88 results about "Yaw drive" patented technology

Systems, methods, and computer program products for controlling a yaw system of a wind turbine. The yaw system includes mechanical brakes that provide a first amount of braking torque when closed. The yaw system is configured to transition from a yawing state to a parked by brake state by closing mechanical brakes in a first subset of the mechanical brakes and opening each mechanical brake in a second subset of the mechanical brakes. The second subset provides a second amount of braking torque that is less than the first amount of braking torque. In response to detecting a rotation of the nacelle while in the parked by brake state, the yaw system is configured to transition from the parked by brake state to a parked by motor state in which yaw drives are activated to provide a counter acting torque in opposition to the detected rotation of the nacelle.

The invention relates to the technical field of risk analysis, in particular to an offshore wind power project risk assessment method and system, and the method comprises the following steps: collecting a wind speed value according to the hub height of multiple units of an offshore wind power plant, obtaining the unit power, yaw angle change and vibration amplitude, and calculating the wind speed change rate; according to the method, through combination of blade vibration, yaw driving feedback and tower stress monitoring data and multi-source information cross analysis, the calculation precision of the unit load fluctuation rate is improved, the wind shear influence is quantified through the wind shear strength coefficient, and the risk prediction capability under the condition of dramatic change of the wind speed is improved; yaw error cumulative effect dynamic evaluation optimizes unit yaw precision management and control, reduces influence of long-term operation deviation on equipment stability, computes unit operation state unstable factors through multi-dimensional data fusion, comprehensively quantifies wind speed change, load fluctuation and yaw error influence, perfects a risk evaluation system, optimizes a wind turbine generator risk evaluation model, and improves wind turbine generator risk evaluation accuracy. And the safety management level of offshore wind power projects is improved.

A wind turbine nacelle includes a stub mast, a frame rotatably mounted on the stub mast, and a yaw drive system that rotates the frame to adjust orientation of the frame. The yaw drive system includes a yaw brake assembly positioned coaxially with the stub mast that exerts a constant braking torque on a brake disk connected to the frame and has a brake pad with a coefficient of friction that creates the braking torque without slipstick.

The invention relates to the technical field of wind power generation. The invention provides an emergency yaw and automatic crosswind method and system for a wind turbine generator. The method comprises the following steps: monitoring the on-off state of a safety chain in real time, and activating an emergency power supply switching module when detecting that the safety chain is disconnected; synchronously acquiring unit vibration spectrum, impeller rotating speed, environment wind speed and cabin load distribution data, and generating dynamic risk assessment parameters based on a multi-source signal fusion algorithm; inputting a hierarchical control instruction to a yaw driver according to a comparison result of the risk assessment parameter and a preset threshold value; and in the automatic crosswind control stage, the yaw rate and the angle offset are dynamically adjusted based on the blade root bending moment real-time feedback and the wind speed change rate, so that the unit maintains the aerodynamic load balance in the non-windward state. The problems that after a safety chain of an existing wind turbine generator is disconnected, yaw capacity is completely lost, emergency crosswind protection or fault recovery cannot be achieved, and a traditional emergency yaw scheme is high in cost, complex in maintenance, slow in response, difficult to adapt to complex working conditions and the like are solved.

The present disclosure relates to methods (100, 200, 300) for controlling a wind turbine (10) during a yaw operation. The present disclosure further relates to control systems (92) for wind turbines and to wind turbines (10). A method for operating a wind turbine (10) during yaw operation comprises operating one or more yaw drives (35) to rotate the nacelle (16) with respect to the tower (15). In addition, the method comprises predicting an end of the yaw operation and, in response to predicting an end of the yaw operation, actuating a hydraulic brake (94) before the predicted end.

The present disclosure relates to a method (100) for operating a yaw sytem of a wind turbine (10), the yaw system comprising a yaw bearing (98), an annular gear (31) and a plurality of yaw drives (35) including a motor (33) with a motor brake (91), a gearbox (37) and a pinion (39) operatively connected with the motor (33). The method (100) comprises operating the plurality of yaw drives (35) to rotate a nacelle (16) with respect to a tower (15) of the wind turbine (10). The method further comprises stopping rotation of the nacelle (16) with respect to the tower (15), including closing the motor brakes (91) of the yaw drives (35). Furthermore, the method (100) comprises, after a waiting time, balancing loads experienced by the plurality of yaw drives (35) of the yaw system. The present disclosure also relates to a control system (92) for a wind turbine (10) that is configured to carry out such method (100).

A system and method are configured to monitor changes associated with an air gap in a brake assembly of a wind turbine yaw drive by: (1) receiving one or more sensor signals from one or more sensors that are indicative of changes associated with the air gap; and (2) comparing the changes associated with the air gap to certain thresholds to determine if the air gap is in need of attention. The system includes at least one proximity sensor arranged adjacent to the air gap, to monitor the air gap, and a controller. The controller is configured to receive the sensor signal(s) indicative of the changes associated with the air gap. The controller also is configured to compare the changes associated with the air gap to one or more air gap thresholds, and to implement a control action based on this comparison.

The present disclosure relates to a method (100, 200, 300) for controlling a wind turbine (10) during yaw operation. The disclosure further relates to a control system (92) for a wind turbine and a wind turbine (10). A method for operating a wind turbine (10) during yaw operation includes operating one or more yaw drivers (35) to rotate a nacelle (16) relative to a tower (15). In addition, the method includes predicting an end of the yaw operation, and in response to predicting the end of the yaw operation, actuating the hydraulic brake (94) prior to the predicted end.

Method for replacing an installed yaw ring (1) of a wind turbine (2) with a replacement yaw ring (3), wherein in an initial state of the wind turbine (2) a bedframe (4) of the wind turbine (2) is pivot-mounted to a topmost segment (5) of a tower (6) of the wind turbine (2), the installed yaw ring (1) is mounted to the topmost segment (5), and at least one yaw drive (7) of the wind turbine engages (2) the installed yaw ring (1) to rotate the bedframe (4) with respect to the topmost segment (5) when the yaw drive (7) is operated, the method comprising the steps of: lifting a module (8) of the wind turbine (2), which comprises the bedframe (4), the topmost segment (5), and the installed yaw ring (1), off a tower stump (9) of the tower (6) formed by at least one further segment (10-12) of the tower (6) and placing the module (8) in a servicing position (13), detaching a submodule (17) of the module (8) comprising the bedframe (4) from the topmost segment (5) and moving the submodule (17) to a holding position (18), unmounting the installed yaw ring (1) form the topmost segment (5), mounting the replacement yaw ring (3) to the topmost segment (5), reattaching the submodule (17) to the topmost segment (5), to form a refurbished module (19) comprising the bedframe (4), the topmost segment (5), and the replacement yaw ring (3), and lifting the refurbished module (19) onto the tower stump (9).

The utility model relates to a yaw driving system of a wind generating set, which comprises a central driving device arranged at the central position of a rack and used for driving the rack to rotate, a barrel body arranged below the rack, and the rack and the barrel body are coaxial; the rotary supporting mechanism is arranged between the rack and the barrel; and the central driving end of the central driving device is in transmission connection with the rack. According to the yaw driving system of the wind generating set, the center driving device is arranged at the position of the center axis of the rack to drive the rack to rotate, and the problems that in the prior art, the number of driving speed reducers is large, and asynchronization exists are solved; the driving device of the yaw driving system of the wind generating set is installed in the center, so that power transmission can be optimized, the stability and transmission efficiency of the whole structure are improved, vibration caused by uneven wind power is reduced, and the layout of the internal space of the rack is optimized.

The utility model discloses a wind turbine yaw driving device, cladding central ring disk, support arm, hydraulic pump and hydraulic motor, the periphery of central ring disk is integrally molded with a plurality of evenly distributed support arm, the outer end of each support arm is provided with an outer mounting hole, the hydraulic motor is fixedly installed in the outer mounting hole, the hydraulic pump is connected with the hydraulic motor, and the hydraulic pump is connected with the hydraulic motor. The output end of the hydraulic motor is fixedly provided with a driving gear, the middle of the central ring disc is provided with an inner mounting hole, the inner mounting hole is internally and fixedly provided with a hydraulic pump, the upper surface of the central ring disc is fixedly provided with a backflow pressure overflow valve, and the lower surface of the central ring disc is fixedly provided with an oil tank; the hydraulic motor is synchronously driven to work through the hydraulic pump, then synchronous driving force is generated, the debugging process of the whole device is greatly shortened, meanwhile, inertial impact generated in the stopping process can be effectively absorbed through hydraulic driving, overload pressure is relieved through the arranged backflow pressure overflow valve, and the safety of the device is improved. And the working stability of the device is ensured.

The invention provides a yaw system testing method and device, electronic equipment and a readable storage medium, and belongs to the technical field of wind turbine generator testing. The yaw system comprises a yaw braking mechanism and a yaw driving mechanism. The method comprises the steps that braking torque information of the yaw braking mechanism is obtained; according to the braking torque information, the theoretical driving torque of the yaw driving mechanism is determined; based on the braking torque information, a yaw braking mechanism is controlled to generate a corresponding target braking torque; after a first preset duration, the yaw driving mechanism is controlled to generate a corresponding theoretical driving torque; after a second preset duration, the variable quantity of the yaw angle of the yaw system is obtained; if the variable quantity is smaller than or equal to the preset threshold value, the yaw system is judged to be qualified; otherwise, the yaw system is judged to be unqualified, and an alarm is given. According to the invention, the performance test of the yaw system can be realized, and whether the operation of the yaw system meets the design requirements or not can be accurately verified.

The invention discloses a yaw self-checking system and self-checking method for a wind generating set, and relates to the technical field of wind driven generators. The yaw self-checking system comprises a sensing system, a data collector and a data analysis module; the sensing system comprises displacement sensors and current sensors, the current sensors are installed on power supply lines of yaw driving motors, and each driving motor is provided with at least one current sensor; the displacement sensor is installed on a front rack of the wind generating set, the tooth top of a yaw bearing gear ring serves as an induction reflection face, and the displacement sensor is an eddy current sensor. The data acquisition unit is used for acquiring real-time current signals of each displacement sensor and each current sensor; the data analysis module is used for analyzing the real-time current signals of the displacement sensor and the current sensors collected by the data collector, obtaining a fault analysis result and sending the fault analysis result to the master control system. Through active driving detection in a shutdown state and in combination with synchronous analysis of current and displacement, accurate identification of yaw driving motor system faults and gear ring jumping can be realized, and early diagnosis and early warning of the faults of the yaw system are realized.

Method for replacing an installed yaw ring (1) of a wind turbine (2) with a replacement yaw ring (3), wherein in an initial state of the wind turbine (2) a bedframe (4) of the wind turbine (2) is pivot-mounted to a topmost segment (5) of a tower (6) of the wind turbine (2), the installed yaw ring (1) is mounted to the topmost segment (5), and at least one yaw drive (7) of the wind turbine engages (2) the installed yaw ring (1) to rotate the bedframe (4) with respect to the topmost segment (5) when the yaw drive (7) is operated, the method comprising the steps of: lifting a module (8) of the wind turbine (2), which comprises the bedframe (4), the topmost segment (5), and the installed yaw ring (1), off a tower stump (9) of the tower (6) formed by at least one further segment (10-12) of the tower (6) and placing the module (8) in a servicing position (13), detaching a submodule (17) of the module (8) comprising the bedframe (4) from the topmost segment (5) and moving the submodule (17) to a holding position (18), unmounting the installed yaw ring (1) form the topmost segment (5), mounting the replacement yaw ring (3) to the topmost segment (5), reattaching the submodule (17) to the topmost segment (5), to form a refurbished module (19) comprising the bedframe (4), the topmost segment (5), and the replacement yaw ring (3), and lifting the refurbished module (19) onto the tower stump (9).

The invention discloses a variable-pitch auxiliary yaw wind facing control method and system for a wind turbine generator, and the method comprises the steps: planning an optimal yaw track based on the measured cabin direction and average wind direction, and outputting a cabin yaw target angle; according to the cabin yaw target angle, a yaw variable pitch instruction of each blade is calculated and used for generating a yaw moment on a wind wheel plane to push a cabin to yaw; according to the actual yaw rate of the cabin, a yaw resistance-increasing pitch-changing instruction of each blade is calculated and used for controlling the yaw rate to be stable in the yaw process of the cabin; the yaw variable pitch instruction and the yaw resistance-increasing variable pitch instruction of each blade are superposed and then superposed with a unified variable pitch instruction given by a unit, and a final variable pitch instruction of each blade is obtained; and the final variable-pitch instruction of each blade is transmitted to a variable-pitch system of the unit, and the variable-pitch system drives the blades to change the pitch, so that a cabin is driven to yaw. The problem of insufficient yaw driving capacity can be effectively solved, and the number of yaw driving motors is reduced.

The invention relates to the technical field of wind power generation, and discloses a yaw side wind facing protection system which is characterized in that a safety monitoring device sends a failure signal when a main control unit or a yaw motor fails; the control unit receives the failure signal and the wind speed signal and sends a wind turbine generator emergency shutdown signal when the wind speed exceeds a set limit value; the mechanical connecting device rotates along with the main shaft when the impeller rotates; the energy storage structure stores kinetic energy of the mechanical connecting device; and when the control unit sends out an emergency shutdown signal of the wind turbine generator and receives a failure signal, the energy storage structure is controlled to release energy, and the yaw driving unit is driven to drive the cabin to perform emergency yaw operation until a safe position is reached. When emergency shutdown is carried out and the main control unit or the yaw motor is in a failure state, the yaw side wind facing protection system mainly utilizes the mechanical transmission device, energy input is reduced through cabin yaw side wind facing, energy is absorbed through the energy storage structure, impeller speed reduction is achieved, and overspeed and safety accidents are prevented.

The utility model discloses a yaw driver repairing and debugging device based on a wind turbine generator, and relates to the technical field of wind turbine generators, the yaw driver repairing and debugging device comprises a first limiting connecting ring, a rotation limiting groove is formed in the first limiting connecting ring, and a bearing ball is rotatably connected in one side of the rotation limiting groove; and a rotating ring is rotationally connected to the interior of the rotating limiting groove, a connecting rod is fixedly connected to the bottom end of one side of the rotating ring, and a main force gear rotating disc is fixedly connected to the bottom end of one side of the connecting rod. First driving motors on first mounting side plates on the two sides of a first limiting connecting ring are arranged to directly control rotation of a repairing debugging gear, yaw driving repairing operation is achieved for a main force gear rotating disc, rotation transmission operation is synchronously achieved on the two sides, and the transmission repairing efficiency of the device is improved; rotation of the main force gear rotating disc can drive the rotating ring to rotate in the rotating limiting groove, and deviation correction operation is achieved through the rotating angle of the rotating ring relative to the power main shaft.

Yaw drive monitoring method The invention describes a method of monitoring a wind turbine yaw system (2) comprising a plurality of yaw drives (D1, …, D8), which method comprises, for each yaw drive (D1): receiving encoder data (Eout) from a motor speed encoder (E) of that yaw drive (D1); computing a signal mean (10M) on the basis of the received encoder data (Eout); computing a collective signal mean (10Mcoll) from the signal means (10M) of the other yaw drives (D2, …, D8); comparing the signal mean (10M) to the collective signal mean (10Mcoll); and flagging that yaw drive (D1) as potentially faulty if the corresponding comparison result (10Δ) exceeds a predefined threshold (10T). The invention further describes a monitoring arrangement (1) for a wind turbine yaw system (20); and a 15 wind turbine (2) comprising such a monitoring arrangement (1).

The application discloses a kind of wind turbine's auxiliary yawing of variable pitch to wind control method and system, comprising: based on the direction of measured cabin and average wind direction, optimal yaw trajectory is planned, and cabin yaw target angle is output;According to cabin yaw target angle, the yaw variable pitch instruction of each blade is calculated, for generating yaw moment in wind wheel plane to promote cabin yawing;According to the yaw rate of cabin actual yawing, the yaw variable pitch instruction of each blade is calculated, for controlling yaw rate smooth in cabin yawing process;After the superposition of the yaw variable pitch instruction of each blade and yaw variable pitch instruction of each blade, the superposition of the unified variable pitch instruction given by unit is carried out, and the final variable pitch instruction of each blade is obtained;The final variable pitch instruction of each blade is transmitted to the variable pitch system of unit, and the variable pitch of blade is driven by variable pitch system, to realize driving cabin yawing.The application can effectively solve the problem of insufficient yaw driving capacity, and reduce the number of yaw driving motor.

To provide a wind power generation device and a control method of the wind power generation device capable of preventing an excessive load from acting on a yaw driving device by detecting a load directly acting on the yaw driving device by a simple method without adding a load sensor or the like.SOLUTION: A yaw-controllable wind turbine power generating apparatus includes a rotor 14 and a nacelle 3, and further includes a state quantity acquisition unit configured to acquire a state quantity that varies in accordance with a yaw-direction behavior of the wind turbine power generating apparatus, and a control device 15 configured to determine a yaw high load state of the wind turbine power generating apparatus on the basis of the state quantity.SELECTED DRAWING: Figure 4

A braking force measuring method for a wind turbine is provided. The wind turbine includes a ring gear, a yaw drive device driving a pinion meshing with the ring gear to make the wind turbine turn, and a brake device that prevents the nacelle from turning in the yaw direction by pressing a friction body against the ring gear. The method includes: braking the ring gear by the brake device; measuring a load on a rotating shaft of the pinion that mesh with the braked ring gear; determining a maximum value of the load during a time period when input torque is applied to the pinion, the input torque being applied with the nacelle held still and until the friction body begins to slip and the nacelle begins to turn in the yaw direction; and converting the determined load to the braking force.

The utility model discloses a wind turbine generator yaw drive carrying device which comprises a first supporting frame, a second supporting frame and a first hanging beam piece, the side end of the first supporting frame is fixedly connected with the second supporting frame, and the upper end of the first supporting frame and the upper end of the second supporting frame are fixedly connected with the first hanging beam piece. The side end of the third supporting frame is fixedly connected with a fourth supporting frame, and the third supporting frame and the fourth supporting frame are fixedly connected with a third hanging beam piece; the lower end of the first hanging beam piece and the lower end of the third hanging beam piece are fixedly connected with a second hanging beam piece through first gaskets and screws, the lower end of the second hanging beam piece is supported through a supporting base, pulleys are arranged on the first hanging beam piece and the third hanging beam piece in a sliding mode, and a first protection cover is arranged at the lower end of the pulley located on the first hanging beam piece in a hanging connection mode. And a second protective cover is hung at the lower end of the first hanging beam piece on the third hanging beam piece. The utility model relates to a yaw-driven carrying device for a wind turbine generator, which achieves the purpose of carrying through the arrangement of the structure.

The utility model provides a yaw driving rotating speed monitoring device of a wind turbine generator set, which is used for realizing high-precision and low-cost monitoring of yaw driving rotating speed and realizing rapid installation and maintenance of the device. The yaw driving rotating speed monitoring device of the wind turbine generator comprises an electromagnetic brake, a yaw driving motor, a proximity switch support, an inductance type proximity switch and a flange plate provided with a speed measuring hole. A central shaft of the yaw driving motor sequentially penetrates through the electromagnetic brake and the flange plate; a plurality of speed measuring holes are evenly distributed in the flange plate in the circumferential direction of the flange plate. The proximity switch support is fixedly installed on the side, facing the flange plate, of the proximity switch support. The induction end of the inductance type proximity switch is perpendicular to the surface of the flange plate and right faces the rotation track of the speed measurement hole, and a preset detection distance is kept between the induction end of the inductance type proximity switch and the surface of the flange plate.

Systems, methods, and computer program products for controlling a yaw system of a wind turbine. The yaw system includes mechanical brakes that provide a first amount of braking torque when closed. The yaw system is configured to transition from a yawing state to a parked by brake state by closing mechanical brakes in a first subset of the mechanical brakes and opening each mechanical brake in a second subset of the mechanical brakes. The second subset provides a second amount of braking torque that is less than the first amount of braking torque. In response to detecting a rotation of the nacelle while in the parked by brake state, the yaw system is configured to transition from the parked by brake state to a parked by motor state in which yaw drives are activated to provide a counter acting torque in opposition to the detected rotation of the nacelle.

The invention belongs to the field of fan control, and particularly relates to a fan yaw automatic control method and system based on dynamic deviation tracking, and the method comprises the steps: collecting real-time operation parameters through a sensing device and a monitoring system configured by a fan; screening and standardizing the real-time operation parameters to form a yaw control analysis data set; decomposing the yaw deviation by adopting a deviation decomposition algorithm to obtain a steady-state deviation component and a dynamic fluctuation deviation component; inputting the real-time operation parameters into a power loss analysis model, outputting a power loss sensitivity coefficient, and calculating a deviation correction angle as a dynamic correction instruction; and the dynamic correction instruction is issued to a fan yaw driving system, the cabin is controlled to adjust the orientation according to the deviation correction angle, and safety monitoring is carried out based on cabin load data. According to the method, the problems of insufficient yaw control precision and more yaw related power loss caused by the fact that steady-state deviation and dynamic fluctuation deviation are not distinguished in traditional fan yaw control are solved.

The utility model discloses a yaw driving hoisting tool for a wind generating set. The yaw driving hoisting tool comprises a first portal frame, a second portal frame, a first hoisting beam, a second hoisting beam, a third hoisting beam and a pulley, the first portal and the second portal are fixed to the top of a bearing seat and the top of a gear box elastic support of the wind generating set respectively. The first hanging beam is arranged on the top of the first portal, the top of the second portal and the top of the cabin support in a striding mode. The second hanging beam spans the top of the cabin support, one end of the second hanging beam is close to a cabin object hanging opening, and the other end of the second hanging beam is located beside the first hanging beam; the third hanging beam is fixed to the top of the first portal, one end of the third hanging beam intersects with the first hanging beam, and the other end of the third hanging beam extends to the position above the yaw drive installation position. And pulleys are respectively arranged on the bottom surfaces of the first hanging beam, the second hanging beam and the third hanging beam. The yaw driving device can effectively solve the problems that the distance between a cabin object lifting opening and a yaw driving installation position is long, the internal space of a cabin is narrow, and the yaw driving weight is heavy, so that the yaw driving is inconvenient to lift.

The invention provides a wind power generation visualization teaching aid and method based on wind direction and wind speed real-time perception, and belongs to the technical field of teaching aids and wind power generation. The method is realized based on a visual teaching aid, and the visualization method comprises the following steps: 1, establishing a coordinate system and a data reference, initializing the teaching aid, collecting environmental parameters, and filtering the environmental parameters to obtain actual wind speed data; secondly, real-time wind direction following of the wind driven generator is achieved through a yaw driving module, and wind direction tracking and yaw adjusting control are carried out; 3, calculating wind energy and power generation efficiency; 4, performing visual display and data synchronous updating; and 5, system state monitoring and exception handling are carried out. According to the invention, real-time detection of wind direction and wind speed, autonomous yaw adjustment of the wind driven generator and dynamic calculation of wind energy and power generation efficiency are realized in combination with a plurality of modules, and the wind power generation process is clarified through visual display of multiple dimensions, so that the interaction of the teaching process is enhanced.

The present invention relates to a method (100), a moving device (300) and a system (200) for moving a yaw drive (201) in a wind turbine (203).

This invention relates to a method for controlling the yaw of a wind turbine system by controlling multiple yaw drive actuators. Based on a requested motor speed reference as an input signal and an average motor speed reference as a feedback signal, the method determines a desired motor torque reference as the output signal for the multiple yaw drive actuators. The multiple yaw drive actuators rotate the nacelle or a structure comprising multiple nacelles, thereby providing a uniform load distribution to the multiple yaw drive actuators.