Oregon State University

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PhD Oral Preliminary Examination – Terry Lettenmaier


Thursday, December 6, 2012 2:00 PM - 4:00 PM

Ocean Testing of Wave Energy Converters using the Ocean Sentinel Instrumentation Buoy
Ocean testing of Wave Energy Converter (WEC) prototypes is necessary to facilitate commercial WEC development. The Ocean Sentinel Instrumentation Buoy, completed in August 2012, provides a stand-alone load for WEC prototypes during ocean testing. The first part of this work has been to develop the power conversion equipment on board the Ocean Sentinel that provides a controllable electrical load for WECs under test. The functionality of this equipment was demonstrated during August-October 2012 ocean testing of the WET-NZ WEC.

The second part of this work is to develop ocean test methods that can quickly characterize WEC performance using the Ocean Sentinel data acquisition and control system. WEC power output is usually dependent on load control, which will be provided by the Ocean Sentinel. After characterizing the effect of different control settings on WEC power output, a simple method to automatically track optimum control settings as sea conditions change is desired in order to assess WEC power performance. Maximum Power Point Tracking (MPPT) control will be investigated for this purpose. The goal of this research is to facilitate the use of characterization results to determine if MPPT control is viable or not for a particular test, and if it is, to also determine the MPPT algorithm and parameter settings that will be most effective.

Major Advisor: Annette von Jouanne
Committee: Ted Brekken
Committee: Ean Amon
Committee: Raviv Raich
GCR: Joseph Zaworski


Kelley Engineering Center (campus map)
1007
Nicole Thompson
1 541 737 3617
Nicole.Thompson at oregonstate.edu
Sch Elect Engr/Comp Sci
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