Design, Analysis, and Evaluation of the UC-Berkeley Wave-Energy Extractor

Ronald W. Yeung; Antoine Peiffer; Nathan Tom; Tomasz Matlak

doi:10.1115/1.4004518

Design, Analysis, and Evaluation of the UC-Berkeley Wave-Energy Extractor

Ronald W. Yeung, Antoine Peiffer, Nathan Tom, Tomasz Matlak

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39 Scopus citations

Abstract

This paper evaluates the technical feasibility and performance characteristics of an ocean-wave energy to electrical energy conversion device that is based on a moving linear generator. The UC-Berkeley design consists of a cylindrical floater, acting as a rotor, which drives a stator consisting of two banks of wound coils. The performance of such a device in waves depends on the hydrodynamics of the floater, the motion of which is strongly coupled to the electromagnetic properties of the generator. Mathematical models are developed to reveal the critical hurdles that can affect the efficiency of the design. A working physical unit is also constructed. The linear generator is first tested in a dry environment to quantify its performance. The complete physical floater and generator system is then tested in a wave tank with a computer-controlled wavemaker. Measurements are compared with theoretical predictions to allow an assessment of the viability of the design and the future directions for improvements. © 2012 American Society of Mechanical Engineers.

Original language	English (US)
Journal	Journal of Offshore Mechanics and Arctic Engineering
Volume	134
Issue number	2
DOIs	https://doi.org/10.1115/1.4004518
State	Published - 2012
Externally published	Yes

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title = "Design, Analysis, and Evaluation of the UC-Berkeley Wave-Energy Extractor",

abstract = "This paper evaluates the technical feasibility and performance characteristics of an ocean-wave energy to electrical energy conversion device that is based on a moving linear generator. The UC-Berkeley design consists of a cylindrical floater, acting as a rotor, which drives a stator consisting of two banks of wound coils. The performance of such a device in waves depends on the hydrodynamics of the floater, the motion of which is strongly coupled to the electromagnetic properties of the generator. Mathematical models are developed to reveal the critical hurdles that can affect the efficiency of the design. A working physical unit is also constructed. The linear generator is first tested in a dry environment to quantify its performance. The complete physical floater and generator system is then tested in a wave tank with a computer-controlled wavemaker. Measurements are compared with theoretical predictions to allow an assessment of the viability of the design and the future directions for improvements. {\textcopyright} 2012 American Society of Mechanical Engineers.",

author = "Yeung, {Ronald W.} and Antoine Peiffer and Nathan Tom and Tomasz Matlak",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The research reported has been supported in part by the KAUST (King Abdullah University of Science and Technology) and Berkeley AEA Award under Grant No. KAUST-25478 during 2008-2010. We are grateful to D. Roddier of Marine Innovation & Technology, T. Raybon of the USCG, and at Berkeley, to H. Kang, J. Khorsandi, K.-F. Kwok, and C. Cochet for their invaluable assistance, and to many useful discussions with Professor Dennis K. Lieu. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

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doi = "10.1115/1.4004518",

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publisher = "American Society of Mechanical Engineers(ASME)",

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T1 - Design, Analysis, and Evaluation of the UC-Berkeley Wave-Energy Extractor

AU - Yeung, Ronald W.

AU - Peiffer, Antoine

AU - Tom, Nathan

AU - Matlak, Tomasz

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The research reported has been supported in part by the KAUST (King Abdullah University of Science and Technology) and Berkeley AEA Award under Grant No. KAUST-25478 during 2008-2010. We are grateful to D. Roddier of Marine Innovation & Technology, T. Raybon of the USCG, and at Berkeley, to H. Kang, J. Khorsandi, K.-F. Kwok, and C. Cochet for their invaluable assistance, and to many useful discussions with Professor Dennis K. Lieu. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2012

Y1 - 2012

N2 - This paper evaluates the technical feasibility and performance characteristics of an ocean-wave energy to electrical energy conversion device that is based on a moving linear generator. The UC-Berkeley design consists of a cylindrical floater, acting as a rotor, which drives a stator consisting of two banks of wound coils. The performance of such a device in waves depends on the hydrodynamics of the floater, the motion of which is strongly coupled to the electromagnetic properties of the generator. Mathematical models are developed to reveal the critical hurdles that can affect the efficiency of the design. A working physical unit is also constructed. The linear generator is first tested in a dry environment to quantify its performance. The complete physical floater and generator system is then tested in a wave tank with a computer-controlled wavemaker. Measurements are compared with theoretical predictions to allow an assessment of the viability of the design and the future directions for improvements. © 2012 American Society of Mechanical Engineers.

AB - This paper evaluates the technical feasibility and performance characteristics of an ocean-wave energy to electrical energy conversion device that is based on a moving linear generator. The UC-Berkeley design consists of a cylindrical floater, acting as a rotor, which drives a stator consisting of two banks of wound coils. The performance of such a device in waves depends on the hydrodynamics of the floater, the motion of which is strongly coupled to the electromagnetic properties of the generator. Mathematical models are developed to reveal the critical hurdles that can affect the efficiency of the design. A working physical unit is also constructed. The linear generator is first tested in a dry environment to quantify its performance. The complete physical floater and generator system is then tested in a wave tank with a computer-controlled wavemaker. Measurements are compared with theoretical predictions to allow an assessment of the viability of the design and the future directions for improvements. © 2012 American Society of Mechanical Engineers.

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VL - 134

JO - Journal of Offshore Mechanics and Arctic Engineering

JF - Journal of Offshore Mechanics and Arctic Engineering

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ER -

Design, Analysis, and Evaluation of the UC-Berkeley Wave-Energy Extractor

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