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Latching and Declutching Control of the Solo Duck Wave-Energy Converter with Different Load Types
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- Wu, Jinming (author)
- Uppsala universitet,Elektricitetslära,Harbin Inst Technol, Sch Mechatron Engn, Harbin
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- Yao, Yingxue (author)
- Harbin Inst Technol, Shenzhen Grad Sch, Shenzhen
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- Zhou, Liang (author)
- Harbin Inst Technol, Sch Mechatron Engn, Harbin
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- (creator_code:org_t)
- 2017-12-06
- 2017
- English.
- In: Energies. - : MDPI AG. - 1996-1073. ; 10:12
- Journal article (peer-reviewed)
Abstract
Subject headings
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- The solo duck wave-energy converter (WEC) captures power in a point absorber manner, hence it exhibits high power-capture efficiency within only a narrow bandwidth. Passive control is characterized by a unidirectional power flow, and thus its engineering implementation can be simplified. In this paper, two typical passive control strategies, latching and declutching control, are applied to the solo duck WEC to improve its power-capture performance at wave periods larger and smaller than the natural period of the WEC, respectively. Special attention is paid to the peak value of instantaneous WEC performance parameters, including the peak motion excursion, the peak power take-off (PTO) moment, and the peak-to-average power ratio, when the captured power is maximized. Performance differences between the linear and coulomb loads are also investigated. Results show that both latching and declutching control can effectively improve captured power, but also incidentally increase the peak motion excursion and peak-to-average power ratio. When under latching and declutching control, the coulomb load leads to the same maximum relative capture width and peak motion excursion as the linear load, but presents smaller peak PTO moment and peak-to-average power ratio than the linear load, hence making the coulomb load the better choice for the solo duck WEC.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- passive control
- latching control
- declutching control
- solo duck
- load types
Publication and Content Type
- ref (subject category)
- art (subject category)
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