摘要:
Ein System für eine Windenergieanlage (100) weist auf: - zwei binäre Näherungssensoren (102, 103), die jeweils ausgebildet sind, ein Sensorsignal mit einer ersten oder einer zweiten Information bereit zu stellen, - einen Geber (104), - eine Steuervorrichtung (105), wobei - die Näherungssensoren (102, 103) und der Geber (104) berührungslos zusammenwirken, - die Näherungssensoren (102, 103) jeweils ausgebildet sind, in Abhängigkeit von einem Abstand (107) des Gebers (104) zum jeweiligen Näherungssensor (102, 103) das Sensorsignal mit der ersten Information oder der zweiten Informationen bereit zu stellen, - die Steuervorrichtung (105) eingerichtet ist, in Abhängigkeit von den Sensorsignalen der Näherungssensoren (102, 103) zu ermitteln, ob sich der Geber (104) innerhalb eines mittels der Näherungssensoren (102, 103) festgelegten Korrektursektors (108) befindet. Zudem werden ein Verfahren zur Montage des Systems sowie ein Verfahren zum Betreiben einer Windenergieanlage beschreiben.
摘要:
The mechanical brake comprises a double disc (D1 and D2) rotating with the transmission shaft and some brake calipers (P1 and P2) that apply friction on the disc when activated electrically, hydraulically or pneumatically. The brake is characterized because its high-speed shaft (Ea) is equipped with a drive train, adapting its diameter to some dimensions marked by the existing space and anchoring the brake calipers directly to the cover of the gearbox (M). The mechanical brake thus constituted is capable of braking with the pitch actuator in power position, in initial conditions of nominal power and at nominal average wind speed for an installation below 1 MW.
摘要:
The present invention relates in particular, but not limited to, a wind turbine hydraulic brake calliper. The brake calliper comprising a cylinder bore, a piston having a piston head and a piston skirt. The piston being received in the cylinder bore in an orientation where the piston head faces towards the brake pad. The calliper comprising a fluid connection connected to or connectable to a source of hydraulic fluid for leading hydraulic fluid into the void of the cylinder bore below the piston head (1b), so as to move the piston. The piston is formed at least partly and preferably solely from a polymeric material or from polymeric materials.
摘要:
An apparatus for controlling a wind power generator unit includes a deviation detection unit (100) to detect an angular deviation between windward and a current rotation direction of a nacelle (2) after a wind power generator is installed so as to face the windward, and a control unit (200) to receive data detected by the deviation detection unit (100) and to control a brake state and a yawing state of a yaw brake unit (50), wherein when the nacelle (2) rotates out of a preset deviation range, the control unit (100) temporarily releases frictional force of a brake pad (20) coming into close contact with a disk (10) so as to control a brake operation state of the yaw brake unit (50).
摘要:
A wind turbine of the horizontal axis, direct-drive type, comprises a hub provided with one or more blades, a generator with a centerline that is technically horizontal, the generator comprising an inner rotor which is driven by the hub and an outer stator, the stator comprising a front plate, a back plate and stacked, arcuate laminates. The front plate and the back plate are connected by tension rods so as to form a stator unit with the stacked, arcuate laminates being sandwiched between the back plate and the front-plate under compression, the arcuate laminates having protrusions over the circumference of the stator for dissipating heat to the atmosphere. The invention also relates to a direct-drive generator.
摘要:
A servicing system (30 or 300) for servicing a brake device (24) of a brake system comprising the brake device (24) and a brake disc (22) is described. The servicing system (30 or 300) includes a frame (32 or 302), and the servicing system (30 or 300) further comprises: mounting means (34 or 318) for mounting the frame (32 or 302) in a fixed position relative to the brake disc (22), supporting means (48 or 338) which are adapted to allow the brake device (24) to be moved on the frame (32 or 302) relative to the brake disc (22) and lifting means (46 or 304, 306) which are adapted to allow the brake device (24) to be raised or lowered relative to the brake disc (22).
摘要:
A method for stopping a pitch controlled wind turbine comprising a rotor with at least one blade (11), a mechanical brake (31) on the high speed shaft, a pitch system ((21, 23, 25) for adjusting the blade pitch angle, that includes: a) a first stage using the pitch system (21, 23, 25) for slowing down the rotor; b) a second stage using both the pitch system (21, 23, 25) and the mechanical brake (31) for stopping the rotor. The second stage begins when one of the following conditions takes place: the high speed shaft rotational speed is under a predefined value So; a predefined time delay To with respect to the beginning of the first stage is reached; a predefined high speed shaft torque level TLo is reached.