Page 233 - Renewable Energy Devices and System with Simulations in MATLAB and ANSYS

220 Renewable Energy Devices and Systems with Simulations in MATLAB and ANSYS ®
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L m To GSC
Rotor current sω 1 ψ d
controller L s
i* qr + + – V * qr V *
βr
– – S
* * e j(θ 1 –θ m ) * V
i dr + + V dr V αr M Rotor-
– + side
converter
sω L
1 sc
i dr
i qr
– i αβr abc i abcr
e –j(θ –θ )
m
1
Q αβ
– + s
P d
+ s ω m
dt θ m
P* s Q* s DFIG
θ 1
Power PLL
controller ω 1
u dq u αβ u
ψ dq Power and flux –jθ abc abc
P Q calculation i dq e 1 i αβ αβ i abc
s s
Grid

FIGURE 9.8 P s and Q s FOC of the rotor-side converter of DFIG.

To RSC V
Grid current DC
controller
i* q + + V* q V β *
– – S
V
i * + + V d * e jθ 1 V * M
α
d
– + Grid-side
converter
L
ω 1
– V DC
– Q g i d i q L
+ +
Q* g V * dc
DC-link and
power
controller
i dq i αβ i abc
Power abc
P Q calculation u dq e –jθ 1 u αβ αβ u abc
s s

θ 1 PLL Grid

FIGURE 9.9 DC-link V DC and Q g FOC of the grid-side converter of DFIG.