Multi-stable mechanism of an oscillating-body wave energy converter
Li, Liang and Zhang, Xiantao and Yuan, Zhiming and Gao, Yan (2020) Multi-stable mechanism of an oscillating-body wave energy converter. IEEE Transactions on Sustainable Energy, 11 (1). pp. 500-508. ISSN 1949-3037 (https://doi.org/10.1109/TSTE.2019.2896991)
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Abstract
The present research aims to utilize the multi-stable mechanism to increase the energy conversion of the oscillating-body wave energy converter (WEC). Considering that a majority of WEC concepts are linear and single-stable, a nonlinear spring-damper model is proposed to achieve the multi-stable mechanism. The system is either monostable or bistable depending on the initial condition of the springs. The energy conversion of a heaving point-absorber with the nonlinear spring-damper model is investigated in the present research. Firstly, a state-space dynamic model of the heaving point-absorber is developed. Then the energy conversion at both the monostable mode and the bistable mode is simulated. The present research also illustrates the response feature at the two stable modes. It is found the nonlinear point-absorber behaves like a linear system in the monostable mode. The energy conversion is just increased slightly. Nevertheless, the energy absorption is increased substantially in the bistable mode. It is found that the velocity phase is adjusted in the bistable mode, leading to the enhancement of the energy conversion.
ORCID iDs
Li, Liang ORCID: https://orcid.org/0000-0002-8528-3171, Zhang, Xiantao, Yuan, Zhiming ORCID: https://orcid.org/0000-0001-9908-1813 and Gao, Yan;-
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Item type: Article ID code: 68742 Dates: DateEvent30 January 2020Published1 February 2019Published Online30 January 2019AcceptedNotes: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works Subjects: Technology > Electrical engineering. Electronics Nuclear engineering Department: Faculty of Engineering > Naval Architecture, Ocean & Marine Engineering Depositing user: Pure Administrator Date deposited: 04 Jul 2019 13:57 Last modified: 09 Nov 2024 01:42 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/68742