Miller, T., McGilp, M. and Dorrell, D. (2006) A new on-line torque estimator for permanent magnet motor drives: validation through the i-psi diagram. In: IEEE-IAS, Florida, USA, ISBN 1-4244-0365-0/06

Miller, T., Popescu, M., Cossar, C., McGilp, M., Sitzia, A., Sturgess, J. and Davies, A. (2006) Embedded finite-element solver for computation of permanent-magnet brushless motors. In: IEEE-IAS, Florida, USA, ISBN 1-4244-0365-0/06

Miller, T.J.E., Popescu, M., Cossar, C. and McGilp, M.I. (2005) Computation of the voltage-driven flux-MMF diagram for saturated PM brushless motors. In: Industry Applications Conference, Kowloon, Hong Kong, 2-6 October, pp. 1023-1028. ISBN 0780392086

Popescu, M., Miller, T., Cossar, C. and McGilp, M. (2005) Iron losses modelling and effects in Salient pole permanent magnet motors : a review285. In: IAESTE CENTRAL EUROPEAN MEETING - ICEM 2004, Cracow, Poland,

Chindurza, I., Dorrell, D. and Cossar, C. (2004) Vibration Analysis of a Switched Reluctance Machine with Eccentric Rotor. In: IEE Conference on Power Electronics, Machines and Drives, Edinburgh,

Cossar, C. and Sawata, T. (2004) Microprocessor Controlled DC Power Supply for the Generator Control Unit of a Future Aircraft Engine Generator with a Wide Operating Speed Range. In: IEE Conference on Power Electronics, Machines and Drives, Edinburgh,

Miller, T., Walker, J. and Cossar, C. (2004) Measurement and Application of Flux-Linkage and Inductance in a Permanent-Magnet Synchronous Machine. In: IEE Conference on Power Electronics, Machines and Drives, Edinburgh,

Walker, J., Miller, T. and Cossar, C. (2004) Simulation and Analysis of Magnetisation Characteristics of Interior Permanent Magnet Motors. In: Proceedings of the 4th International Advanced Engineering Design Conference, Glasgow,

Chindurza, I., Dorrell, D. and Cossar, C. (2003) Non-invasive fault diagnosis for switched-reluctance machines with Incorrect winding turns, Inter-turn winding faults and eccentric rotors. In: IEEE- PEDS'03 - Institute of Electronic and Electrical Engineers 5th International Conference on Power Electronics and Drive Systems, Singapore,

Miller, T.J.E., Popescu, M., Cossar, C., McGilp, M.I. and Walker, J.A. (2003) Calculating the interior permanent-magnet motor. In: Electric Machines and Drives Conference., Madison, W.I., 1-4 June 2003., pp. 1181-1187.

Miller, T., Popescu, M., Cossar, C., McGilp, M., Strappazzon, G., Trivillin, N. and Santarossa, R. (2003) Line start permanent magnet motor: Single-phase steady-state performance analysis. In: IEEE- IAS, Salt Lake City, Utah, USA, pp. 1962-1969.

Miller, T., Popescu, M., McGilp, M., Cossar, C. and Walker, J. (2003) Calculating the interior permament magnet machine. In: IEEE-IEMC Institute of Electronic and Electrical Engineers- International Engineering Management Conference 2003, Madison WI, USA,

Popescu, M., Miller, T., Cossar, C., McGilp, M., Strappazzon, G., Trivillin, N. and Santarossa, R. (2003) Comparative study of starting methods for a single phase permament magnet synchronous motor. In: European Conference on Power Electronics and Electrical Drives, Toulouse, France, ISBN 90-75815-077

Sawata, T., Paskell, L., Holme, M., Rust, S., Batchelor, S. and Cossar, C. (2003) Design considerations of the LP-shaft generator. In: Electrical drive systems for the more electric aircraft, London, UK,

Sawata, T., Paskell, L., Holme, M., Rust, S., Batchelor, S. and Cossar, C. (2003) Design considerations on switched reluctance low pressure shaft generator for the more electric aircraft. In: SAE Switched reluctance TOPTEC2003 : Society of Automotive Engineers, Dayton, USA,

Kjaer, P.C., Cossar, C., Gribble, J.J., Miller, T.J.E. and Li, Y. (1995) Minimization of reactive power flow in switched reluctance generators. In: IPEC'95: International Power Electronics Conference, Yokohama, Japan, 3-7 Apr 1995, pp. 1022-1026.

Kjaer, P., Cossar, C., Gribble, J., Li, Y. and Miller, T. (1994) Switched reluctance generator control using an inverse machine model. In: 1994 International Conference on Electrical Machines, pp. 380-385.

This list was generated on Wed Nov 22 07:32:07 2017 GMT.