Abstract
Stator cores of large electrical machines most commonly use half-overlap lamination joints. These can cause magnetic saturation in the region of the joints, such that by flux levels of 1.2 T the toroidal reluctance for a typical core can increase by 200% over that expected. Magnetic anisotropy can conversely reduce expected toroidal reluctance, though by only 18-30%. While long predicted, their impact on magnetic circuit design and especially high flux stator core testing remains apparently unrecognized in industry. The saturation phenomenon is studied and its net effect on the toroidal B/H response of a stator core predicted with FE models and validated by test.
| Original language | English |
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| Title of host publication | PEMD 2014, The 7th IET international conference on Power Electronics, Machines and Drives |
| Place of Publication | London |
| Publisher | Institution of Engineering and Technology |
| Pages | 0053/1-0053/6 |
| Number of pages | 6 |
| DOIs | |
| Publication status | Published - Apr 2014 |
| Event | PEMD 2014 - Power Electronics, Machines and Drives Conference - Manchester, UK Duration: 8 Apr 2014 → 10 Apr 2014 |
Conference
| Conference | PEMD 2014 - Power Electronics, Machines and Drives Conference |
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| City | Manchester, UK |
| Period | 8/04/14 → 10/04/14 |
Keywords
- finite element analysis
- laminations
- machine testing
- magneticanisotropy
- magnetic circuits
- magnetic cores
- magnetic flux
- reluctancemachines
- stators
- FE model
- electrical machines
- half-overlap laminationjoints
- high flux stator core testing
- magnetic anisotropy
- magneticcircuit design
- magnetic saturation
- stator cores
- toroidal B-Hresponse
- toroidal reluctance
- condition monitoring
- interlaminarinsulation
- lamination joint
- stator