Environmental Engineering Reference
In-Depth Information
Fig. 2.10
Simulink model
T
em
Wind turbine
T
em
v
n
MPPT
v
2
v
1
V
r
I
r
Speed
I
s
V
s
SOSM Controller
Control system
DFIG
V
s
Grid
aerodynamic wind turbine motion equations available in FAST (Fig.
2.10
). This
introduces tremendous flexibility in wind turbine controls implementation during
simulation.
2.4.1 Test Conditions
Numerical validations, using FAST with Matlab-Simulink
have been carried-out
on the NREL WP 1.5-MW wind turbine. The wind turbine and the DFIG ratings
are given in the Appendix.
2.4.2 HOSM Control Performances
Validation tests were performed using turbulent FAST wind data with 7 and 14 m/sec
minimum and maximum wind speeds, respectively (Fig.
2.11
). As clearly shown
in Figs.
2.12
and
2.13
, very good tracking performances are achieved in terms of
DFIG rotor current and WT torque with respect to wind fluctuations. The HOMS
control strategy does not induce increased mechanical stress as there are no strong
torque variations. Indeed and as expected, the aerodynamic torque remains smooth
(Fig.
2.13
).
