Abstract
Based on the 2-d model of a slot and the effective flux density distribution in an equivalent slotless machine, this paper presents an analytical technique for accurately determining the optimal slot opening for minimum cogging torque in permanent magnet machines. It is then used to derive the relationship between slot opening and cogging torque for machines having different combinations of slot number and pole number. In addition, it is applied to slot pairing to effectively reduce the cogging torque. Analytical results are verified by finite element analyses and experiments.
| Original language | English |
|---|---|
| Pages (from-to) | 315-319 |
| Number of pages | 5 |
| Journal | Przeglad Elektrotechniczny |
| Volume | 87 |
| Issue number | 3 |
| Publication status | Published - 2011 |
| Externally published | Yes |
Keywords
- Cogging torque
- Permanent magnet machines
- Slot opening
- Slot pairing
ASJC Scopus subject areas
- Electrical and Electronic Engineering