
2-16 Power Electronics and Motor Drives
Summarizing the considerations taken into account so far, the following conclusions can be drawn:
• If a point-to-point description of the ux density waveform is requested, (2.23) is unacceptable
and it has to be at least substituted by the following relation:*
B
A
l
b
t
t
( )
( )
( )α µ
α
α= ⋅
0
(2.27)
where b(α) is the airgap ux density weakening function due to the slot opening stated in (2.24) and
shown in Figure 2.13. e eect of the slots on the actual ux density waveform is shown in Figure 2.15.
• On the other hand, if just the amplitude of the fundamental components of the mmf and ux den-
sity waveforms ...