Solar photovoltaic maximum power point tracking (MPPT) control system

A solar photovoltaic and control system technology, applied in control/regulation systems, photovoltaic power generation, light radiation generators, etc., can solve problems such as operating voltage swings, achieve output power, and avoid slow tracking speed

Inactive Publication Date: 2012-05-02
佛山市欧亚玛电器实业有限公司
View PDF3 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The traditional voltage perturbation method uses a fixed step size to perturb the output voltage of the photovoltaic array, and there is a problem that the operating voltage swings near the maximum operating voltage of the photovoltaic array.

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
  • Solar photovoltaic maximum power point tracking (MPPT) control system
  • Solar photovoltaic maximum power point tracking (MPPT) control system
  • Solar photovoltaic maximum power point tracking (MPPT) control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Such as figure 1 As shown, the present invention proposes a solar photovoltaic MPPT control system, which includes: a battery voltage sampling circuit 3 connected between the positive and negative poles of the solar photovoltaic cell 1 for sampling the output voltage of the solar photovoltaic cell 1; A diode D1 and a transistor Q1 at the anode of the solar photovoltaic cell 1, wherein the anode of the diode D1 is connected to the anode of the solar photovoltaic cell 1, the cathode of the diode D1 is connected to the drain of the transistor Q1, and the source and substrate of the transistor Q1 are connected to the current sampling circuit 5, The gate of the transistor Q1 is connected to the output terminal of the controller 4; the switch K1 is connected in series between the positive and negative poles of the solar photovoltaic cell 1 to supply power to the load 2; the load voltage sampling circuit 6 connected in parallel with the load 2 is used to monitor The voltage is...

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 solar photovoltaic maximum power point tracking (MPPT) control system, which comprises a battery voltage sampling circuit, a diode D1, a current sampling circuit and a load voltage sampling circuit, wherein the battery voltage sampling circuit is connected between a positive electrode and a negative electrode of a solar photovoltaic battery; an anode of the diode D1 is connected with the positive electrode of the solar photovoltaic battery, and a cathode of the diode D1 is connected with a drain of a transistor; the current sampling circuit is connected with a source of the transistor; the load voltage sampling circuit is connected with a load in parallel; output ends of the battery voltage sampling circuit, the current sampling circuit and the load voltage sampling circuit are respectively connected with a controller; the controller outputs a pulse width modulation (PWM) signal to a gate of the transistor; a disturbance current is generated by changing the duty ratio of the PWM signal; and the output of the solar photovoltaic battery is controlled by controlling the disturbance direction to reach a maximum power point. By adoption of the solar photovoltaic MPPT control system, the phenomena of low tracking speed and swinging around a maximum operating voltage in the conventional MPPT technology are avoided, and the output power of the solar photovoltaic battery is maximized.

Description

technical field [0001] The invention relates to a solar photovoltaic charging control technology, in particular to a solar photovoltaic MPPT control system. Background technique [0002] The development and application of new energy has become an inevitable trend in the development of the world today. Solar energy is a new energy source with great potential, and photovoltaic power generation is one of the main ways to utilize solar energy at present. Solar photovoltaic power generation is of great significance to alleviating the energy crisis and reducing environmental pollution, and has broad application prospects. [0003] Since the characteristics of the photovoltaic array are affected by the intensity of sunlight (or radiation intensity) and ambient temperature, the inverter must also meet the operating requirements of the photovoltaic array. The output voltage of the photovoltaic array must approach the output voltage of the maximum power point through the adjustment ...

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 Applications(China)
IPC IPC(8): H02N6/00H02M3/155
CPCY02E10/56
Inventor 谭宗享
Owner 佛山市欧亚玛电器实业有限公司
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