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Thermo-Hydraulic Modelling and Experimental Validation of an Electro-Hydraulic Compact Drive

Author

Listed:
  • Søren Ketelsen

    (Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark)

  • Sebastian Michel

    (Institute of Fluid Power (IFD), Technische Universität Dresden, 01069 Dresden, Germany)

  • Torben O. Andersen

    (Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark)

  • Morten Kjeld Ebbesen

    (Department of Engineering Sciences, University of Agder, 4879 Grimstad, Norway)

  • Jürgen Weber

    (Institute of Fluid Power (IFD), Technische Universität Dresden, 01069 Dresden, Germany)

  • Lasse Schmidt

    (Department of Energy Technology, Aalborg University, 9220 Aalborg, Denmark)

Abstract

Electro-hydraulic compact drives (ECDs) are an emerging technology for linear actuation in a wide range of applications. Especially within the low power range of 5–10 kW, the plug-and-play capability, good energy efficiency and small space requirements of ECDs render this technology a promising alternative to replace conventional valve-controlled linear drive solutions. In this power range, ECDs generally rely on passive cooling to keep oil and system temperatures within the tolerated range. When expanding the application range to larger power classes, passive cooling may not be sufficient. Research investigating the thermal behaviour of ECDs is limited but indeed required for a successful expansion of the application range. In order to obtain valuable insights into the thermal behaviour of ECDs, thermo-hydraulic simulation is an important tool. This may enable system design engineers to simulate thermal behaviour and thus develop proper thermal designs during the early design phase, especially if such models contain few parameters that can be determined with limited information available. Our paper presents a lumped thermo-hydraulic model derived from the conservation of mass and energy. The derived model was experimentally validated based on experimental data from an ECD prototype. Results show good accuracy between measured and simulated temperatures. Even a simple thermal model containing only a few thermal resistances may be sufficient to predict steady-state and transient temperatures with reasonable accuracy. The presented model may be used for further investigations into the thermal behaviour of ECDs and thus toward proper thermal designs required to expand the application range.

Suggested Citation

  • Søren Ketelsen & Sebastian Michel & Torben O. Andersen & Morten Kjeld Ebbesen & Jürgen Weber & Lasse Schmidt, 2021. "Thermo-Hydraulic Modelling and Experimental Validation of an Electro-Hydraulic Compact Drive," Energies, MDPI, vol. 14(9), pages 1-29, April.
  • Handle: RePEc:gam:jeners:v:14:y:2021:i:9:p:2375-:d:541372
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    References listed on IDEAS

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    1. Damiano Padovani & Søren Ketelsen & Daniel Hagen & Lasse Schmidt, 2019. "A Self-Contained Electro-Hydraulic Cylinder with Passive Load-Holding Capability," Energies, MDPI, vol. 12(2), pages 1-21, January.
    2. Jesper Liniger & Nariman Sepehri & Mohsen Soltani & Henrik C. Pedersen, 2017. "Signal-Based Gas Leakage Detection for Fluid Power Accumulators in Wind Turbines," Energies, MDPI, vol. 10(3), pages 1-18, March.
    3. Rituraj Rituraj & Andrea Vacca & Mario Antonio Morselli, 2020. "Thermal Modelling of External Gear Machines and Experimental Validation," Energies, MDPI, vol. 13(11), pages 1-24, June.
    4. Qu, Shaoyang & Fassbender, David & Vacca, Andrea & Busquets, Enrique, 2021. "A high-efficient solution for electro-hydraulic actuators with energy regeneration capability," Energy, Elsevier, vol. 216(C).
    5. Lasse Schmidt & Søren Ketelsen & Morten Helms Brask & Kasper Aastrup Mortensen, 2019. "A Class of Energy Efficient Self-Contained Electro-Hydraulic Drives with Self-Locking Capability," Energies, MDPI, vol. 12(10), pages 1-26, May.
    6. A. Pfeffer & T. Glück & W. Kemmetmüller & A. Kugi, 2016. "Mathematical modelling of a hydraulic accumulator for hydraulic hybrid drives," Mathematical and Computer Modelling of Dynamical Systems, Taylor & Francis Journals, vol. 22(5), pages 397-411, September.
    7. Søren Ketelsen & Damiano Padovani & Torben O. Andersen & Morten Kjeld Ebbesen & Lasse Schmidt, 2019. "Classification and Review of Pump-Controlled Differential Cylinder Drives," Energies, MDPI, vol. 12(7), pages 1-27, April.
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    Cited by:

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