Predicting the temperature and flow distribution in a direct oil-cooled electrical machine with segmented stator
This paper presents a computationally efficient thermo-fluid model to predict the temperature and flow distribution in an oil-cooled electrical machine with a segmented stator. The Yokeless and Segmented Armature axial flux machine was used as a case study in which a numerical model was set up and v...
| Main Authors: | , , |
|---|---|
| Format: | Journal article |
| Published: |
IEEE
2015
|
| _version_ | 1797097604328194048 |
|---|---|
| author | Camilleri, R Howey, D McCulloch, M |
| author_facet | Camilleri, R Howey, D McCulloch, M |
| author_sort | Camilleri, R |
| collection | OXFORD |
| description | This paper presents a computationally efficient thermo-fluid model to predict the temperature and flow distribution in an oil-cooled electrical machine with a segmented stator. The Yokeless and Segmented Armature axial flux machine was used as a case study in which a numerical model was set up and validated to within 6% of experimental results. The model was adapted to predict the temperature distribution of the segmented stator of a machine, identifying the hotspot temperatures and their location. Changes to the flow geometry on the stator temperature distribution were investigated. It was shown how by carefully controlling the flow distribution in the stator, the temperature distribution is improved and the hot spot temperature is reduced by 13 K. This benefits the machine by doubling the insulation lifetime or by increasing the current density by approximately 7%. |
| first_indexed | 2024-03-07T04:57:52Z |
| format | Journal article |
| id | oxford-uuid:d7391431-3619-4603-9c27-8d81eb70b168 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T04:57:52Z |
| publishDate | 2015 |
| publisher | IEEE |
| record_format | dspace |
| spelling | oxford-uuid:d7391431-3619-4603-9c27-8d81eb70b1682022-03-27T08:39:35ZPredicting the temperature and flow distribution in a direct oil-cooled electrical machine with segmented statorJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:d7391431-3619-4603-9c27-8d81eb70b168Symplectic Elements at OxfordIEEE2015Camilleri, RHowey, DMcCulloch, MThis paper presents a computationally efficient thermo-fluid model to predict the temperature and flow distribution in an oil-cooled electrical machine with a segmented stator. The Yokeless and Segmented Armature axial flux machine was used as a case study in which a numerical model was set up and validated to within 6% of experimental results. The model was adapted to predict the temperature distribution of the segmented stator of a machine, identifying the hotspot temperatures and their location. Changes to the flow geometry on the stator temperature distribution were investigated. It was shown how by carefully controlling the flow distribution in the stator, the temperature distribution is improved and the hot spot temperature is reduced by 13 K. This benefits the machine by doubling the insulation lifetime or by increasing the current density by approximately 7%. |
| spellingShingle | Camilleri, R Howey, D McCulloch, M Predicting the temperature and flow distribution in a direct oil-cooled electrical machine with segmented stator |
| title | Predicting the temperature and flow distribution in a direct oil-cooled electrical machine with segmented stator |
| title_full | Predicting the temperature and flow distribution in a direct oil-cooled electrical machine with segmented stator |
| title_fullStr | Predicting the temperature and flow distribution in a direct oil-cooled electrical machine with segmented stator |
| title_full_unstemmed | Predicting the temperature and flow distribution in a direct oil-cooled electrical machine with segmented stator |
| title_short | Predicting the temperature and flow distribution in a direct oil-cooled electrical machine with segmented stator |
| title_sort | predicting the temperature and flow distribution in a direct oil cooled electrical machine with segmented stator |
| work_keys_str_mv | AT camillerir predictingthetemperatureandflowdistributioninadirectoilcooledelectricalmachinewithsegmentedstator AT howeyd predictingthetemperatureandflowdistributioninadirectoilcooledelectricalmachinewithsegmentedstator AT mccullochm predictingthetemperatureandflowdistributioninadirectoilcooledelectricalmachinewithsegmentedstator |