Supercharge Your Innovation With Domain-Expert AI Agents!

Adaptive MPPT control strategy based on variable step size disturbance observation method

A technology of variable step size disturbance and control strategy, which is applied in the direction of control/regulation system, adjustment of electrical variables, instruments, etc., can solve the problems of reducing the efficiency of photovoltaic power generation, avoid misjudgment, improve energy conversion efficiency, and improve dynamic performance Effect

Inactive Publication Date: 2019-10-22
KUNMING UNIV OF SCI & TECH
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, the photovoltaic power generation system array also has its unavoidable shortcomings, that is, the external environment such as sunlight intensity and temperature will have a very large impact on its open circuit voltage and short circuit current, resulting in the constant change of the operating point of the photovoltaic power generation system , which reduces the photovoltaic power generation efficiency of the system to a certain extent

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
  • Adaptive MPPT control strategy based on variable step size disturbance observation method
  • Adaptive MPPT control strategy based on variable step size disturbance observation method
  • Adaptive MPPT control strategy based on variable step size disturbance observation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: as Figure 1-6 As shown, an adaptive MPPT control strategy based on the variable step size perturbation and observation method includes the following steps:

[0024] Step1. First detect the output voltage U(n) and output current I(n) of the photovoltaic array, and calculate P(n)=I(n)*U(n); further solve ΔU(n)=U(n)- U(n-1), ΔP(n)=P(n)-P(n-1);

[0025] Step2. Determine whether ΔU(n) is 0:

[0026] If ΔU(n) is 0, calculate U(n-1)=U(n), P(n-1)=P(n), V ref (n-1)=V ref (n);

[0027] If ΔU(n) is not 0, it is necessary to judge whether ΔU(n) is greater than 0 or less than 0: if ΔU(n) is greater than 0, perform Step 3; if ΔU(n) is less than 0, perform Step 4;

[0028] Step3. Further judge whether ΔP(n) is greater than 0:

[0029] If ΔP(n) is greater than 0, then calculate Then calculate U(n-1)=α in turn 1 U(n), P(n-1)=β 1 P(n), V ref (n-1)=γ 1 V ref (n), at this time the maximum power point is reached and remains stable;

[0030] If ΔP(n) is less than...

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 adaptive MPPT control strategy based on a variable step size disturbance observation method, and belongs to the field of photovoltaic power generation. The adaptive variablestep size factor is introduced based on the study of the traditional disturbance observation method and then the disturbance step size is changed adaptively so that the disturbance step size can be adjusted adaptively according to the distance between the working point of the photovoltaic power generation system and the maximum power point, he dynamic performance of the traditional disturbance observation method can be enhanced and the misjudgment of the system can be avoided. The simulation results show that the proposed MPPT method can track the maximum power point of the photovoltaic powergeneration system quickly and accurately and improve the energy conversion efficiency of the photovoltaic power generation system.

Description

technical field [0001] The invention relates to an adaptive MPPT control strategy based on a variable step size disturbance observation method, which belongs to the field of photovoltaic power generation. Background technique [0002] Among the many renewable energy sources, due to the wide distribution of solar energy, and with the development of modern technology, solar energy is undoubtedly an important technically exploitable resource at present. Today, solar photovoltaic power generation technology has made great progress, and the technical methods for developing and utilizing solar energy are mainly photovoltaic power generation technology and photovoltaic grid-connected and other related technologies. On the other hand, the photovoltaic power generation system array also has its unavoidable shortcomings, that is, the external environment such as sunlight intensity and temperature will have a very large impact on its open circuit voltage and short circuit current, resu...

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): G05F1/67
CPCG05F1/67Y02E10/56
Inventor 李晓磊刘志坚赵浩益罗灵琳宋琪
Owner KUNMING UNIV OF SCI & TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com