Lightning protection device and inverter

A lightning protection and inverter technology, which is applied in the direction of emergency protection circuit devices, circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve the problem of large equivalent impedance, high cost, and voltage division advanced questions

Pending Publication Date: 2021-03-09
SUNGROW POWER SUPPLY CO LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, lightning protection devices usually use a combination of metal-oxide varistor (MOV) and gas discharge tube (GAS). Since the equivalent impedance of MOV is about tens of megohms, while the The equivalent impedance is very large, usually up to gigaohms. It can be seen that the impedance of the gas discharge tube is much larger than that of the MOV. According to the larger the impedance in the

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
  • Lightning protection device and inverter
  • Lightning protection device and inverter
  • Lightning protection device and inverter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] See figure 1 , shows a schematic structural view of a lightning protection device provided by the present invention, as figure 1 As shown, the lightning protection device includes a first overvoltage protector (that is, SPD1), a second overvoltage protector (that is, SPD2) and a voltage regulating circuit.

[0038] Wherein, SPD1 and ...

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 provides a lightning protection device and an inverter, the lightning protection device comprises a first overvoltage protector and a second overvoltage protector which are connected inseries between a protected line and the ground, the first overvoltage protector is connected with the protected line, and the second overvoltage protector is grounded. Moreover, the lightning protection device also comprises a voltage regulation circuit, and the voltage regulation circuit at least comprises a first voltage division circuit which is connected in parallel with the two ends of the second overvoltage protector. When the lightning protection device is in a normal working condition, the first voltage division circuit is used for adjusting the voltage drop of the first overvoltage protector or the second overvoltage protector. By adjusting the impedance value of the first voltage division circuit, the voltage drop on the second overvoltage protector (or the first overvoltage protector) is reduced, so that the voltage withstanding performance requirement of the second overvoltage protector (or the first overvoltage protector) is reduced, and the hardware cost of the lightningprotection device is further reduced.

Description

technical field [0001] The invention belongs to the technical field of lightning protection, and in particular relates to a lightning protection device and an inverter. Background technique [0002] At present, lightning protection devices usually use a combination of metal-oxide varistor (MOV) and gas discharge tube (GAS). Since the equivalent impedance of MOV is about tens of megohms, while the The equivalent impedance is very large, usually up to gigaohms. It can be seen that the impedance of the gas discharge tube is much larger than that of the MOV. According to the larger the impedance in the series circuit, the higher the partial voltage is. Under normal circumstances, most of the voltage of the protected line It is borne by a gas discharge tube, especially in a high-voltage system. Therefore, it is necessary to select a gas discharge tube with a high withstand voltage. However, there are few gas discharge tubes with a high withstand voltage on the market at present, ...

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): H02H9/04H02M1/32H02H9/06
CPCH02H9/04H02M1/32H02H9/06
Inventor 邢军汪昌友
Owner SUNGROW POWER SUPPLY CO LTD
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