CONTROL TECHNIQUES FOR WAVE ENERGY CONVERTERS
CONTROL TECHNIQUES FOR WAVE ENERGY CONVERTERS
CONTROL TECHNIQUES FOR WAVE ENERGY CONVERTERS
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Avoid overdamping and underdamping. Recall that<br />
accumulator size is finite.<br />
How to control the damping level (PTO force or accumulator<br />
pressure) to the current sea state (or wave group) <br />
Answer: Control the oil flow rate q through hydraulic motor<br />
as function of pressure difference Δp<br />
Algorithm:<br />
q<br />
p<br />
constant<br />
Buoy<br />
LP gas HP gas<br />
accumulator accumulator<br />
Δp<br />
q<br />
q G S<br />
c 2<br />
Δp<br />
control<br />
piston<br />
area<br />
parameter<br />
Cylinder<br />
A<br />
B<br />
Valve