JP5890381B2 - Windmill rotor brake system - Google Patents

Description

  The present invention relates to a wind turbine rotor brake system for a wind turbine. The wind turbine comprises at least a tower, a nacelle in the tower, and a windmill rotor attached to the nacelle, the windmill rotor comprising any number of blades, preferably two or three blades, An interface in, for example, a rotor hub for rotatably fastening a windmill rotor to the nacelle, wherein the interface between the windmill rotor and the nacelle includes at least one bearing device comprising an inner bearing part and an outer bearing part. And at least one bearing component is rigidly connected to the main frame structure at the nacelle, and at least one other bearing component rotatably supports the wind turbine rotor and the weight of the wind turbine rotor and the To transmit the load from the wind load on the wind turbine rotor The wind turbine rotor further includes a main shaft for transmitting a rotational torque generated by wind with respect to the wind turbine rotor to a generator, and the wind turbine rotor brake system further includes a brake disk, One or more brake calipers.

  The invention further relates to a method of operating a wind turbine rotor brake system for a wind turbine using the wind turbine rotor brake system described above.

  Several types of brakes or locking systems for braking and / or locking the wind turbine rotor of the wind turbine, preferably in a defined position, in repair operations or other situations where the rotor needs to be stopped reliably It is well known to have. Also known are systems for locking individual blades of a wind turbine at a defined pitch position. The present invention relates to braking and locking of a wind turbine rotor relative to a nacelle / main frame of a wind turbine. The windmill rotor described above is to be interpreted as a rotor comprising a hub for converting wind into rotational energy and a predetermined number of wind turbine blades. The reason for this explanation is that a wind turbine is also a generator rotor (known as a generator rotor), typically rotating in close relation to another rotor or generator's stationary stator. It is because it prepares.

  A number of wind turbine transmissions are used to convert a somewhat slower windmill rotor rotation to a faster generator rotor rotation. This type of wind turbine often includes a disc brake system installed between the transmission and the generator to deal only with relatively low torque. Other wind turbines have a braking system installed in front of the transmission to deal with higher torque, but less rpm.

  In so-called direct drive wind turbines that are becoming more common, there is no transmission since the wind turbine rotor is directly coupled to the generator rotor. EP 2169220 (B1) illustrates an example of this type of solution and also describes the above prior art solution.

  In order to obtain a weight-saving and effective braking system, EP 2169220 (B1) discloses that an annular disk is installed on the inner surface of the generator rotor and brake pads are provided along the circumference of the annular disk. Disclosed is a prior art brake caliper installation. This braking system is installed at the opposite end of the main axis of the wind turbine relative to the position of the wind turbine rotor.

  The known solution has disadvantages and details need to be improved. First, in the known solution, the brake system is installed on the spindle and all systems are installed inside the nacelle. The nacelle becomes dirty with brake dust after using the brake. Over time, this becomes a problem for the delicate equipment in the nacelle, and naturally annoys maintenance personnel.

  In the case of the above solution with a brake system installed on the main shaft before or after the transmission or on the main shaft in the case of a direct drive wind turbine, the main shaft can take on the forces acting during braking. Must be rigid and rigid. The wind turbine rotor may have a diameter of, for example, 100 meters and a weight of up to 50 metric tons. Furthermore, the generator rotor also has a fairly large mass of up to 20 metric tons. In order to activate the brake system and stop such a large mass, it is necessary to meet very large demands. If the entire drive train, including the hub, main shaft and generator, is slack or has too much elasticity, the system will wear out at a rate that is too fast and eventually breaks, causing serious problems and losses. Such looseness exists to some extent. To constrain weight (which is always a concern in the wind turbine industry), existing brake systems require a rigid system with a rigid, large, heavy steel spindle, There are some problems.

  None of the existing braking systems disclose a braking system for wind turbines that solves the problem of braking the wind turbine rotor, main shaft and generator rotor as follows. In other words, it is installed near the wind turbine rotor, and the wind turbine rotor is installed on the main frame so as to transmit only the rotational force, that is, only the torque, so as not to transmit the weight of the wind turbine rotor or the bending moment from the generator rotor. A brake system with a designed spindle is not disclosed.

European Patent No. 2169220 (EP2169220B1)

  An object of the present invention is to provide a wind turbine rotor for a wind turbine comprising at least a wind turbine rotor braking system, preferably comprising or operating in unison with one or more mechanical locks for locking the wind turbine rotor in a fixed position. Is to provide a braking system.

  Furthermore, it is an object of the present invention to provide a wind turbine rotor braking system particularly suited for wind turbines, said wind turbine comprising a main shaft extending from a hub to a gear or a generator, said main shaft comprising at least one section of the main shaft. It comprises a fiber reinforced composite material and the main shaft is designed to transmit only the rotational force, i.e. only the torque, and not the weight of the wind turbine rotor or the bending moment from the generator rotor.

  As mentioned above, the present invention relates to a wind turbine rotor brake system for a wind turbine. The wind turbine comprises at least a tower, a nacelle in the tower, and a windmill rotor attached to the nacelle, the windmill rotor comprising any number of blades, preferably two or three blades, An interface in, for example, a rotor hub for rotatably fastening a windmill rotor to the nacelle, wherein the interface between the windmill rotor and the nacelle includes at least one bearing device comprising an inner bearing part and an outer bearing part. And at least one bearing component is rigidly connected to the main frame structure at the nacelle, and at least one other bearing component rotatably supports the wind turbine rotor and the weight of the wind turbine rotor and the To transmit the load from the wind load on the wind turbine rotor The wind turbine rotor further includes a main shaft for transmitting a rotational torque generated by wind with respect to the wind turbine rotor to a generator, and the wind turbine rotor brake system further includes a brake disk, One or more brake calipers.

  What is new and innovative in the present invention is that the brake disc is installed in a wind turbine rotor, such as a rotor hub or bearing part, such as an outer bearing part, and the one or more brake calipers are installed in a stationary plate. The fixing plate is installed on the main frame or on a bearing part, for example, an inner bearing part. The brake system, i.e. brake disc, fixing plate and brake caliper, and other fixtures are installed very close to the rotor hub / wind turbine rotor, which is due to the elasticity and slack in the wind turbine drive train. On the other hand, it is very important to prevent the possibility of the wind turbine rotor moving.

  For example, if the spindle weight is optimized to reduce costs and minimize the cost and weight of other parts (ie, reduced weight), the spindle is the wind turbine rotor for the entire system Does not have sufficient rigidity to prevent vibration. By installing the brake system very close to the hub, there is virtually no risk that the wind turbine rotor will vibrate when it stops and / or rocks, and therefore wear is drastically reduced.

  The above solution is beneficial in all systems where the wind turbine rotor hub is installed in tight connection with the nacelle mainframe. This is possible, for example, by attaching the hub to the main frame via a single bearing system. This kind of design is heretofore only used in connection with a so-called ring-type wind turbine generator, in which case there is no main shaft and the above-mentioned problems of elasticity and looseness do not occur. By installing the generator at the opposite end of the nacelle with respect to the wind turbine rotor, it is naturally necessary to have a main shaft that extends from the wind turbine rotor to the generator or to the transmission in front of the generator. Having this type of device provides several advantages. First, the nacelle weight balance at the top of the tower becomes more attractive. Another important thing is the accessibility of the generator, which is very important during installation and even more important when disassembling for maintenance and / or repair. If the generator is located at one end of the nacelle, it is rather easy to approach. If the generator is a ring wind turbine generator installed at the end of the same nacelle as the wind turbine rotor, the wind turbine rotor must be removed before removing the generator. This causes particularly high costs and extra work.

  As mentioned above, the present invention can be used with wind turbine structures having a hub attached to the mainframe via a single bearing system. As megawatt (MW) scale, the forces and reactions become very large, so this solution has been used mainly for relatively small wind turbines of kW scale so far. Hubs for wind turbines are usually manufactured from cast iron, but the hubs must take on a huge force in the MW turbine and thus deform quite severely during operation. However, it is possible to design a hub that can handle this load and that can be used with one bearing system.

  Another design that can be used to cope with high loads and deformation involves so-called rotor beams. In this case, the hub can be supported by at least (but typically) two sets of bearings. The rotor beam is firmly connected to the main frame of the nacelle and typically protrudes through the hub to support the load on the wind turbine rotor and to take on the force acting on the wind turbine rotor. Therefore, the rotational force to the power generation system can be transmitted through the main shaft, and the main shaft is designed to transmit only the rotational force, and is designed to support the wind turbine rotor and to take the bending moment from the wind turbine rotor. Not.

  In one embodiment of the wind turbine rotor brake system according to the present invention, the rotor brake system comprises a fixed plate, said fixed plate further comprising one or more sensing means, for example one or more inductive sensors, Said sensing means is arranged to control the position and / or speed of the wind turbine rotor relative to the sensing means on the stationary plate, i.e. the position and / or speed of the brake disc.

  Advantageously, the fixing plate and thus the brake caliper can be installed at least partly outside the hub in order to ventilate in use and to prevent dust from the brake from accumulating inside the nacelle. However, the fixing plate, caliper, and brake disc can be installed inside the nacelle.

  One or more sensing means as described above, for example one or more dielectric sensors, in one embodiment of the invention are adapted to control the position and / or speed of the wind turbine rotor relative to the sensing means, ie the position and / or speed of the brake disc. It can be installed on or near the fixed plate. After activating the brake system, the sensing means is activated and can be used to determine whether the wind turbine rotor is stopped. Furthermore, the sensing means can be used to measure a clearer position of the rotating parts of the brake system relative to the stationary parts of the brake system. The sensing means can be used to detect whether the wind turbine rotor is stationary as described above, but it is necessary to rotate the two-blade rotor to a horizontal position, for example, another 20 ° to perform maintenance work. It is also possible to detect that there is. If the wind turbine rotor needs to be rotated a little more, it is better to weaken the brake system just enough for the wind to rotate the wind turbine rotor to the desired position. The sensing means can comprise a magnet installed at a defined position on the brake disc, and the exact position for complete braking of the wind turbine rotor can be selected by detection of the magnet. Activation of the sensing means and detection of the magnet passing through the sensing means can be used to control the speed of the wind turbine rotor for any conceivable purpose.

  In another embodiment of the wind turbine rotor brake system according to the invention, the wind turbine rotor brake system comprises one or more preferably at least two lock mandrels for engaging complementary locking means in the rotor disk or wind turbine rotor. be able to. By activating this lock mandrel when the wind turbine rotor is in place, a high level of safety is obtained before servicing the wind turbine blade. The lock mandrel and the complementary locking means can be installed so that the wind turbine rotor can be locked to haw the blades in any desired direction, but in the case of a two blade wind turbine rotor, typically the vertical position and horizontal Lock in position. In the case of a three-blade windmill rotor, any wing can be locked in a vertical position along the tower, but any position is possible as described above.

  In a specific embodiment of the wind turbine rotor brake system according to the invention, the one or more locking mandrels can have a conical shape at the tip, which tip can be said complementary locking means, for example cylindrical or conical. It is designed to enter the hole. By making the lock mandrel conical at least at the tip, the lock mandrel can partially engage a mating part having complementary locking means. Activating the lock mandrel while releasing the brakes so that the wind turbine rotor is in the desired position, partially engages the mandrel as soon as a portion of the corresponding cylindrical or conical hole can engage the mandrel. Yes. Once a part of the lock mandrel is engaged, the brake caliper may be further relaxed and the windmill rotor is simply and completely locked by the lock mandrel. In this case, of course, it may be assisted by activating the brake caliper.

  In one embodiment of the wind turbine rotor brake system according to the present invention, the lock mandrel is, for example, a hydraulically actuated mandrel. This type of hydraulically operated mandrel is strong, sturdy and relatively simple and very reliable. The mandrel can also be engaged by a strong spring in the actuator for the locking means, and then the lock mandrel can be returned to the rest position using hydraulic pressure. This type of solution is very attractive when the locking procedure is implemented as a step in an emergency shutdown of the wind turbine (in this case only a limited power source is available). Furthermore, the lock can be advantageously maintained without any power at all.

  In another embodiment of the wind turbine rotor brake system according to the present invention, the brake disc may be a segmented brake disc comprising at least two or more disc segments. This allows for installation in smaller pieces, and more importantly, can repair the wear without completely disassembling the wind turbine rotor. The brake discs can be simply replaced one by one until the complete disc is replaced.

  In another embodiment of the wind turbine rotor brake system according to the present invention, the one or more brake calipers are fixed to the fixing plate using bolts or screws, and the one or more brake calipers are connected to the fixing plate. Individually aligned with the brake disc using one or more shims between the brake caliper. By using a shim between the fixed plate and the caliper, a very precise alignment of the caliper is obtained.

  In still another embodiment of the wind turbine rotor brake system according to the present invention, the one or more lock mandrels may be fixed to the fixing plate using bolts or screws, and the one or more lock mandrels may be connected to the fixing plate. One or more shims are used between the locking means and individually aligned in the complementary locking means, for example cylindrical or conical holes. Perfect alignment and perfect fit between the lock mandrel and complementary locking means (holes) is important to minimize or completely prevent loosening of the locking system. This is naturally supported by activating the brake caliper to act on the brake disc even when the lock mandrel is engaged.

  The present invention further includes a method of operating a wind turbine rotor brake system for a wind turbine using a wind turbine rotor brake system as described above. The wind turbine comprises at least a tower, a nacelle in the tower, and a windmill rotor attached to the nacelle, the windmill rotor comprising any number of blades, preferably two or three blades, For example, an interface in a rotor hub for rotatably fastening a wind turbine rotor to the nacelle, wherein the interface between the wind turbine rotor and the nacelle includes an inner bearing component and an outer bearing component. And at least one bearing part is rigidly connected to the main frame structure at the nacelle, and at least one other bearing part rotatably supports the windmill rotor and the weight and windmill of the windmill rotor. To transmit the load from the wind load on the rotor The wind turbine rotor further includes a main shaft for transmitting a rotational torque generated by wind in the wind turbine rotor to a generator, and the wind turbine rotor brake system further includes a brake disk, One or more brake calipers.

The novel and innovative method comprises at least the step of activating sensing means to measure the position and / or speed of the wind turbine rotor and / or brake disc;
Activating the brake caliper to the first braking step;
Detecting the position and speed of the wind turbine rotor and / or brake disc;
Activating the brake caliper to a second braking step;
Activating the locking mandrel or mandrel and inserting it into complementary locking means such as a cylindrical or conical hole;
including.

  The above steps for operating the brake system have already been described indirectly above. The first braking step described above for activating the brake caliper is mainly used in the first part of the braking operation in which the wind turbine rotor is stopped using the brake system. In order not to have a very large and powerful braking system, for example, wind turbine blades are operated to a position where the blades are disabled, for example by pitching the blades and / or by rotating the nacelle to an incapable position It is possible. In this case, the brake system need not be designed to take over the full load condition. As described above, the first braking step may include the step of activating the brake to bring the wind turbine rotor to a stationary state. As long as the sensing means detects rotation, the first braking step proceeds. After detecting the stationary or very slow rotational speed of the windmill rotor, the second braking step may be applied. This second braking step can be configured as follows. That is, the brake is weakened and the wind turbine rotor is preferably rotated very slowly to activate the lock mandrel to a position where it can be just engaged with the complementary locking means, and the locking means actuates to fully lock the wind turbine rotor. It can be fixed in position. The second braking step can be maintained until the lock mandrel or mandrel is released from engagement.

In a final embodiment of the method for operating a wind turbine rotor brake system according to the invention, the method further comprises:
Releasing the brake caliper after activating the lock mandrel or mandrel and inserting at least a specified length into a complementary locking means such as a cylindrical or conical hole;
Activating the locking mandrel or mandrel and inserting it further into the complementary locking means, e.g. a cylindrical or conical hole;
Can be included.

  The steps include a method for obtaining final positioning of the wind turbine rotor relative to the lock mandrel. By releasing or relieving the brake after at least the tip of one or more lock mandrels has been inserted, the mandrel assists in rotating the windmill rotor, causing the lock mandrel to be fully inserted into the complementary locking means. After this final step, the brake can be activated again or not.

  One embodiment of the invention will now be described by way of example only with reference to the accompanying drawings.

2 shows a two-blade partially pitched wind turbine. 1 shows a nacelle for a wind turbine. The hub installed in the rotor beam is shown. FIG. 2 shows a cross-sectional view of a rotor brake system in a hub installed on a rotor beam. Fig. 5 shows a stationary plate with four brake calipers and two lock mandrels. Fig. 6 shows a fixing plate viewed from the opposite side of Fig. 5. The main frame of nacelle is shown.

  In the text below, the drawings are described one by one, and various parts and positions of the drawings are numbered the same in different drawings. All parts and positions indicated in a particular drawing are not necessarily discussed together with that particular drawing.

  FIG. 1 shows a two-blade wind turbine 1. The wind turbine 1 includes a tower 2 that extends from a ground foundation 3 to a nacelle 4 at the top of the tower 2. A windmill rotor 5 is installed at one end of the nacelle 4. The wind turbine rotor 5 includes a hub 6 and two blades 7. In this case, the blades 7 are so-called partial pitch blades each including an inner blade portion 8 and an outer blade portion 9. The outer wing portion 9 can be pitched relative to the inner wing portion 8 using a pitch mechanism. A yaw mechanism (not shown in the figure) is installed between the tower 2 and the nacelle 4 so that the nacelle 4 rotates with respect to the tower 2 and can direct the wind turbine rotor 5 in a specific direction according to the wind direction. To.

  FIG. 2 shows the nacelle 4. Part of the nacelle has been removed to show the general structure. The hub 6 is visible at one end of the nacelle 4, and the main shaft 11 extends from the hub 6 to the other end of the nacelle 4 and is attached to the generator 12. The generator 12 is fixed to the main frame 13 of the nacelle 4, and the rotor beam 14 is similarly fixed to the main frame 13. The rotor beam 14 is a structural part that actually supports the load from the wind turbine rotor 5. The manner in which the rotor beam 14 and the hub 6 are attached to the rotor beam will become more apparent in the description of FIGS. 3 and 4, but as is apparent in FIG. Are attached to the hub 6 and the generator 12. Further, it can be seen that the main shaft 11 is not supported by the bearing because it is installed and configured exclusively to transmit the rotational force from the wind turbine rotor 5 to the generator 12. The rotation-side hub 6 is supported by a fixed-side rotor beam 14. Thus, the main shaft 11 need not be as rigid or rigid as prior art solutions because the rotor beam 14 takes on all other loads other than rotational loads. Since the main shaft 11 does not need to be so sturdy, it can be made from fiber reinforced plastic, such as glass fiber, or other suitable composite material, which can be any shape of steel or other type of metal, such as the main shaft. 11 may comprise a fiber / thin thread wound around 11, a thin-wall profile or a long strip metal plate.

  Since the main shaft is not so sturdy, it is necessarily more flexible, and in some cases, when subjected to loads by the wind turbine rotor 5 and generator 12, some degree, but relatively low, from one end to the other. Can withstand angular twist. According to the present invention, by installing a brake system including at least the fixed plate 16, the brake caliper 17 and the brake disk 18 between the main frame 13 and the hub 6, the elasticity of the main shaft 11 can be improved. When installed, it is realized not to cause problems that have been common for many years.

  FIG. 3 shows the hub 6 in the rotor beam 14, to which an anchor plate 16 is attached to the inner end of the rotor beam 14 using a predetermined number of attachment holes 19. Three brake calipers 17 are installed at each end of the fixed plate 16 to interact with the brake disc 18. Furthermore, the fixing plate 16 is provided with an opening 20 for a locking mandrel, and the brake disc is provided with a locking means 21-hole for engaging a locking mandrels.

  FIG. 4 is a cross-sectional view of the same as FIG. 3, but the main body of the rotor beam 14 is well understood in this view. From this figure, it can be seen that the hub 6 is supported by the rotor beam 14 via the front bearing 22 and the rear bearing 23. At the front end of the hub 6, which is the end with the front bearing 22, it is intended that a drive shaft be arranged as shown in FIG.

  FIGS. 5 and 6 show a fixing plate 16 for the brake system, FIG. 5 shows the surface on which the brake caliper 17 is mounted, this surface of the fixing plate 16 being attached to the brake disc 18 as shown in FIGS. It is the surface to face. The caliper 17 is mounted and adjusted using a caliper shim 24 that allows the brake caliper 17 to be positioned very precisely with respect to the brake disc 18. Furthermore, FIG. 5 shows a conical locking mandrel 25. The locking mandrel can be activated to engage the corresponding locking means 21 of the brake disc 18.

  FIG. 6 shows the fixing plate 16 viewed from the other side, from which it can be seen that the actuator 26 for the lock mandrel 25 is attached to the opening of the fixing plate 16 using bolts. The actuator is, for example, a hydraulic actuator, but other types of actuators may be suitable. Furthermore, it can be seen that the caliper 17 is also attached to the fixed plate 16 using a predetermined number of bolts.

  Finally, FIG. 7 shows the main for the nacelle 4 with a first end with a flange 27 for attaching the rotor beam 14 and the anchor plate 16 and an opposite second end for attaching the generator 12. A frame 13 is shown. The part of the yaw mechanism 10 is shown in the lower part of the main frame 13.

  The invention is not limited to the embodiments described herein, but can be modified or adapted without departing from the scope of the invention described in the claims.

DESCRIPTION OF SYMBOLS 1 Wind turbine 2 Tower 3 Foundation 4 Nacelle 5 Windmill rotor 6 Hub 7 Wing 8 Inner wing part 9 Outer wing part 10 Yaw mechanism 11 Main shaft 12 Generator 13 Main frame of nacelle 14 Rotor beam 15 Main shaft flange 16 Fixing plate 17 Brake caliper 18 Brake disc 19 Fixing plate mounting hole 20 Lock plate fixing plate opening 21 Brake disc locking means 22 Front bearing 23 Rear bearing 24 Caliper shim 25 Conical lock mandrel 26 Lock mandrel actuator 27 Main frame Flange

Claims (10)

A wind turbine rotor brake system for a wind turbine, wherein the wind turbine comprises at least a tower, a nacelle in the tower, and a wind turbine rotor attached to the nacelle;
The wind turbine rotor comprises any number of blades and an interface for fastening the wind turbine rotor to the nacelle for rotation;
The interface between the wind turbine rotor and the nacelle comprises at least one bearing device comprising a rotor beam, an inner bearing part and an outer bearing part, and the at least one bearing part is firmly connected to the rotor beam. And at least one other bearing part is rotatably connected to the wind turbine rotor for rotatably supporting the wind turbine rotor, and transmits the weight of the wind turbine rotor and the load from the wind load applied to the wind turbine rotor. Further, the rotor beam is firmly connected to the main frame structure in the nacelle,
The wind turbine rotor further includes a main shaft for transmitting rotational torque generated by wind in the wind turbine rotor to a generator;
The windmill rotor brake system further includes a brake disk and one or more brake calipers,
The brake disc is configured to be installed on the wind turbine rotor or one bearing component of the wind turbine rotor;
The one or more brake calipers are disposed on a stationary plate;
The wind turbine rotor brake system according to claim 1, wherein the fixing plate is configured to be installed between the main frame and the rotor beam.   The stationary plate further comprises one or more sensing means, the sensing means controlling the position and / or speed of the wind turbine rotor relative to the sensing means in the stationary plate, i.e. the position and / or speed of the brake disc. The wind turbine rotor brake system according to claim 1, wherein the wind turbine rotor brake system is installed as follows.   Wind turbine rotor brake according to claim 1 or 2, characterized in that the wind turbine rotor brake system comprises one or more locking mandrels for engaging the brake disc or complementary locking means of the wind turbine rotor. system.   Wind turbine rotor brake system according to claim 3, characterized in that the one or more locking mandrels have a conical shape at the tip, and the tip is designed to enter the complementary locking means. Wind turbine rotor brake system according to claim 3 or 4, characterized in that the one or more lock mandrels are hydraulically actuated mandrels.   Wind turbine rotor brake system according to any one of the preceding claims, characterized in that the brake disc is a segmented brake disc comprising at least two or more disc segments.   The one or more brake calipers are fixed to the fixing plate using bolts or screws, and the one or more brake calipers are used to fix the brake using one or more shims between the fixing plate and the brake caliper. The wind turbine rotor brake system according to any one of claims 1 to 6, wherein the wind turbine rotor brake system is individually aligned with a disk. The one or more lock mandrels are fixed to the fixed plate using bolts or screws, and the one or more lock mandrels use one or more shims between the fixed plate and the complementary locking means. characterized in that it is aligned individually to said complementary locking means Te, windmill rotor braking system according to any one of claims 3-5. A method for operating a wind turbine rotor brake system for a wind turbine using the wind turbine rotor brake system according to claim 1,
The wind turbine comprises at least a tower, a nacelle in the tower, and a windmill rotor attached to the nacelle;
The wind turbine rotor comprises any number of blades and an interface for fastening the wind turbine rotor to the nacelle for rotation;
The interface between the wind turbine rotor and the nacelle comprises at least one bearing device comprising a rotor beam, an inner bearing part and an outer bearing part, the at least one bearing part being firmly connected to the rotor beam And at least one other bearing part is rotatably connected to the wind turbine rotor for rotatably supporting the wind turbine rotor, and transmits a weight of the wind turbine rotor and a load from a wind load applied to the wind turbine rotor. Therefore, the rotor beam is firmly connected to the main frame structure in the nacelle,
The wind turbine rotor further includes a main shaft for transmitting rotational torque generated by wind in the wind turbine rotor to a generator;
The wind turbine rotor brake system further comprises a brake disc and one or more brake calipers;
Activating at least sensing means arranged on a stationary plate for measuring the position and / or speed of the wind turbine rotor and / or the brake disc, the stationary plate comprising the rotor beam and the main It is installed between the frame and
Activating the brake caliper to a first braking step;
Detecting the position and speed of the wind turbine rotor and / or the brake disc;
Activating the brake caliper to a second braking step;
Activating and inserting one or more locking mandrels of the wind turbine rotor braking system into the brake disk or complementary locking means of the wind turbine rotor;
A method comprising the steps of: The method further comprises at least:
Releasing the brake caliper after activating the locking mandrel and inserting at least a specified length into the complementary locking means;
Activating the locking mandrel and inserting further into the complementary locking means;
The method of claim 9, comprising: