Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling

K. Bersch; S. Nuzzo; P. H. Connor; C. N. Eastwick; M. Galea; R. Rolston; G. Vakil

doi:10.1109/ICELMACH.2018.8507231

Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling

K. Bersch
, S. Nuzzo
, P. H. Connor
, C. N. Eastwick
, M. Galea
, R. Rolston
, G. Vakil

Department of Mechanical, Materials and Manufacturing Engineering

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

11 Citations (Scopus)

Abstract

A combined electromagnetic and thermal modelling approach has been developed to optimise the design of multiple radial stator vents in an air-cooled, synchronous generator with a power rating of several hundred kVA. An experimentally validated 3-D Conjugate Heat Transfer Computational Fluid Dynamics model has been created and coupled with 2-D Electromagnetic Finite Element Analysis. Correlations between the combined vent width and rotor copper, rotor iron and stator iron losses were derived from the electromagnetic analysis. These correlations were implemented into the optimisation procedure of the parametric thermofluid model. Five parameters: vent locations, widths and the height of a baffle, were optimised simultaneously with the aim of minimising the peak stator winding temperature. The peak stator winding temperature was reduced by 11.1 %. The average stator winding temperature decreased by 6.3 %. To maintain the machine's power output, the removal of active stator material was compensated by increasing the rotor current.

Original language	English
Title of host publication	Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1116-1122
Number of pages	7
ISBN (Electronic)	9781538624777
DOIs	https://doi.org/10.1109/ICELMACH.2018.8507231
Publication status	Published - 24 Oct 2018
Event	23rd International Conference on Electrical Machines, ICEM 2018 - Alexandroupoli, Greece Duration: 3 Sept 2018 → 6 Sept 2018

Publication series

Name	Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018

Conference

Conference	23rd International Conference on Electrical Machines, ICEM 2018
Country/Territory	Greece
City	Alexandroupoli
Period	3/09/18 → 6/09/18

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Free Keywords

Alternators
Cooling
Electric machines
Electromagnetic modelling
Energy efficiency
Fluid dynamics
Generators
Magnetic losses
Thermal management

ASJC Scopus subject areas

Energy Engineering and Power Technology
Electrical and Electronic Engineering
Mechanical Engineering

Access to Document

10.1109/ICELMACH.2018.8507231

Cite this

Bersch, K., Nuzzo, S., Connor, P. H., Eastwick, C. N., Galea, M., Rolston, R., & Vakil, G. (2018). Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling. In Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018 (pp. 1116-1122). Article 8507231 (Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICELMACH.2018.8507231

Bersch, K. ; Nuzzo, S. ; Connor, P. H. et al. / Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling. Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 1116-1122 (Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018).

@inproceedings{028522f0720841c7ac6c72fa372461b5,

title = "Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling",

abstract = "A combined electromagnetic and thermal modelling approach has been developed to optimise the design of multiple radial stator vents in an air-cooled, synchronous generator with a power rating of several hundred kVA. An experimentally validated 3-D Conjugate Heat Transfer Computational Fluid Dynamics model has been created and coupled with 2-D Electromagnetic Finite Element Analysis. Correlations between the combined vent width and rotor copper, rotor iron and stator iron losses were derived from the electromagnetic analysis. These correlations were implemented into the optimisation procedure of the parametric thermofluid model. Five parameters: vent locations, widths and the height of a baffle, were optimised simultaneously with the aim of minimising the peak stator winding temperature. The peak stator winding temperature was reduced by 11.1 \%. The average stator winding temperature decreased by 6.3 \%. To maintain the machine's power output, the removal of active stator material was compensated by increasing the rotor current.",

keywords = "Alternators, Cooling, Electric machines, Electromagnetic modelling, Energy efficiency, Fluid dynamics, Generators, Magnetic losses, Thermal management",

author = "K. Bersch and S. Nuzzo and Connor, \{P. H.\} and Eastwick, \{C. N.\} and M. Galea and R. Rolston and G. Vakil",

note = "Publisher Copyright: {\textcopyright} 2018 IEEE.; 23rd International Conference on Electrical Machines, ICEM 2018 ; Conference date: 03-09-2018 Through 06-09-2018",

year = "2018",

month = oct,

day = "24",

doi = "10.1109/ICELMACH.2018.8507231",

language = "English",

series = "Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018",

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}

Bersch, K, Nuzzo, S, Connor, PH, Eastwick, CN, Galea, M, Rolston, R & Vakil, G 2018, Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling. in Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018., 8507231, Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018, Institute of Electrical and Electronics Engineers Inc., pp. 1116-1122, 23rd International Conference on Electrical Machines, ICEM 2018, Alexandroupoli, Greece, 3/09/18. https://doi.org/10.1109/ICELMACH.2018.8507231

Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling. / Bersch, K.; Nuzzo, S.; Connor, P. H. et al.
Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 1116-1122 8507231 (Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018).

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling

AU - Bersch, K.

AU - Nuzzo, S.

AU - Connor, P. H.

AU - Eastwick, C. N.

AU - Galea, M.

AU - Rolston, R.

AU - Vakil, G.

PY - 2018/10/24

Y1 - 2018/10/24

N2 - A combined electromagnetic and thermal modelling approach has been developed to optimise the design of multiple radial stator vents in an air-cooled, synchronous generator with a power rating of several hundred kVA. An experimentally validated 3-D Conjugate Heat Transfer Computational Fluid Dynamics model has been created and coupled with 2-D Electromagnetic Finite Element Analysis. Correlations between the combined vent width and rotor copper, rotor iron and stator iron losses were derived from the electromagnetic analysis. These correlations were implemented into the optimisation procedure of the parametric thermofluid model. Five parameters: vent locations, widths and the height of a baffle, were optimised simultaneously with the aim of minimising the peak stator winding temperature. The peak stator winding temperature was reduced by 11.1 %. The average stator winding temperature decreased by 6.3 %. To maintain the machine's power output, the removal of active stator material was compensated by increasing the rotor current.

AB - A combined electromagnetic and thermal modelling approach has been developed to optimise the design of multiple radial stator vents in an air-cooled, synchronous generator with a power rating of several hundred kVA. An experimentally validated 3-D Conjugate Heat Transfer Computational Fluid Dynamics model has been created and coupled with 2-D Electromagnetic Finite Element Analysis. Correlations between the combined vent width and rotor copper, rotor iron and stator iron losses were derived from the electromagnetic analysis. These correlations were implemented into the optimisation procedure of the parametric thermofluid model. Five parameters: vent locations, widths and the height of a baffle, were optimised simultaneously with the aim of minimising the peak stator winding temperature. The peak stator winding temperature was reduced by 11.1 %. The average stator winding temperature decreased by 6.3 %. To maintain the machine's power output, the removal of active stator material was compensated by increasing the rotor current.

KW - Alternators

KW - Cooling

KW - Electric machines

KW - Electromagnetic modelling

KW - Energy efficiency

KW - Fluid dynamics

KW - Generators

KW - Magnetic losses

KW - Thermal management

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M3 - Conference contribution

AN - SCOPUS:85057180823

T3 - Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018

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EP - 1122

BT - Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 23rd International Conference on Electrical Machines, ICEM 2018

Y2 - 3 September 2018 through 6 September 2018

ER -

Bersch K, Nuzzo S, Connor PH, Eastwick CN, Galea M, Rolston R et al. Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling. In Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018. Institute of Electrical and Electronics Engineers Inc. 2018. p. 1116-1122. 8507231. (Proceedings - 2018 23rd International Conference on Electrical Machines, ICEM 2018). doi: 10.1109/ICELMACH.2018.8507231

Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling

Abstract

Publication series

Conference

UN SDGs

Free Keywords

ASJC Scopus subject areas

Access to Document

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