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

Grid-connected and off-grid hybrid solar energy photovoltaic generating system

A solar photovoltaic and hybrid power generation technology, applied in photovoltaic power generation, photovoltaic power stations, optical radiation generators, etc., can solve the problem that grid-connected inverters are not allowed, the power of solar cell arrays is not utilized, and the solar cell arrays are not It can achieve good application prospects, improve the annual power generation time of the system, and increase the annual power generation effect.

Inactive Publication Date: 2011-09-14
WUHAN TEXTILE UNIV
View PDF6 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007]However, for the grid-connected power generation system, when the distribution network fails, in order to prevent the island effect, the grid-connected inverter will not be allowed to work, and the solar cells will The convertible electric energy of the array is not used; and for the off-grid power generation system, when the battery pack is fully charged and there is no electrical load, the solar cell array will not be able to generate electricity because there is no output load. The convertible power of the array is not utilized

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
  • Grid-connected and off-grid hybrid solar energy photovoltaic generating system
  • Grid-connected and off-grid hybrid solar energy photovoltaic generating system
  • Grid-connected and off-grid hybrid solar energy photovoltaic generating system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] 1. Circuit topology of solar photovoltaic grid-connected and off-grid hybrid power generation system

[0019] exist figure 1 In , the composition and connection of solar photovoltaic grid-connected and off-grid hybrid power generation systems are described. The output terminal of the solar cell square array is connected to the input terminal of the controller, and the controller has three outputs, the first output of which is connected to a DC emergency load (such as power LED lighting load, mobile electrical charger, etc.); The output is connected to the battery pack; its third output is connected to the input of the grid-connected inverter, and the output of the grid-connected inverter is connected to the public distribution network.

[0020] exist figure 2 In , the composition and internal connection of the controller, a key component in the solar photovoltaic grid-connected and off-grid hybrid power generation system, are described.

[0021] The composition of t...

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 relates to a solar energy photovoltaic power generation application, particularly a hybrid photovoltaic generating system which mainly adopts grid-connected power generation but also can carry out off-grid power generation. The generating system comprises a controller, a solar cell array, a storage battery, a direct current emergency load, a grid-connected inverter and a public distribution network. Most direct current electric energy output by the solar cell array is converted into alternating current electric energy through a grid-connected inverter and then sent to the public distribution network; and small part of direct current electric energy is supplied to the direct current emergency load and the storage battery through a direct current buck converter and a low-voltage direct current bus. When the voltage of the low-voltage direct current bus is beyond the normal range, the storage battery can supply energy to the direct current emergency load through a charge-discharge controller. The grid-connected and off-grid hybrid solar energy photovoltaic generating system mainly adopts grid-connected power generation but also can carry out off-grid power generation; even when the public distribution network fails and grid-connected power generation is not available, the system also can supply energy to the direct current emergency load, thus improving the system efficiency and the annual generating time, and having a good application prospect.

Description

technical field [0001] The invention relates to an application of solar photovoltaic power generation, in particular to a hybrid photovoltaic power generation system capable of mainly generating electricity connected to the grid and simultaneously generating electricity off the grid. Background technique [0002] Solar photovoltaic power generation can replace and reduce the use of limited and non-renewable coal, oil, natural gas and other primary fossil energy and the secondary energy converted from it. Promoting the application of solar photovoltaic power generation is of great significance to reducing the consumption of fossil energy and optimizing the energy structure. [0003] Solar photovoltaic power generation does not emit pollutants that damage the atmosphere and the ecological environment, and is a clean and green energy that is in harmony with the ecological environment on which human beings depend. Promoting the application of solar photovoltaic power generation...

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): H02N6/00H02J7/35H02J3/38H02S10/00H02S10/20H02S40/30H02S40/32
CPCY02E10/58Y02E10/566Y02E10/563Y02E10/56Y02E70/30
Inventor 薛勇吴玉蓉石烺峰肖雷唐俊峰
Owner WUHAN TEXTILE 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