Photovoltaic array multi-peak maximum power cluster searching optimization tracking method

A photovoltaic array and maximum power technology, applied in the direction of photovoltaic modules, photovoltaic power generation, photovoltaic module support structures, etc., can solve the problems of increased hardware equipment costs, complex implementation process, easy to fall into local extreme points, etc., to speed up the search speed , Simplify the search strategy, improve the effect of accuracy and stability

Active Publication Date: 2017-03-22
XIANGTAN UNIV
View PDF6 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional MPPT algorithms (such as hill-climbing method, perturbation and observation method, etc.) have a good tracking control effect on single-peak power, but in the case of partial shading, the power-voltage (P-U) curve of the photovoltaic array presents multiple power extremes The multi-peak problem of points makes the conventional MPPT algorithm easy to fall into local extreme points
A...

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
  • Photovoltaic array multi-peak maximum power cluster searching optimization tracking method
  • Photovoltaic array multi-peak maximum power cluster searching optimization tracking method
  • Photovoltaic array multi-peak maximum power cluster searching optimization tracking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0070] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0071] Such as figure 1 , figure 2 As shown, a photovoltaic array multi-peak maximum power group search optimization tracking method, including the following steps:

[0072] Step 1: Measure the output voltage and output current of the photovoltaic array, and obtain the peak number n according to the photovoltaic array components and shadow conditions;

[0073] image 3 The circuit shown is the circuit structure diagram based on the Boost maximum power tracking system. The parameters used in the circuit are: R1=0.02Ω, L1=0.02H, C1=2000μF, C2=3500μF, and use R2=20Ω resistance as the load connection into the circuit.

[0074] Step 2: Call the IGSO algorithm to track the voltage corresponding to the maximum photovoltaic power.

[0075] Step 2 specifically includes:

[0076] 2-1: Establish photovoltaic maximum power tracking model: According to the ch...

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 photovoltaic array multi-peak maximum power cluster searching optimization tracking method, comprising steps of measuring output voltage and output current of a photovoltaic array; according to photovoltaic array component and shadow condition, acquiring peak value number n; using IGSO algorithm and tracking the voltage corresponding to the maximum photovoltaic power; making an impulse generator generate PWM signal according to voltage and then making a photovoltaic array run at an updated array voltage point as the maximum output power of photovoltaic array; when the power change rate is more than 0.015, restarting a searching process. According to the tracking method of photovoltaic array MPPT problem based on IGSO, number of member producer in the IGSO algorithm is arranged according to the array structure, thus the tracking efficiency is improved; according to the rule relationship between the maximum power point and the voltage, the initial position and the searching strategy are improved, and rover is omitted, and thereby avoiding partial extreme point and improving the algorithmic precision and stability.

Description

technical field [0001] The invention relates to the field of photovoltaic power generation, in particular to a multi-peak maximum power group search optimization tracking method for photovoltaic arrays. Background technique [0002] Photovoltaic power generation has the characteristics of huge reserves, inexhaustible supply, safety and convenience, so it has become an emerging industry that is generally concerned and focused on development by countries all over the world. However, in the development of photovoltaic power generation, there are still many problems that need to be solved urgently, including the selection of an appropriate multi-peak maximum power tracking (Maximum Power Point Tracking, MPPT) algorithm for photovoltaic arrays to improve the efficiency of photovoltaic systems. [0003] The maximum power point tracking of the photovoltaic array means that when the external environmental conditions such as the intensity of sunlight and the external temperature chan...

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): G05F1/67H02S20/32
CPCG05F1/67H02S20/32Y02E10/56
Inventor 李利娟巩政唐文冰吴军刘梦妮谭貌
Owner XIANGTAN UNIV
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