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

Improved MPPT (maximum power point tracking) control method based on initial rotation speed adjustment

A technology of maximum power point and tracking control, which is applied in the control of wind turbines, wind turbines, engines, etc., can solve problems such as difficult to find quantitative relationships, and achieve the effect of less information, simple and easy algorithm, and light calculation burden

Inactive Publication Date: 2012-05-02
NANJING UNIV OF SCI & TECH
View PDF5 Cites 36 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the key problem faced by this idea is that the optimal state of torque adjustment is closely related to wind speed conditions, but it is difficult to find a direct quantitative relationship between them

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
  • Improved MPPT (maximum power point tracking) control method based on initial rotation speed adjustment
  • Improved MPPT (maximum power point tracking) control method based on initial rotation speed adjustment
  • Improved MPPT (maximum power point tracking) control method based on initial rotation speed adjustment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The present invention proposes for the first time an improvement idea of ​​shortening the tracking process of the maximum power point by shrinking the tracking interval of the fan speed, thereby improving the wind energy capture efficiency. And on this basis, an improved maximum power point tracking control method based on initial speed adjustment is designed. Compared with the improved method based on electromagnetic torque adjustment, it not only further improves the wind energy capture efficiency, but also the algorithm is simple and easy to be implemented and not easily affected by the change of wind speed conditions.

[0028] 1 Improvement ideas for shrinking the tracking interval

[0029] It can be seen from the object motion equation that in addition to increasing the absolute value of the acceleration, reducing the tracking distance can also shorten the tracking process of the maximum power point, thereby improving the tracking effect and increasing the wind ene...

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 an improved MPPT (maximum power point tracking) control method based on initial rotation speed adjustment. The design principle of the method is as follows: the wind speed average value exactly reflects the wind speed and wind energy concentrated distribution interval, therefore the optimal rotation speed tracking interval and the average wind speed have a direct relation in quantity and further can be easily pre-estimated, and iteration search is not needed. Compared with an improved torque adjustment method, the improved method provided by the invention not only can be used for improving the wind energy capture rate, but also is simple and practicable. Through the simulative calculation and comparative analysis of a simulative wind speed sequence, the effectiveness and advancement of the method are verified.

Description

technical field [0001] The invention belongs to the field of wind power generation, in particular to an improved maximum power point tracking control method based on initial rotational speed adjustment. Background technique [0002] In order to improve the wind energy capture efficiency below the rated wind speed range, the variable speed constant frequency wind turbine generally adopts the Maximum Power Point Tracking (MPPT) control strategy. Its control goal is to adjust the speed of the wind rotor to always run at the optimal speed, that is, the best tip speed ratio, as the wind speed changes, so as to capture and transform wind energy with maximum efficiency. Its realization methods mainly include: power curve method (also known as power signal feedback method or torque curve method), blade tip speed ratio method and hill climbing method. The most widely used method is the power curve method [0003] The traditional MPPT control, especially the power curve method, is m...

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): F03D7/00
CPCY02E10/723Y02E10/72
Inventor 殷明慧张小莲邹云叶星蔡晨晓
Owner NANJING 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