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- W930023003 abstract "In this paper, we investigate the differences betweentwo control strategies for a two-device linear array of wave energyconverters (WEC) for device spacings of 4 to 80 times the devicediameter. The WECs operate in heave only and are controlled inreal time. The control strategies, called the independent deviceand global array control, estimate the excitation forces andcalculate the optimum vertical velocity trajectory and reactivepower take off force to achieve the velocity for a given seastate. The independent device controller assumes that each deviceis in isolation and only computes the excitation forces basedon the incident wave, whereas the global array controller doestake the radiation and diffraction effects from the other devicesinto account. Whatever controller is used in the simulations, allhydrodynamic coupling effects are accounted for.For a cylindrically shaped single-body device with diameter of5 m and a draught of 25 m we simulate the device motions for5 regular wave cases and one irregular sea state representing aBretschneider spectrum.These first test sets illustrate the different control needsdepending on the separating distance of the array members. Aglobal control algorithm is advantageous for small separatingdistances, where radiation is larger." @default.
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- W930023003 date "2011-08-01" @default.
- W930023003 modified "2023-09-23" @default.
- W930023003 title "Control Strategies for Arrays of Wave EnergyDevices" @default.
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