MUMBAI, India, Sept. 12 -- Intellectual Property India has published a patent application (202517079447 A) filed by Siemens Gamesa Renewable Energy A/S, Brande, Denmark, on Aug. 21, for 'method for lowering and/or lifting and method for servicing a rotor blade of a wind turbine.'
Inventor(s) include Gade Soerensen, Thomas Justmi; and Hansen, Carsten Keller.
The application for the patent was published on Sept. 12, under issue no. 37/2025.
According to the abstract released by the Intellectual Property India: "Method for lowering and/or lifting a rotor blade (3) of a wind turbine (1) to change the distance (6) between an end face (7) of a blade root (8) of the rotor blade (3) and a contact surface (64) of a blade bearing (8) of the rotor blade (3), comprising the steps of providing multiple actuators (27-34), in particular at least four actuators (27-34), each actuator (27-34) having a first portion (48) and a second portion (49), wherein the second portion (49) is moveable in a respective actuator movement direction (50, 55) with respect to the first portion (48) by controlling the actuator (27-34), wherein the respective first portion (48) is coupled to the blade bearing (9) and the respective second portion (49) is coupled to the rotor blade (3) in such a way that all actuator movement directions (50, 55) deviate by less than 20 or less than 10 or less than 5 from the vertical direction (14, 15) when the rotor blade is in the given orientation (42), controlling the actuators (27-34) to lower and/or rise the rotor blade (3) while the rotor blade (3) is in the given orientation (42) in such a way that a first group (35) of the actuators (27-34) each exert a vertical upward force on a first circumferential section (40) of the blade root (8), and that a second group (36) of the actuators (27-34) exerts a vertical downward force on a second circumferential section (41 ) of the blade root (8)."
The patent application was internationally filed on Feb. 22, 2024, under International application No.PCT/EP2024/054565.
Disclaimer: Curated by HT Syndication.
