CONTROL TECHNIQUES FOR WAVE ENERGY CONVERTERS
CONTROL TECHNIQUES FOR WAVE ENERGY CONVERTERS
CONTROL TECHNIQUES FOR WAVE ENERGY CONVERTERS
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OWC Dynamics<br />
Stochastic model:<br />
• Linear turbine (Wells turbine)<br />
• Random Gaussian waves<br />
Pierson-Moskowitz spectrum<br />
S<br />
(<br />
)<br />
263H<br />
2<br />
s<br />
T<br />
e<br />
4<br />
5<br />
exp(<br />
1054T<br />
e<br />
4<br />
4<br />
).<br />
For linear system,<br />
2<br />
p<br />
2<br />
0<br />
S<br />
( ) (<br />
and pdf f ( p)<br />
p(<br />
t)<br />
)<br />
(<br />
1<br />
2<br />
is<br />
)<br />
randomGaussian,<br />
2<br />
p<br />
d<br />
exp<br />
where<br />
2<br />
p<br />
2<br />
2<br />
p<br />
Λ<br />
with variance<br />
KD<br />
N<br />
a<br />
B<br />
i<br />
a<br />
V<br />
c<br />
0<br />
2<br />
a<br />
C<br />
Q exc ( ) ( ) A w<br />
excitation<br />
coeff.<br />
1<br />
wave<br />
ampl.<br />
P<br />
t<br />
f<br />
3<br />
5<br />
2 N D p p<br />
( p)<br />
P ( p)<br />
dp<br />
a<br />
t<br />
exp fP<br />
dp<br />
2<br />
2 2<br />
2 N D<br />
p<br />
0<br />
2<br />
2<br />
p<br />
a