Environmental Engineering Reference
In-Depth Information
sin(
ω
t-2
π
/3)
sin
-
2
π
/3
sin(
ω
t+2
π
/3)
sin
sin(
ω
t)
ω
t
sin
v
STA
RMS
V
(a) Synchronisation unit
Q
1
V
DCref
Hysteresis
Controller
×
PI
Q
2
-
-
-
sin(
ω
t)
i
a
i
s
H(s)
V
DC
(b) Controller for the rectifier leg
i
b
i
L
-
Q
3
Q
4
Hysteresis
Controller
i
s
-
i
c
(c) Controller for the neutral leg
sin(
ω
t-2
π
/3)
Q
5
Q
6
v
rb
u
b
V
×
PI
PWM
-
-
K
R
(s)
K
i
-
RMS
v
b
i
b
(d) Controller for Phase Leg
b
sin(ωt+2π/3)
Q
7
Q
8
u
c
v
rc
V
×
PI
PWM
-
-
K
i
K
R
(s)
-
RMS
v
c
i
c
(e) Controller for Phase Leg
c
Figure 14.6
Control strategy for the single-phase to three-phase converter
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