{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T20:01:27Z","timestamp":1782417687865,"version":"3.54.5"},"reference-count":9,"publisher":"STEF92 Technology","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2024,11,1]]},"abstract":"<jats:p>In 2023, 18.3 GW of new wind energy conversion capacity was installed in Europe; most of them (79%) represent onshore capacities. Most of this energy production is achieved with horizontal axis wind turbines. For this type of turbine, the location of the transmission coupled with an electric generator or a hydraulic group, in the turbine platform, leads to a significant increase in the mass of the platform, and implicitly in the mass of the pillar that supports the turbine. In addition, turbine maintenance becomes more difficult as the rotor diameter and installation height increase. The platform (excluding the rotor) represents between 20 ... 35% of the total weight of a large turbine reaching hundreds of tonnes in some cases. In the case of the VESTAS V90 turbine, the platform weighs 75 tonnes, the rotor 40 tonnes, and the tower 152 tonnes. For this reason, methods of reducing the suspended mass, mainly by placing the electric generator on the ground, have been and are being intensively studied in the last decades. If at the beginning large power turbines were studied, recently medium and small sized turbines are also being considered. The paper presents a solution for hydrostatic transmission of energy from the turbine rotor to the generator, validated by numerical simulation with Simcenter Amesim.<\/jats:p>","DOI":"10.5593\/sgem2024\/4.1\/s17.14","type":"proceedings-article","created":{"date-parts":[[2024,12,4]],"date-time":"2024-12-04T12:26:52Z","timestamp":1733315212000},"page":"115-122","source":"Crossref","is-referenced-by-count":1,"title":["HYDROSTATIC POWER TRANSMISSION SYSTEM FOR WIND TURBINES"],"prefix":"10.5593","volume":"24","author":[{"given":"Catalin","family":"Dumitrescu","sequence":"first","affiliation":[{"name":"National Institute of Research & Development for Optoelectronics\/INOE 2000, Subsidiary Hydraulics and Pneumatics Research Institute\/IHP","place":["Romania"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexandru-Polifron","family":"Chirita","sequence":"additional","affiliation":[{"name":"National Institute of Research & Development for Optoelectronics\/INOE 2000, Subsidiary Hydraulics and Pneumatics Research Institute\/IHP","place":["Romania"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stefan-Mihai","family":"Sefu","sequence":"additional","affiliation":[{"name":"National Institute of Research & Development for Optoelectronics\/INOE 2000, Subsidiary Hydraulics and Pneumatics Research Institute\/IHP","place":["Romania"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adriana-Mariana","family":"Bors","sequence":"additional","affiliation":[{"name":"National Institute of Research & Development for Optoelectronics\/INOE 2000, Subsidiary Hydraulics and Pneumatics Research Institute\/IHP","place":["Romania"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ana-Maria Carla","family":"Popescu","sequence":"additional","affiliation":[{"name":"National Institute of Research & Development for Optoelectronics\/INOE 2000, Subsidiary Hydraulics and Pneumatics Research Institute\/IHP","place":["Romania"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"3602","reference":[{"key":"ref=1","unstructured":"[1] European Commission, Renewable energy targets, accessed on April 18, 2024, https:\/\/energy.ec.europa.eu\/topics\/renewable-energy\/renewable-energy-directive-targets-and-rules\/renewable-energy-targets_en."},{"key":"ref=2","unstructured":"[2] REN21 (Renewable Energy Policy Network for the 21st Century), Renewables 2023. 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DOI: 10.1016\/j.proeng.2015.06.002.","DOI":"10.1016\/j.proeng.2015.06.002"},{"key":"ref=8","unstructured":"[8]  Popescu  T.C.,  Dumitrescu  I.-C.,  Considerations  regarding  the  use  of  hydrostatic transmissions  in  wind  turbines,  25th  International  Conference  on  Hydraulics  and Pneumatics HERVEX, Baile Govora, Romania, November 13-15, pp 111-119, 2019."},{"key":"ref=9","unstructured":"[9] Pina Rodriguez I.G., Hydraulic drivetrains for wind turbines: Radial piston digital machines,  Graduation  project  for  M.Sc.  in  Sustainable  Energy  Technology,  Delft University of Technology, July 2012."}],"event":{"name":"24th SGEM International Multidisciplinary Scientific GeoConference 24","theme":"Earth and Planetary Sciences","location":"Albena, Bulgaria","acronym":"SGEM24","number":"24","sponsor":["SGEM WORLD SCIENCE (SWS) Scholarly Society, Austria"],"start":{"date-parts":[[2024,7,1]]},"end":{"date-parts":[[2024,7,7]]}},"container-title":["SGEM International Multidisciplinary Scientific GeoConference\ufffd EXPO Proceedings","24th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2024, Energy and Clean Technologies, Vol 24, Issue 4.1"],"original-title":[],"deposited":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T19:28:39Z","timestamp":1782415719000},"score":1,"resource":{"primary":{"URL":"https:\/\/epslibrary.at\/items\/7f2d1018-709c-4a01-b3c0-3424e708f10e\/hydrostatic-power-transmission-system-for-wind-turbines"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,11,1]]},"references-count":9,"URL":"https:\/\/doi.org\/10.5593\/sgem2024\/4.1\/s17.14","relation":{},"ISSN":["1314-2704"],"issn-type":[{"value":"1314-2704","type":"print"}],"subject":[],"published":{"date-parts":[[2024,11,1]]}}}