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Power take-off system based on continuously variable transmission configuration for wave energy converter

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Abstract

This paper presents the conceptual design and an experimental investigation of a power-take-off (PTO) system in terms of a wave energy converter (WEC) that consists of a bi-to-unidirectional gearbox, flywheel, and an electro-hydraulic actuator (EHA) that is driven by a continuously variable transmission (CVT) system. First, a detailed conceptual design is proposed, and an accurate model of the system is derived to form the basis for the investigation of the systemic capability. Then, a control strategy is developed and experiments are conducted carefully to analyze the performance of the proposed system. Conversion efficiencies under different working conditions are also carried out for a comparison with the conventional configuration to evaluate the effectiveness of the new proposal. Consequently, the experiment results indicated that the performance of the generator was improved significantly, and the great potential of the new configuration means it can be applied in practical WEC applications.

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Abbreviations

WEC:

Wave energy converter

CVT:

Continuously variable transmission

EHA:

Electro-Hydraulic actuator

PTO:

Power take off

Rot:

Rotational

Pos:

Position

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Author information

Authors and Affiliations

  1. School of Mechanical Engineering, Graduate School, University of Ulsan, 93, Daehak-ro, Nam-gu, Ulsan, 44610, Republic of Korea

    Nguyen Minh Tri

  2. Department of Mechanical Engineering, HCMC University of Technology and Education, Ho Chi Minh City, 820000, Vietnam

    Phan Cong Binh

  3. School of Mechanical Engineering, University of Ulsan, 93, Daehak-ro, Nam-gu, Ulsan, 44610, Republic of Korea

    Kyoung Kwan Ahn

Authors
  1. Nguyen Minh Tri
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  2. Phan Cong Binh
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  3. Kyoung Kwan Ahn
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Correspondence to Kyoung Kwan Ahn.

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Tri, N.M., Binh, P.C. & Ahn, K.K. Power take-off system based on continuously variable transmission configuration for wave energy converter. Int. J. of Precis. Eng. and Manuf.-Green Tech. 5, 89–101 (2018). https://doi.org/10.1007/s40684-018-0010-0

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  • DOI: https://doi.org/10.1007/s40684-018-0010-0

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