
DC–AC Converters 14-21
Since the maximal value can only occur at ωt = π/3 when the third harmonic is crossing zero, this
value can be considered into (14.26), which yields
v v
a a3
1
* *
.= (14.27)
Replacing
(
14.27)
i
n
(
14.20)
a
nd
b
y
c
onsidering
t
hat
a
t
ωt = π/
3
t
he
v
alue
o
f
has to be equal to the
carrier maximum value, i.e.,
, the following solution is obtained:
v v v
a a a
ˆ
*
* sin *
sin
π π
π
3 3
1
6
3
3
1
0
=
+
=
(14.28)
⇒ = =v
a
* . .
2
3
1 1547 (14.29)
Replacing (14.29) in (14.27) yields to
v
a3
0 19245* . .= (14.30)
Summarizing, the maximum value the fundamental component of the reference can have is ...