Method for controlling rotor-side converter of doubly fed induction generator (DFIG)

A wind turbine, doubly-fed induction technology, applied in motor generator control, electronic commutation motor control, generator control, etc., can solve problems such as difficulty in ADRC parameter debugging

Active Publication Date: 2014-04-23
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to aim at the drawbacks of the prior art, to provide a control method for the rotor-side converter of the doubly-fed induction wind power gen

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
  • Method for controlling rotor-side converter of doubly fed induction generator (DFIG)
  • Method for controlling rotor-side converter of doubly fed induction generator (DFIG)
  • Method for controlling rotor-side converter of doubly fed induction generator (DFIG)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with specific examples.

[0043] figure 1 It is the schematic structural diagram of the control system adopted in the present invention, and the specific implementation steps of the system are as follows:

[0044] (1) wind speed Output the given speed of DFIG rotor through the maximum wind energy capture module ;

[0045] (2) DFIG obtains the actual rotor speed through the speed measurement module ;

[0046] (3) At a given speed and actual speed As the input signal of the ADRC controller, the desired electromagnetic torque As the output signal of the ADRC controller, design a first-order ADRC controller;

[0047] (4) Randomly given a set of first-order ADRC controller parameters Initial value, optimize the parameters of the first-order ADRC controller through the SFLA algor...

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 method for controlling a rotor-side converter of a doubly fed induction generator (DFIG). A vector control system consists of a torque inner ring control module, a voltage space vector modulation module, a rotating speed measurement module, a maximum wind energy capturing module and a first-order auto disturbance rejection controller (ADRC); a given DFIG rotor rotating speed output by the maximum wind energy capturing module and an actual DFIG rotor rotating speed measured by the rotating speed measurement module are sent into the ADRC; given reactive power, given stator flux linkage and expected electromagnetic torque output by the ADRC are sent into the torque inner ring control module; the rotor-side converter is controlled through the voltage space vector modulation module according to a rotor voltage vector modulation signal output by the torque inner ring control module. According to the method, parameters of the ADRC are optimized on line, so that the problem of large difficulty in debugging of the parameters of the ADRC is solved, the control accuracy of the ADRC is improved, and the operation stability of a power generation system is further ensured.

Description

technical field [0001] The invention relates to a method for controlling a converter on the rotor side of a doubly-fed induction wind generator (DFIG), belonging to the technical field of power generation. Background technique [0002] In recent years, wind power generation has received great attention as a green and new energy generation method. With the rapid development of wind power generation and power electronics technology, variable speed constant frequency wind power technology has occupied the mainstream position. [0003] Doubly-fed induction generator (DFIG) has been extensively studied as the mainstream type of variable-speed constant-frequency wind turbine. The working principle of the DFIG system is as follows: First, the wind turbine absorbs wind energy to generate mechanical torque, and then drives the DFIG rotor to rotate through the gearbox, thereby transmitting the mechanical power to the generator. The DFIG rotor winding is connected to the excitation c...

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): H02P21/14H02P9/00
Inventor 刘英培栗然
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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