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

Combined Rogowski coil current sensor capable of reducing stray electric field interference

A technology of current sensor and Rogowski coil, applied in voltage/current isolation, measuring current/voltage, instruments, etc., can solve problems such as large measurement error, and achieve the effect of reducing influence and interference signal

Pending Publication Date: 2022-08-05
山东元星电子有限公司 +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the measurement current is small, the interference signal current will cover the measurement current, resulting in a large measurement error

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
  • Combined Rogowski coil current sensor capable of reducing stray electric field interference
  • Combined Rogowski coil current sensor capable of reducing stray electric field interference
  • Combined Rogowski coil current sensor capable of reducing stray electric field interference

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] In order to make the technical solutions and beneficial effects of the present invention clearer, the embodiments of the present invention are further explained in detail below.

[0016] The present invention includes two Rogowski coils, and the two Rogowski coils are arranged next to each other, or they form a whole. The two Rogowski coils are respectively a first Rogowski coil and a second Rogowski coil. In order to achieve an immediate setting such as figure 1 As shown, the first Rogowski coil and the second Rogowski coil are arranged in an overlapping manner. Alternatively, two Rogowski coils are stacked on top of each other for a tight fit. Or, two Rogowski coils are arranged on the same plane, one is outside and the other is inside, and they are closely connected. Or, two Rogowski coils form a twisted pair, which is better tightly integrated into one. The two Rogowski coils are wound in opposite directions. By superimposing the output signals, the interference...

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 the field of current transformers, in particular to a current transformer which comprises a first Rogowski coil and a second Rogowski coil, the coil winding directions of the first Rogowski coil and the second Rogowski coil are opposite, and the output of the first Rogowski coil and the output of the second Rogowski coil are subtracted to serve as sampling signals. By means of the structure, the influence of interference signals can be reduced, meanwhile, the effect of amplifying tiny detection signals is achieved, and detection of weak current signals is better facilitated.

Description

technical field [0001] The invention relates to the field of current transformers, in particular to a combined Rogowski coil current sensor capable of reducing stray electric field interference. Background technique [0002] Rogowski coils measure current through a magnetic field. The alternating magnetic field is always connected with the alternating electric field. Compared with the electromagnetic current transformer, it is more susceptible to the interference of the external alternating electromagnetic field. The sampling current output by the Rogowski coil not only includes the measurement current flowing in the tested wire, but also includes the interference signal current generated by the surrounding electromagnetic field. When the measurement current is small, the interference signal current will cover the measurement current, resulting in a larger measurement error. Therefore, it is an urgent requirement to design a combined Rogowski coil current sensor that can re...

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): G01R15/18G01R19/00
CPCG01R15/181G01R19/0092
Inventor 王永平李安虎柴丽丽
Owner 山东元星电子有限公司
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