FOSWEC v2: System identification and control testing at Hinsdale Wave Research Laboratory

Description

This report summarizes the design and execution of a wave tank test of the floating oscillating surge wave energy converter (FOSWEC) in the O.H. Hinsdale Wave Research Laboratory Directional Wave Basin at Oregon State University. This device, which uses two "flaps" that pivot about a central platform when excited by waves, has a natural frequency within the range of the waves by which it is excited. The FOSWEC was originally considered to be a 1:33 scale device, however, for the current tests, no fixed relative scale is used (i.e., the WEC is considered to be scaled for the basin?s wave environment in which it operates). The primary goal of this test was to assess the degree to which previously developed modeling, experimentation, and control design methods could be applied to a broad range of wave energy converter designs. Testing was conducted to identify a dynamic model for the impedance and excitation behavior of the device. Using these models, a series of closed loop tests were conducted using a causal impedance matching controller. This report provides a brief description of the results, as well as a summary of the device and experimental design. The results show that the methods applied to this experimental device perform well and should be broadly applicable. The data collected during testing is compressed into FOSWEC.zip. Please refer to Appendix C (pages 61-63) of the test report for descriptions of each test ID corresponding to the compressed files.

Resources

Name Format Description Link
57 Compressed test data. Each file is named FOSWEC_*.mat where * corresponds to the test ID that can be found in Appendix C (pages 61-63) of the attached Dynamics and Controls Test Report https://mhkdr.openei.org/files/350/FOSWEC.zip
33 Test report issued by Sandia National Laboratories for a model scale FOSWEC. See Appendix C (Test Log, pages 61-63) of the report for the test IDs correlating to the .mat files compressed in FOSWEC.zip https://mhkdr.openei.org/files/350/SAND2020_11695.pdf

Tags

  • osu
  • oscillating
  • flap
  • impedance-matching
  • wave-tank
  • hydrokinetic
  • directional-wave-basin
  • surge-converter
  • mhk
  • wec
  • marine
  • foswec
  • closed-loop-control
  • tank-test
  • power
  • system-identification
  • o-h-hinsdale-wave-research-laboratory
  • control
  • advanced-wec-dynamics-and-controls
  • causal-impedance
  • causal
  • hinsdale-wave-research-laboratory
  • oregon-state-university
  • floating
  • energy

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