Abstract
Permanent-magnet machines with fractional slot concentrated windings are easy to manufacture. Their popularity therefore is steadily increasing. Without a proper design, however, the induced eddy-current losses in the solid rotor get rather high. The modeling and the prediction of eddy-current losses for these machines are thus very important during the design process. This paper focuses on the finite-element analysis and the experimental validation of eddy-current losses for this kind of machine with a small axial length. Two-dimensional and three-dimensional transient finite-element models are developed for computing the eddy-current losses. The rotor motion is taken into account using an Arbitrary Lagrangian-Eulerian formulation. The total iron losses are measured experimentally and a method to separate the rotor iron losses from the total iron losses is presented. The validation results show that the twodimensional finite-element model overestimates the losses due to the end-effects being neglected. The three-dimensional model agrees much better with the measurements in both no-load and on-load operations.
Original language | English |
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Title of host publication | 19th International Conference on Electrical Machines and Systems, ICEMS 2016 |
Place of Publication | Piscataway, NJ |
Publisher | IEEE |
Pages | 1-6 |
Number of pages | 6 |
ISBN (Electronic) | 978-4-88686-098-9 |
ISBN (Print) | 978-1-4673-8863-4 |
Publication status | Published - Nov 2016 |
Event | ICEMS 2016: 19th International Conference on Electric Machines and Systems - APA Hotel & Resort Tokyo Bay Makuhari, Chiba, Japan Duration: 13 Nov 2016 → 16 Nov 2016 Conference number: 19 |
Conference
Conference | ICEMS 2016 |
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Country/Territory | Japan |
City | Chiba |
Period | 13/11/16 → 16/11/16 |
Keywords
- Concentrated winding
- eddy current losses
- experimental validation
- permanent magnet machine