CN-122014494-A - Multi-section hinged self-adaptive wind turbine blade tip winglet system

CN122014494ACN 122014494 ACN122014494 ACN 122014494ACN-122014494-A

Abstract

The application discloses a multi-section hinged self-adaptive wind turbine blade tip winglet system, and relates to the field of wind power. The intelligent air-conditioning fan comprises at least four sections of winglet structures hinged end to end, wherein the hinged parts are driven to rotate by corresponding servo motors, each section of winglet is bent and rotated on a plane perpendicular to the front-stage winglet structure or rotated along the length direction of the front-stage winglet structure, strain gauges are adhered to the root parts of each section of winglet structure, temperature sensors, icing sensors and gradient heating films are distributed on the surfaces of the winglet structures, a winglet control cabinet is arranged in a fan blade body and is electrically connected with each section of servo motor and sensing equipment, and gesture adjustment and heating deicing are carried out on each section of winglet structure according to data acquired by a fan main control system and the sensing equipment.

Inventors

Wei Xusong
CAO YU
XIE ZHENHUA
SONG YILEI
FENG YUEFENG
LI HAIBO
WU HAOCHEN
YU YUN
ZHU CHUNLING

Assignees

无锡风电设计研究院有限公司

Dates

Publication Date: 20260512
Application Date: 20260407

Claims (10)

1. The multi-section hinged self-adaptive wind turbine blade tip winglet system is characterized by comprising at least four sections of winglet structures hinged end to end, wherein the hinged parts are driven to rotate by corresponding servo motors, and the first section winglet is arranged at the tail end of a fan blade; the two sections of winglets are bent and rotated on a plane perpendicular to the fan blade based on the hinge piece, and the other sections of winglets are bent and rotated on the plane perpendicular to the front-stage winglet structure or rotated along the length direction of the front-stage winglet structure respectively; The root of each section of winglet structure is stuck with a strain gauge for monitoring the strain caused by aerodynamic load, and the surface of each section of winglet structure is distributed with a temperature sensor for monitoring the temperature and an icing sensor for monitoring the icing thickness; a winglet control cabinet is arranged in the fan blade body and is electrically connected with each section of servo motor and sensing equipment, and gesture adjustment and heating deicing are carried out on each section of winglet structure according to data acquired by a fan main control system and the sensing equipment.
2. The multi-section hinged adaptive wind turbine blade tip winglet system of claim 1, wherein the first section winglet and the second section winglet are hinged to each other, and the other section winglet is hinged to a heatable spherical hinge support and is connected to the winglet structures at both ends by spherical hinge means.
3. The multi-section hinged adaptive wind turbine blade tip winglet system of claim 2, wherein dust protection devices distributed at the joints of the sections are arranged outside the winglet structure, and the dust protection devices comprise winglet transition sections and dust protection covers at the joints of the supports; the front end of the transition section is paved, poured and solidified according to the mould parameters of the blade tip of the blade, and the tail end of the transition section is connected with the front section winglet.
4. A multi-segment hinged adaptive wind turbine blade tip winglet system according to claim 3, wherein the transition segment is fiberglass cloth.
5. The multi-segment articulated adaptive wind turbine blade tip winglet system of claim 4, wherein an inertial measurement unit is also mounted on each winglet structure to measure the acceleration and angular velocity of the winglet segment.
6. The multi-segment hinged adaptive wind turbine blade tip winglet system of claim 1, wherein the wind turbine master control system obtains wind condition information and unit state parameters, wherein the wind condition information comprises wind speed, wind direction, wind shear and turbulence intensity information, and the unit state parameters comprise wind wheel rotation speed, generator power, pitch angle and blade root bending moment parameters.
7. The multi-section hinged self-adaptive wind turbine blade tip winglet system according to claim 1, wherein a dynamic decision module and a cooperative control module are arranged in the control cabinet, the dynamic decision module dynamically distributes the weight of a control target according to the working condition of a unit, and decision logic The expression is as follows: Wherein, the Representing the instantaneous electric power of the electric generator, Representing the root waving bending moment variance, Represents the total energy consumption for deicing, 、、 Respectively represent the corresponding weight coefficients of the two-dimensional model, The value is used for quantifying the comprehensive optimization target under the current working condition; the cooperative control module acquires weight coefficients, one part of the weight coefficients are obtained based on wind conditions and unit state analysis, and the other part of the weight coefficients are based on state data acquired by each section of winglet structure and state data of adjacent winglet structures.
8. The multi-segment hinged adaptive wind turbine blade tip winglet system of claim 7, wherein the dynamic decision module is internally provided with a fuzzy inference rule base, and the corresponding weight coefficients are aggregated and output according to the matching of the current input of the system and all rule preconditions.
9. The multi-segment articulated adaptive wind turbine winglet system of claim 8, wherein the cooperative control module comprises a control for a first Reward function for segment winglet structure The expression is as follows: Wherein, the In order to change the amount of the generated power, Is the first The variation of the root load of the winglet, Represent the first The electric energy consumed by the winglet in performing the deicing action, Representing the overall adjustment coefficient.
10. The multi-segment hinged adaptive wind turbine blade tip winglet system of claim 9, wherein the motion instructions calculated by the cooperative control module are issued to a blade controller to drive servo motors corresponding to each segment of winglet structure to move to a target angle, and/or to control a gradient heating film laid on the winglet surface.

Description

Multi-section hinged self-adaptive wind turbine blade tip winglet system Technical Field The embodiment of the application relates to the field of wind power, in particular to a multi-section hinged self-adaptive wind turbine blade tip winglet system. Background In the field of wind power generation, a tip winglet is a common device for improving the aerodynamic performance of a wind turbine, but the traditional technology has obvious limitations, and is difficult to meet the comprehensive requirements under complex actual working conditions; The conventional technologies mainly have the defects that firstly, some technologies, such as CN113007009a, have a specific airfoil profile, although the aerodynamic performance can be improved at the design point, the technology cannot adapt to complicated and variable wind conditions (such as wind shearing and turbulence) in actual operation, and the effect is very little or even negative under non-design working conditions. Secondly, as shown in CN102996367A, the control target is single by driving the integrally deflected winglet through the steering engine, the fine optimization capability of aerodynamic efficiency is lacked, and the problems of icing of the blade tip and the like cannot be solved. In addition, there are methods for optimizing geometric parameters in the design stage, such as CN119378116a, which belong to offline designs and cannot be adjusted in real time and adaptively during the operation of the fan. In sum, the traditional winglet has the disadvantages of poor working condition adaptability, incapability of solving the problem of tip trembling, no ice prevention and removal capability, single function and the like. Therefore, a new technology capable of overcoming the above-mentioned drawbacks is to be developed, and a core objective of the new technology is to provide a multifunctional integrated system capable of automatically adjusting the posture according to the real-time wind conditions, the blade states and the icing risk, and simultaneously realizing pneumatic efficiency improvement, load fluctuation suppression, flutter stability control and efficient active deicing. Disclosure of Invention The embodiment of the application provides a multi-section hinged self-adaptive wind turbine blade tip winglet system, which has the advantages of improving working condition adaptability, effectively inhibiting flutter and providing an active deicing function. The system comprises at least four sections of winglet structures hinged end to end, the hinged parts are driven to rotate by corresponding servo motors, and the first section of winglet is arranged at the tail end of a fan blade; the two sections of winglets are bent and rotated on a plane perpendicular to the fan blade based on the hinge piece, and the other sections of winglets are bent and rotated on the plane perpendicular to the front-stage winglet structure or rotated along the length direction of the front-stage winglet structure respectively; The root of each section of winglet structure is stuck with a strain gauge for monitoring the strain caused by aerodynamic load, and the surface of each section of winglet structure is distributed with a temperature sensor for monitoring the temperature and an icing sensor for monitoring the icing thickness; a winglet control cabinet is arranged in the fan blade body and is electrically connected with each section of servo motor and sensing equipment, and gesture adjustment and heating deicing are carried out on each section of winglet structure according to data acquired by a fan main control system and the sensing equipment. Specifically, a hinging mechanism is arranged between the first section of winglet and the second section of winglet, and the hinging parts of the other sections of winglets are provided with heatable spherical hinging supports and are connected with winglet structures at two ends through spherical hinging devices. Specifically, dust-proof devices distributed at the joints of all sections are arranged outside the winglet structure, wherein the dust-proof devices comprise winglet transition sections and dust-proof covers at the joints of all supports; the front end of the transition section is paved, poured and solidified according to the mould parameters of the blade tip of the blade, and the tail end of the transition section is connected with the front section winglet. Specifically, the transition section is glass fiber cloth. Specifically, an inertial measurement unit is also arranged on each section of winglet structure to measure the acceleration and angular velocity of the winglet section. The fan main control system obtains wind condition information and unit state parameters, wherein the wind condition information comprises wind speed, wind direction, wind shearing and turbulence intensity information, and the unit state parameters comprise wind wheel rotating speed, generator power, pitch angle and blade root be