Adaptive damping power take-off control for a three-body wave energy converter

Author

Zhe Zhang ; Brekken, Ted K.A. ; Rhinefrank, Ken ; Schacher, Al ; Prudell, Joe ; Hammagren, Erik ; Lenee-Bluhm, Pukha

Author_Institution

Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA

fYear

2013

fDate

15-19 Sept. 2013

Firstpage

321

Lastpage

328

Abstract

The performance of the power take-off (PTO) system for a wave energy converter (WEC) depends largely on its control algorithm. This paper presents an adaptive damping control algorithm which improves power capture across a range of sea states. The comparison between this control algorithm and other active control approaches such as linear damping is presented. Short term wave elevation forecasting methods and wave period determination methods are also discussed as pre-requirements for this method. This research is conducted for a novel WEC, developed by Columbia Power Technologies (COLUMBIA POWER). All hydrodynamic models are validated with their 1:7 and 1:33 scale tests.

Keywords

adaptive control; damping; electrohydrodynamics; linear systems; load forecasting; power control; power generation control; wave power generation; COLUMBIA POWER; Columbia Power Technologies; PTO; WEC; active control approach; adaptive damping power take-off control; hydrodynamic model; linear damping; short term wave elevation forecasting method; three-body wave energy converter; wave period determination method; Computational modeling; Damping; Force; Forecasting; Generators; Numerical models; Sea state;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2013 IEEE

Conference_Location

Denver, CO

Type

conf

DOI

10.1109/ECCE.2013.6646718

Filename

6646718