Combined Thermofluid and Electromagnetic Optimisation of Stator Vent Cooling
| Autor: | Peter H. Connor, Kevin Bersch, Carol Eastwick, R. Rolston, Gaurang Vakil, Michael Galea, Stefano Nuzzo |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Stator Baffle 02 engineering and technology Permanent magnet synchronous generator Computational fluid dynamics 01 natural sciences law.invention Fluid dynamics law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Alternators 010302 applied physics Rotor (electric) business.industry 020208 electrical & electronic engineering Cooling Electric machines Electromagnetic modelling Energy efficiency Generators Magnetic losses Thermal management Mechanics Finite element method Power rating business |
| Zdroj: | 2018 XIII International Conference on Electrical Machines (ICEM). |
| DOI: | 10.1109/icelmach.2018.8507231 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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