an investigation of dual stator winding induction machines

The clock diagram of the dual stator winding induction machine is given in Figure
3.2. The turn and winding functions of the ABC winding set are shown in Figure 3.3 (I)
and Figure 3.3 (II) respectively, where C s1
is the number of coils per slot for the ABC
winding set and C s1
= N s1
6 . N s1
is the number of turns per phase.
For phase A, the self-inductance is:
2π
1
LAA = µ 0rl
∫ ⋅ nA
A
g
0 0
( θ ) ⋅ N ( θ ) ⋅ dθ
98
(3.37)
Since the turn function of phase A is a piecewise linear equation, the integration can
only be done in each linear region and the results of each linear region are added to
obtain the final result.
Y
Y
− X
− X
− Z
− Z
B
− A
− A
− A
− A
−Y
X B
X B
B
B
−Y
B
Z
− C
Figure 3.2 The clock diagram of dual stator winding induction machine
Z
− C
− X
− C
− X
− C
− C
Y
− C
Y
A
− Z
A
− Z
Z
− A
− B
Z
Z
− A
C
− B
Z
− B
−Y
C
− B − X
−Y
C
X
C
X
C
− Z
C
− Z
−
B
Y
− B
Y
− X
A
A
A
A
X
X
−Y
− Y