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

Doubly-fed fan fault ride-through method and system based on explicit model predictive control

A model predictive control and doubly-fed fan technology, applied in the control system, control generator, generator control circuit, etc., can solve the problem of affecting the effect of demagnetization, the large demagnetization linkage current value, and the inability to fully utilize the capacity of the rotor converter and other problems, to achieve the effect of improving online computing speed and simple and reliable structure

Active Publication Date: 2019-12-31
SHANDONG UNIV
View PDF4 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, according to the inventor’s understanding, the traditional demagnetization control current is obtained by multiplying the measured negative sequence and free flux linkage by a fixed proportional coefficient, and the demagnetization current value obtained in this way may be very large, which will saturate the rotor converter and affect demagnetization. The magnetic effect cannot give full play to the capacity of the rotor converter, and the demagnetization current cannot be flexibly adjusted according to the fault situation

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
  • Doubly-fed fan fault ride-through method and system based on explicit model predictive control
  • Doubly-fed fan fault ride-through method and system based on explicit model predictive control
  • Doubly-fed fan fault ride-through method and system based on explicit model predictive control

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.

[0045] It should be noted that the following detailed description is exemplary and intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used in this embodiment have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

[0046] It should be noted that the terminology used herein is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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 doubly-fed fan fault ride-through method and system based on explicit model predictive control. The defect of fixed coefficients of traditional demagnetization control is overcome; demagnetization current can be flexibly adjusted according to a fault condition to give full play to the capacity of a rotor side converter; on the basis of the traditional demagnetization control, redundant measurement links are not needed, and the method and the system can be suitable for various fault types and fault depths, suitable for online optimization control, and can meet the transient response requirements of the doubly-fed fan in the power grid fault period.

Description

technical field [0001] The disclosure belongs to the technical field of wind power control, and relates to a fault ride-through method and system for double-fed wind turbines based on explicit model predictive control. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Doubly Fed Induction Generator (DFIG) is widely used in modern wind power generation systems because of its many advantages, such as flexible active and reactive power control capabilities, mature technology, low cost and high reliability. DFIG consists of a back-to-back converter and a wound-rotor induction generator whose stator windings are directly connected to the common connection point of the grid, so are very sensitive to grid voltage fluctuations. With the increasing penetration of wind power year by year, the dynamic behavior between wind turbines and grid has becom...

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): H02J3/38H02P9/00H02P9/12H02P101/15
CPCH02P9/007H02P9/123H02P2101/15
Inventor 罗嘉赵浩然高术宁韩明哲
Owner SHANDONG UNIV
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