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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