Comparison of Direct-Drive Power Takeoff Systems for Ocean Wave Energy Applications

Author

Rhinefrank, Ken ; Schacher, Al ; Prudell, Joe ; Brekken, Ted K. A. ; Stillinger, Chad ; Yen, John Z. ; Ernst, Steven G. ; von Jouanne, Annette ; Amon, Ean ; Paasch, Robert ; Brown, Andrew ; Yokochi, Alex

Author_Institution

Columbia Power Technol., Inc., Corvallis, OR, USA

Volume

37

Issue

1

fYear

2012

Firstpage

35

Lastpage

44

Abstract

This paper presents a comprehensive power takeoff (PTO) analysis program conducted as a collaborative research effort between Columbia Power Technologies, Inc., Oregon State University (OSU), and the U.S. Navy. Eighteen different direct-drive technologies were evaluated analytically and down-selected to five promising designs. Each of the five prototypes was simulated, modeled in SolidWorks, and built at the 200-W peak level and tested on OSU´s wave energy linear test bed. The simulations were validated with the 200-W experimental results and then scaled up to 100 kW, with full 100-kW designs including costs, maintenance, operations, etc., to estimate the cost of energy (COE) for each PTO buoy system at utility scale.

Keywords

drives; hydroelectric generators; wave power generation; OSU wave energy linear test bed; collaborative research; cost of energy; direct drive technology; maintenance operations; ocean wave energy; power 100 kW; power 200 W; power takeoff analysis program; Coils; Educational institutions; Force; Generators; Hardware; Performance evaluation; Torque; Generators; oceanic engineering and marine technology; permanent magnet machines;

fLanguage

English

Journal_Title

Oceanic Engineering, IEEE Journal of

Publisher

ieee

ISSN

0364-9059

Type

jour

DOI

10.1109/JOE.2011.2173832

Filename

6104185