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

a photovoltaic system

A photovoltaic system and photovoltaic cell technology, applied in the electronic field, can solve problems such as increasing equipment costs

Active Publication Date: 2018-09-07
HUAWEI DIGITAL POWER TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this technical solution, each photovoltaic cell string needs to be connected with a current sensor, resulting in increased equipment cost

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 photovoltaic system
  • a photovoltaic system
  • a photovoltaic system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0021] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a photovoltaic system proposed by an embodiment of the present invention. Such as figure 1 As shown, the photovoltaic system includes a plurality of photovoltaic cell strings, converters, controllers and busbars. The plurality of photovoltaic cell strings includes at least one string group that is connected to a current sensor after two or three photovoltaic cell strin...

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

An embodiment of the present invention discloses a photovoltaic system, comprising: a plurality of photovoltaic cell strings, a converter, a controller, and a bus bar, wherein the plurality of photovoltaic cell strings includes at least one of two or three photovoltaic cells in series and parallel connected to a current A string group of sensors, the at least one string group is connected to the converter through a bus after being connected in parallel, the controller is respectively connected with the current sensor in each string group in the at least one string group, and the current sensor is used to detect each string The total current of the group, and report to the controller whether there is a reverse current in each string, the controller is used to adjust the output to the converter when there is a reverse current in the target string in at least one string reported by the current sensor. The converter is used to reduce the system voltage between the bus bars to reduce the reverse current in the target string according to the adjusted control signal, which can not only provide photovoltaic cell protection, but also reduce equipment costs.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a photovoltaic system. Background technique [0002] In the application scenario of photovoltaic inverters, photovoltaic cells are connected in series and parallel to provide output voltage and output current to the load. However, if one of the photovoltaic cell strings is short-circuited, it may cause other photovoltaic cell strings to pour reverse current into the short-circuited photovoltaic cell string. If the reverse current is greater than the short-circuit current of the photovoltaic cell, it may cause the faulty photovoltaic cell string to In severe cases, it may even cause a fire. Therefore, it is necessary to add corresponding protection measures for photovoltaic cell strings to avoid major accidents. [0003] In the existing technical scheme, each photovoltaic cell string is connected with a current sensor, and each current sensor detects the current of each photo...

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): H02S10/00H02S40/30
CPCH02S50/00H01L31/02021H02J2300/24H02J3/381Y02E10/56H02J3/46Y02E10/50H02M1/0009H02M1/084H02M3/04H02M7/44
Inventor 石磊叶飞刘云峰
Owner HUAWEI DIGITAL POWER TECH CO LTD
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