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UM0324 Fiches technique(PDF) 40 Page - STMicroelectronics

No de pièce UM0324
Description  This user manual describes
PDF  105 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UM0324 Fiches technique(HTML) 40 Page - STMicroelectronics

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Library functions
UM0324
40/105
With the following definitions for:
and
literature demonstrates that the space vector sector is identified by the conditions shown in
Table 1.
The duration of the positive pulse widths for the PWM applied on Phase A, B and C are
respectively computed by the following relationships:
Sector I, IV:
Sector II, V:
Table 1.
Sector identification
Y<0
Y>=0
Z<0
Z>=0
Z<0
Z>=0
X<=0
X<0
X<=0
X>0
Sector
V
IV
III
VI
I
II
alfa
V
T
U
∗
∗
= 3
α
beta
V
T
U
∗
=
β
β
U
X
=
2
β
α
U
U
Y
+
=
2
α
β
U
U
Z
−
=
2
Z
X
T
t
A
−
+
=
Z
t
t
A
B
+
=
X
t
t
B
C
−
=
2
Z
Y
T
t
A
−
+
=
Z
t
t
A
B
+
=
Y
t
t
A
C
−
=



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