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

Photovoltaic grid-connected inverter, control method thereof and photovoltaic hydrogen production system

A control method and inverter technology, applied in photovoltaic power generation, AC network circuits, AC network load balancing, etc., can solve the problems that photovoltaic grid-connected inverters and hydrogen production devices cannot be directly adapted and connected, and achieve friendly maintenance Type and saving type, low system cost and high operating efficiency

Pending Publication Date: 2022-03-01
爱士惟科技股份有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, an object of the present invention is to provide a control method for a photovoltaic grid-connected inverter, which solves the problem that the photovoltaic grid-connected inverter and the hydrogen production device cannot be directly adapted and connected, and at the same time can ensure the power grid friendly saving

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 grid-connected inverter, control method thereof and photovoltaic hydrogen production system
  • Photovoltaic grid-connected inverter, control method thereof and photovoltaic hydrogen production system
  • Photovoltaic grid-connected inverter, control method thereof and photovoltaic hydrogen production system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] refer to figure 1As shown, the photovoltaic hydrogen production system of this embodiment includes a photovoltaic grid-connected inverter 10 and an electrolytic hydrogen production device 8 . The photovoltaic grid-connected inverter 10 includes a first DC conversion unit 2, a DC-LINK capacitor bank 3, a second DC conversion unit 6, a DC-AC conversion unit 4, a relay unit 5 and a control unit 7, and these units are all set in Inside the casing of the photovoltaic grid-connected inverter 10 . The housing is provided with a DC input terminal, a DC output terminal and an AC connection terminal, wherein the DC input terminal is used to connect to the photovoltaic panel 1 , the DC output terminal is connected to the electrolytic hydrogen production device 8 , and the AC connection terminal is used to connect to the grid 9 . The input end of the first DC conversion unit 2 is electrically connected to the AC input terminal, and is used for DC step-up / step-down of the electric ...

Embodiment 2

[0062] The photovoltaic grid-connected inverter 10 of this embodiment is basically the same as that of Embodiment 1, the only difference being that the photovoltaic grid-connected inverter system of this embodiment further includes a battery 21 and a hydrogen storage device 22 . refer to figure 2 As mentioned above, the first DC conversion unit 2 is electrically connected to the battery 21 , and the battery 21 is a rechargeable battery 21 . The hydrogen storage device 22 is connected to the electrolytic hydrogen production device 8 through a hydrogen pipeline.

[0063] The electric energy output by the photovoltaic panel 1 can supply power to the DC-LINK capacitor group 3 and the battery 21 through the first DC conversion unit 2, and the DC-LINK capacitor group 3 can convert direct current into alternating current through the DC-AC conversion unit 4 and pass the relay unit 5 is connected to the grid 9 so as to feed power to the grid 9; on the contrary, the power of the grid ...

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 grid-connected inverter, a control method thereof and a photovoltaic hydrogen production system. The photovoltaic grid-connected inverter comprises a DC input terminal used for connecting a photovoltaic panel; the input end of the first direct current conversion unit is electrically connected with the direct current input terminal; the input end of the DC-LINK capacitor bank is electrically connected with the output end of the first DC conversion unit; the input end of the second direct current conversion unit is electrically connected with the first output end of the DC-LINK capacitor bank; the direct-current output terminal is used for being electrically connected with an electrolytic hydrogen production device to supply power, and the direct-current output terminal is electrically connected with the output end of the second direct-current conversion unit; the alternating current connection terminal is used for connecting a power grid; and one end of the DC-AC conversion unit is electrically connected with the second output end of the DC-LINK capacitor bank, and the other end of the DC-AC conversion unit is electrically connected with the AC connection terminal through the relay unit. The problem that the photovoltaic grid-connected inverter and the hydrogen production device cannot be directly connected in an adaptive mode is solved, and meanwhile friendly and saving of a power grid can be guaranteed.

Description

technical field [0001] The invention belongs to the field of photovoltaic inverters, and relates to a control method for a photovoltaic grid-connected inverter, a photovoltaic grid-connected inverter and a photovoltaic hydrogen production system. Background technique [0002] Photovoltaic inverter, as the core device that converts the direct current provided by solar modules (Solar module) into alternating current for civil or industrial use, plays an increasingly important role in the field of new energy. In recent years, with the planning of carbon peaking and carbon neutrality, green energy has ushered in explosive development, especially the advancement of technologies such as hydrogen energy vehicles and fuel cells. Hydrogen energy has become another important demand energy after wind energy. . Photovoltaic hydrogen production can effectively avoid abandoning wind and light, and maximize the real green energy. Therefore, how to efficiently and intelligently combine pho...

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): H02J3/38H02J3/32C25B9/65C25B1/04
CPCH02J3/381H02J3/32C25B9/65C25B1/04H02J2300/24Y02E10/56Y02E60/36Y02E70/30Y02P80/20
Inventor 张勇李宁卢盈吴生闻
Owner 爱士惟科技股份有限公司
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