Valve shifting time in a digital fluid power system: Energy efficiency versus fatigue loading

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

Abstract

A discrete fluid power force system has been proposed as a possible technology for improvement of the energy production of wave energy converters. Discrete force changes may however increase the fatigue loading experienced in the wave energy converter. Various research projects have studied how force oscillations in discrete fluid power systems may be avoided however some system limits sets bounds for the effectiveness of the developed algorithms. In the current study the correlation between force shifting time and fatigue loading is investigated by simulating a discrete fluid power power take-off (PTO) system. The force applied by the PTO system is measured during 100 wave periods and transformed to an equivalent load force. This equivalent load force is compared for various valve shifting times and compared to the energy production. The study shows a request for a trade-off between energy production and the equivalent load.
Original languageEnglish
Title of host publicationProceedings of the 6th International Conference on Control, Mechatronics and Automation
Number of pages5
PublisherAssociation for Computing Machinery
Publication dateOct 2018
Pages128-132
ISBN (Electronic)978-1-4503-6563-5
DOIs
Publication statusPublished - Oct 2018
Event6th International Conference on Control, Mechatronics and Automation - Tokyo, Japan
Duration: 12 Oct 201814 Oct 2018

Conference

Conference6th International Conference on Control, Mechatronics and Automation
CountryJapan
CityTokyo
Period12/10/201814/10/2018

Keywords

  • Digital Fluid Power
  • Digital Hydraulics
  • On/off Valve
  • Fatigue Loading
  • Wave Energy Converter
  • PTO system

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    Hansen, A. H., Asmussen, M. F., & Andersen, T. O. (2018). Valve shifting time in a digital fluid power system: Energy efficiency versus fatigue loading. In Proceedings of the 6th International Conference on Control, Mechatronics and Automation (pp. 128-132). Association for Computing Machinery. https://doi.org/10.1145/3284516.3284529