CONTROL TECHNIQUES FOR WAVE ENERGY CONVERTERS

Absorbed power
Spectral power density (m 2 s)
m
Introduction
Large body
Small body
Wave energy absorption is widerbanded
for a large body than for a
“point-absorber”.
This is relevant for real polychromatic
multi-frequency waves.
Here smaller oscillating-bodies are less
efficient than larger ones.
This can be (partially) overcome by
control (phase control).
Wave frequency
1.5
1
0.5
0
0.5
1
100
200
150 200 250 3
t s
0.2
0.15
0.1
0.05
T e
H s
10 s
2m
0
0 0.5 1 1.5
Frequency (rad/s)