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

270V DC ground power supply voltage ripple protection circuit

A technology for voltage pulsation and circuit protection, applied to electrical components, output power conversion devices, etc., can solve the problem that oscilloscope measurement cannot meet the needs of the use scene, and achieve the effect of simple and reliable circuit

Pending Publication Date: 2022-02-11
天津航空机电有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aircraft ground power supply quality monitoring equipment needs to be simple and reliable, and oscilloscope measurement cannot meet the needs of use scenarios

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
  • 270V DC ground power supply voltage ripple protection circuit
  • 270V DC ground power supply voltage ripple protection circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The connection structure of the present invention will be described in detail below with reference to the drawings and embodiments.

[0022] The present invention collects the 270V ground power supply voltage, isolates the pulsating voltage from the 270V voltage through the pulsating voltage detection circuit, and compares the setting value with the comparison circuit after conditioning. When the pulsating voltage amplitude is greater than the setting value, the comparison circuit outputs The protection signal enters the subsequent stage circuit after passing through the isolation circuit.

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] figure 1 It is the schematic diagram of the pulsation voltage detection circuit of the 270V DC ground power supply voltage pulsation protection circuit, figure 2 Schematic diagram of the comparison circuit and isolation circuit for the 27...

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 270V DC ground power supply voltage ripple protection circuit. The circuit can detect a pulsating voltage of a 270V direct-current power supply, and when the pulsating voltage exceeds a set value, the circuit outputs a protection control signal. The circuit is composed of a pulsating voltage detection circuit, a comparison circuit and an isolation circuit, wherein the pulsating voltage detection circuit realizes detection by adopting a resistance-capacitance method. The circuit provided by the invention has lightning protection design and out-of-tolerance protection design, can ensure that the circuit meets the three-level lightning protection requirement, and can realize protection of circuit components when the pulsating voltage is too large.

Description

technical field [0001] The invention relates to the fields of aircraft ground power supply quality monitoring and pulse voltage detection. Specifically relates to a 270V DC ground power supply voltage pulsation protection circuit. Background technique [0002] Ripple voltage, also known as ripple voltage, is produced when AC voltage is rectified into DC. The pulsation of the rectified DC voltage is proportional to the primary power of the load current, and inversely proportional to the frequency of the power supply and the capacitance of the capacitors at all levels. One of the commonly used measures to reduce the pulsating voltage is to increase the frequency of the rectified power supply. Since the pulsating voltage is superimposed on the DC high voltage, when the DC voltage is high, the measurement of the pulsating voltage becomes very difficult. [0003] At present, the main application scenario of pulsating voltage detection is the output quality detection of high-vo...

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): H02M1/15H02M1/32
CPCH02M1/15H02M1/32
Inventor 葛帅郝琪伟韦清瀚梁发金白鹏飞
Owner 天津航空机电有限公司
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com