Table 3 Fourier analysis of back-EMF.

From: Analytical modeling of coreless stator axial flux permanent magnet machines under no-load condition

\(\:{\theta\:}_{sk}\:\left(Mech.\:deg.\right)\)

Fundamental component of EA

THD of EA

\(\:{0}^{^\circ\:}\:\)

6.4 (V)

16.5%

\(\:{10}^{^\circ\:}\)

6.5 (V)

15.91%

\(\:{20}^{^\circ\:}\)

6.448 (V)

15%

\(\:{30}^{^\circ\:}\)

6.36 (V)

13.68%

\(\:{40}^{^\circ\:}\)

6.23 (V)

12%

\(\:{50}^{^\circ\:}\)

6.08 (V)

10.11%