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

A mppt control of partially shadowed photovoltaic array based on random leapfrog global search algorithm

A photovoltaic array and global search technology, applied in photovoltaic power generation, control/regulation systems, instruments, etc.

Active Publication Date: 2021-07-13
XIANGTAN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention: to solve the problems of the existing control technology of MPPT photovoltaic arrays under partial shadows, to propose a local shadowed photovoltaic array based on random leapfrog global search algorithm with few adjustment parameters, fast search speed, strong and stable optimization ability Multi-peak MPPT control method

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
  • A mppt control of partially shadowed photovoltaic array based on random leapfrog global search algorithm
  • A mppt control of partially shadowed photovoltaic array based on random leapfrog global search algorithm
  • A mppt control of partially shadowed photovoltaic array based on random leapfrog global search algorithm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] In order to clarify the features and advantages of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings.

[0041] Such as figure 1 As shown, the present invention realizes the multi-peak MPPT control of the photovoltaic array under partial shadow based on the random leapfrog global search algorithm. At this time, the output of the photovoltaic array presents a multi-peak P-I Characteristic curve, the present invention uses the random leapfrog global search algorithm as the MPPT control module, and the light intensity and ambient temperature information of the photovoltaic array are imported I- SFLA-MPPT module, optimized for after The maximum point power of the photovoltaic array is compared with the real-time measured power of the photovoltaic array to obtain the deviation value, and the real-time maximum power point tracking of the photovoltaic array is realized by combining the fuzzy PI with...

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 local shadow photovoltaic array multi-peak Maximum Power Point Tracking (MPPT) control method based on a random leapfrog global search algorithm. The output current of the photovoltaic array is used as the particle of the algorithm, and the power of the photovoltaic array is As the fitness function of the algorithm, the global maximum power point of the photovoltaic array can be found efficiently and accurately through the new fast and global search technology of the random leapfrog global search algorithm, and then the maximum power can be achieved by controlling the Boost circuit through the PWM duty cycle Points to track. This algorithm can solve the problem that the MPPT control of photovoltaic arrays with multi-peak output characteristics under local shadows is easy to fall into the local maximum power point. It can accurately find the global maximum power point, and has strong optimization ability, high search accuracy, and easy programming.

Description

technical field [0001] The invention relates to a multi-peak MPPT control method for a partially shadowed photovoltaic array, in particular to a multi-peak MPPT control method for a partially shadowed photovoltaic array based on a random leapfrog global search algorithm. Background technique [0002] With the popularization of solar power generation, the operating environment of photovoltaic arrays has become more and more complex. Partial shading causes multiple extreme points in the output characteristic curve of photovoltaic arrays, which affects the output efficiency of photovoltaic arrays, and even damages them due to hot spots. PV. In order to make the photovoltaic system work at the maximum power point and improve system efficiency, it is necessary to use an effective multi-peak maximum power point tracking algorithm. [0003] Traditional maximum power point tracking algorithms (such as fixed voltage method, perturbation and observation method and incremental conduct...

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): G05F1/67
CPCG05F1/67Y02E10/56
Inventor 易灵芝周东访刘罗黄其森
Owner XIANGTAN 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