Synchronous suspension control method for horizontal-axis wind-power cabin

A technology of suspension control and synchronous controller, which is applied in the control of wind turbines, wind turbines, and engine control, etc., can solve the problems of large yaw power consumption of wind turbines, poor wind accuracy, and affecting the suspension stability of wind turbine cabins.

Active Publication Date: 2020-09-04
QUFU NORMAL UNIV
View PDF13 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The wind turbine yaw device is a key component of large and medium-sized horizontal axis wind power generation systems, which can realize the wind turbine blades facing the wind and increase the wind energy capture power. Large, high failure rate, poor wind accuracy and other problems, for this reason, the New Energy Research Institute of Qufu Normal University proposed a wind-driven magnetic levitation yaw system, which greatly reduces the power consumption of the cabin yaw
In response to the above problems, a two-point suspension sliding mode cooperative control of the wind turbine cabin was carried out, but the problem of suspension asynchronousness on both sides of the nacelle was not involved, and the asynchronous suspension directly caused the pitching of the nacelle; the invention patent 2019105276364 developed an independent adaptive suspension control strategy on both sides of the nacelle , while introducing adaptive cross-coupling to improve the suspension dynam

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Synchronous suspension control method for horizontal-axis wind-power cabin
  • Synchronous suspension control method for horizontal-axis wind-power cabin
  • Synchronous suspension control method for horizontal-axis wind-power cabin

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0063] Example 1: A variable air gap tracking simulation experiment, such as image 3 and Figure 4 As shown, the cabin starts to float at t=0s, and the initial suspension height is 10mm. Among them, the suspension height of the cabin from 0 to 75s is set as 13mm, and the suspension height at t=75s to 145s is 13.5mm, and t=145s to 200s suspension The height reference height is 13mm, and the performance is compared and analyzed with the traditional two-point independent control state feedback controller (hereinafter referred to as the traditional controller). The suspension performance is shown in Table 3, the starting time is 0.5s, and the reference change transition time is 1.0s , the overshoot is 0.025mm, and the steady-state error is 0.001mm, which is far superior to the suspension performance of the traditional controller, which verifies that the present invention has strong air gap tracking capability and steady-state performance.

[0064] Table 3 Comparison of variable ...

example 2

[0068] Example two unilateral interference simulation experiment, such as Figure 5 and Figure 6 As shown, the synchronization performance of the suspension control on both sides of the nacelle is analyzed. Set the reference value of the initial height of the nacelle to 13mm, apply a suspended weight of 22.5kg to the tail side of the system from 80s to 140s, and create a unilateral downforce of 225N for the system, simulating the lateral force generated by the external wind on the nacelle. Carry out the performance contrast of the state feedback controller (hereinafter referred to as the traditional controller) of the present invention and traditional two-point independent control respectively, as shown in table 4, the present invention respectively falls on the maximum height drop, suspension height drop return time, suspension height maximum. Appreciation and suspension height return time are obviously better than those without synchronous controller (1.48mm, 0.5s, 1.55mm,...

example 3

[0069] Examples of three-axis interference simulation experiments, such as Figure 7 and Figure 8 As shown, the reference value of the initial suspension height of the nacelle is set to 13mm, and a 40kg heavy object is applied to the suspended nacelle for 80s to 140s to create a 400N axial downward pressure on the system to simulate the downforce generated by the external wind on the nacelle. Carry out the performance comparison of the state feedback controller (hereinafter referred to as traditional controller) of the present invention and traditional two-point independent control respectively, contrast result is as shown in table 5, no matter be at the maximum drop value of suspension height, drop return time, suspension height maximum In terms of rising value and rising return time, the control effect of the present invention is obviously better than that of the traditional controller (0.42mm, 1.4s, 0.5mm, 1.4s).

[0070] Table 5 Axial interference force application perfo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a synchronous suspension control method for a horizontal-axis wind-power cabin. Suspension control of a traditional cabin is changed into independent control of the two sides by taking a suspension air gap as a target, and a control strategy integrating cabin suspension height and suspension synchronization is provided; and meanwhile, for the problem that the disturbance ofthe cabin suspension caused by external high-frequency or turbulent wind speed is fast time-varying interference, and the cabin suspension performance is extremely prone to damage, a sliding mode item and an adaptive interference compensation term are introduced to coordinately reconstruct the cabin suspension axial and pitch interference, and a sliding-mode adaptive axial and pitch interferenceobserver is proposed to achieve a steady suspension of the wind cabin with the weight up to 484 kg along with axial and synchronous controllers. According to the method, the suspension stability, fast-change interference suppression and two-side synchronous tracking performance of the cabin are greatly improved, the two-point suspension synchronization performance and the fast-change interferencesuppression capability of the cabin are effectively improved, and meanwhile the method has a strong guiding significance for multi-point suspension control of heavy suspended matters.

Description

technical field [0001] The invention relates to a synchronous suspension control method for a horizontal-axis wind power nacelle, in particular to an effective method for solving the large and stable wind power consumption caused by the yaw of a horizontal-axis MW-level wind machine, and belongs to the field of electromagnetic suspension control for wind power generation. Background technique [0002] The wind turbine yaw device is a key component of large and medium-sized horizontal axis wind power generation systems, which can realize the frontal windward of the wind turbine blades and increase the wind energy capture power. Large, high failure rate, poor wind accuracy and other problems, for this reason, Qufu Normal University New Energy Research Institute proposed a wind-driven maglev yaw system, which greatly reduces the power consumption of the cabin yaw. In response to the above problems, a two-point suspension sliding mode cooperative control of the wind turbine cabi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F03D7/04
CPCF03D7/046F03D7/045F03D7/0204F05B2270/602Y02E10/72
Inventor 褚晓广董同乐周洁孔英
Owner QUFU NORMAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap