Table 4 Dimensions of the permanent magnets.

From: Structural effects of asymmetric magnet shape on performance of surface permanent magnet synchronous motors

Item

Unit

RTR-I

RTR-II

TTR-I

TTR-II

NTR-I

NTR-II

Radius, R

mm

19.75

20

10.9

11.7

10.9

11.65

Thickness, T

mm

2

2.5

2.6

3.2

2.6

3.2

Length, L

mm

7.4

9.8

3.7

4.9

7.4

9.8

Skew angle

°

3

3

3

3

3

3

Width, W

mm

–

–

10.1

9.8

10.1

9.8

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