The accuracy of defining the energy efficiency of drive systems exemplified by comparison with hydrostatic drives with proportional motor speed control

• Autorzy: Skorek Grzegorz

Identyfikatory

DOI

10.17402/334

• Języki publikacji: EN

Abstrakty

EN

The aim of the article is to look at the possibility of accurately determining the energy efficiency of drive systems. The results of experimentally determined efficiencies and the efficiencies determined from simulations of two hydrostatic systems with throttling control and fed by a constant capacity pump were compared. The research apparatus was very precisely designed, made and automated. The measuring instruments that were used are characterized by their high measuring accuracy. The issues related to the determination of the energy losses and the energy efficiency of the hydraulic motor or drive system, which should be determined as dependent on the physical quantities independent of these losses, were also discussed. A Paszota diagram of the power increase in the direction opposite to the direction of the power flow, replacing the Sankey diagram of the power decrease in the direction of the power flow in the hydraulic motor or in the drive system, was analyzed. The results showed that a Paszota diagram opens up a new perspective on research on the power of energy losses and energy efficiency of hydraulic motors and drive systems.

Słowa kluczowe

EN

energy efficiency; useful power; power of losses; accuracy; field of work; drive system; hydrostatic transmission

• Wydawca: Wydawnictwo Naukowe Akademii Morskiej w Szczecinie
• Czasopismo: Zeszyty Naukowe Akademii Morskiej w Szczecinie
• Rocznik: 2019
• Tom: nr 58 (130)
• Strony: 32--41
• Opis fizyczny: Bibliogr. 12 poz., rys.

Twórcy

autor

Skorek Grzegorz

• Gdynia Maritime University, Faculty of Marine Engineering, Department of Engineering Sciences 81–87 Morska St., 81-225 Gdynia, Poland

Bibliografia

• 1. Czyński, M. (2005) Laboratory tests of energy efficiency of hydrostatic transmission. Doctor’s Thesis. Szczecin: Szczecin University of Technology. Faculty of Marine Technology.
• 2. Kollek, W. & Stasiak, M. (2012) The impact of the control system for the positioning accuracy and response time of the electrohydraulic working system. Drive and Control 10, pp. 68–71.
• 3. Osiecki, A. (1998) Hydrostatic drive of machines. WNT. Warszawa.
• 4. Paszota, Z. (2016a) Energy losses in hydrostatic drive: Drive investigation method compatible with diagram of power increase opposite to the direction of power flow. Saarbrucken: Lap Lambert Academic Publishing.
• 5. Paszota, Z. (2016b) On power stream in motor or drive system. Polish Maritime Research 04, pp. 93–98.
• 6. Piątek, D. (2004) Study of energy behavior of cylinder as a result of throttling control structure. VII Conference: Shipbuilding and Ocean Engineering, Integrated Transport. University Publishing, Gdańsk, vol. 01, pp.184–192.
• 7. Pietrzak, M. & Okularczyk, W. (2012) The efficiency of hydraulic cylinder. Hydraulics and Pneumatics 2, pp. 21–24.
• 8. Quan, Z., Quan, L. & Zhang, J. (2014) Review of energy efficient direct pump controlled cylinder electro-hydraulic technology. Renewable and Sustainable Energy Reviews 35, pp. 336–346.
• 9. Siemieniako, F. (2013) Hydraulic system with cylinder. Laboratory tests. Hydraulics and Pneumatics 2, pp. 21–24.
• 10. Skorek, G. (2010) Energy characteristics of the hydraulic system with proportional control of cylinder, fed by a constant capacity pump in a constant pressure and variable pressure system (in Polish). Doctor dissertation. Gdańsk University of Technology, Faculty of Ocean Engineering and Ship Technology. Gdańsk.
• 11. Skorek, G. (2013) Energy efficiency of a hydrostatic drive with proportional control compared with volumetric control. Polish Maritime Research 03, pp.14–19.
• 12. Stefański, T. & Zawarczyński, Ł. (2012) Analysis of pressure control system in a hydrostatic drive. Hydraulics and Pneumatics 6, pp. 19–24.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).