Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hydraulic aeroelastic pitch system based on fully distributed optical fiber sensing differential pressure feedback and its control method and calculation method of control parameters

A fully distributed, variable pitch system technology, applied in the control field of wind turbines, can solve problems such as flutter fracture failure, achieve the effects of reducing external loads, simple control, and small environmental impact

Inactive Publication Date: 2019-09-24
SHANDONG UNIV OF SCI & TECH
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wind turbine blades may fail due to flutter fracture under nonlinear aerodynamic drive

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
  • Hydraulic aeroelastic pitch system based on fully distributed optical fiber sensing differential pressure feedback and its control method and calculation method of control parameters
  • Hydraulic aeroelastic pitch system based on fully distributed optical fiber sensing differential pressure feedback and its control method and calculation method of control parameters
  • Hydraulic aeroelastic pitch system based on fully distributed optical fiber sensing differential pressure feedback and its control method and calculation method of control parameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0043] refer to figure 1 The hydraulic aeroelastic pitch system based on fully distributed optical fiber sensing differential pressure feedback in the embodiment of the present invention includes: a wind turbine, a signal acquisition system, a pitch control system and a hydraulic execution system; When the power acts, a large waving deformation will be generated in the dangerous section area, and the deformation is converted into an electrical signal, which is transmitted to the pitch control system by the signal acquisition system. The propeller drive law is transmitted to the hydraulic actuator system, and the hydraulic actuator system drives the blades to change ...

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 provides a hydraulic aeroelastic variable pitch system based on fully-distributed type optical fiber sensing differential pressure feedback and a control method. The wind turbine blade aeroelastic stability is improved, and accordingly the fluttering fracture failure phenomenon possibly happening is restrained. The hydraulic aeroelastic variable pitch system comprises a wind turbine,a signal obtaining system, a variable pitch control system and a hydraulic executing system. An optical fiber differential pressure sensor is arranged in each wind turbine blade for measuring the displacement differential pressure of the wind turbine blade. The signal obtaining system is arranged in a hub and used for receiving displacement differential pressure signals and conducting encoding treatment. The variable pitch control system and the hydraulic executing system are arranged in a cabin, the variable pitch control system comprises a PAC variable pitch controller used for judging theprocessed signals, RBF neural network control is conducted according to a judgment result, a corresponding control result instruction is sent to the hydraulic executing system, and the hydraulic executing system conducts variable pitch control on the wind turbine blades.

Description

technical field [0001] The present invention relates to a pitch change system and a control method, in particular to a hydraulic aeroelastic pitch change system based on a fully distributed optical fiber sensing differential pressure feedback and a method for calculating control parameters of the control method, belonging to the technical field of wind power generator control . Background technique [0002] In recent years, new energy technologies for wind power generation have been greatly developed, especially wind energy capture machinery. Driven by nonlinear aerodynamic force, wind turbine blades may fail due to flutter fracture. For medium-sized wind turbine blades, the influence of aerodynamic force can be attenuated by their own timely pitch movement. General conventional pitching motions tend to focus on the improvement of power and energy acquisition. The pitching motion described in this design is based on the combined effect of dangerous section and flutter wind...

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
Patent Type & Authority Patents(China)
IPC IPC(8): F03D7/02F03D7/04
CPCF03D7/0224F03D7/0296F03D7/04F03D7/044F03D7/045F03D7/046F05B2270/604Y02E10/72
Inventor 刘廷瑞常林易成宏
Owner SHANDONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com