New method for lubricating wind turbine pitch gears using embedded micro-nozzles

Farré-Lladós, JosepMechanical Engineering Department, UPC - Technical University of Catalonia, Terrassa (author)

Validerad; 2017; Nivå 2; 2017-02-20 (andbra)
The increase of power generated by wind turbines has increased the stresses applied in all of its components, thereby causing premature failures. Particularly, pitch and yaw gears suffer from excessive wear mainly caused by inappropriate lubrication. This paper presents a novel method to automatically lubricate the wind turbine pitch gear during operation. A micro-nozzle to inject fresh grease continuously between the teeth in contact was designed, manufactured, and installed in a test bench of a 2 MW wind turbine pitch system. The test bench was used to characterize the fatigue behavior of the gear surface using conventional wind turbine greases under real cyclic loads. Measurements of wear evolution in a pitch gear with and without micro-nozzle show a decrease of 70 % of the wear coefficient after 2×104 cycles.

Westerberg, Lars-GöranLuleå tekniska universitet,Strömningslära och experimentell mekanik(Swepub:ltu)lgwe (author)
Casals-Terré, JasminaMechanical Engineering Department, UPC - Technical University of Catalonia, Terrassa (author)
Mechanical Engineering Department, UPC - Technical University of Catalonia, TerrassaStrömningslära och experimentell mekanik (creator_code:org_t)

In:Journal of Mechanical Science and Technology: Springer31:2, s. 797-8061738-494X1976-3824

By the author/editor: Farré-Lladós, Jo ...; Westerberg, Lars ...; Casals-Terré, Ja ...

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Fluid Mechanics ...

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