METHOD TO MONITOR MECHANICAL LOADS OF AN ACTUATOR FOR THE ROTATIONAL POSITIONING OF A MOVABLE PART OF A WIND TURBINE

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(11)

EP 3 594 493 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	18.03.2020 Bulletin 2020/12

(43)	Date of publication:
	15.01.2020 Bulletin 2020/03

(21)	Application number: 19185664.0

(22)	Date of filing: 11.07.2019

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International Patent Classification (IPC):

F03D 17/00^(2016.01)

F03D 7/02^(2006.01)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA ME
	Designated Validation States:
	KH MA MD TN

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Priority:

12.07.2018 IT 201800007145

(71)	Applicant: Bonfiglioli Riduttori S.p.A.
	40012 Calderara di Reno (IT)

(72)	Inventors:
	COMINETTI, Paolo 40012 CALDERARA DI RENO (BO) (IT) LAMBRUSCHI, Roberto 40012 CALDERARA DI RENO (BO) (IT) TORCELLI, Andrea 35139 PADOVA (IT)

(74)	Representative: Maccagnan, Matteo et al
	Studio Torta S.p.A. Via Viotti, 9 10121 Torino 10121 Torino (IT)

(54)	METHOD TO MONITOR MECHANICAL LOADS OF AN ACTUATOR FOR THE ROTATIONAL POSITIONING OF A MOVABLE PART OF A WIND TURBINE

(57) A method to monitor mechanical loads of at least one positioning actuator (17, 20) for the rotational positioning of a movable part (3, 6) of a wind turbine (1), wherein at least two load parameters, indicating a torque exerted upon, and an angular speed of the positioning actuator (17, 30) due to external forces acting upon the movable part (3, 6), are detected by means of sensors (24a-b, 36a-b; 37a-b, 38b-a) coupled to the positioning actuator (17, 30), the detected load parameters are processed in order to obtain torque (TQ) and angular speed (SP), an event is generated every time the obtained torque (TQ) exceeds a torque threshold (TQM1) or the obtained angular speed (SP) exceeds an angular speed threshold (SPM1) and the events are stored and processed in order to estimate the residual life of said positioning actuator (17, 30).