Unlock instant, AI-driven research and patent intelligence for your innovation.

Direct-current solid-state circuit breaker with two-way on-off and soft start functions, and control method thereof

A solid-state circuit breaker and soft-start technology, applied in emergency protection circuit devices, electrical components, etc., can solve problems such as high cost, and achieve the effect of avoiding the expansion of faults, taking into account the reliability of breaking, and taking into account the degree of functional integration.

Active Publication Date: 2021-12-28
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
View PDF17 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the existing topologies of solid-state circuit breakers with multiple functional integrations all rely on specific devices, such as wide-bandgap semiconductor devices, which are expensive and can only be used in low-voltage, low-current situations. The use of devices needs to be expanded

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
  • Direct-current solid-state circuit breaker with two-way on-off and soft start functions, and control method thereof
  • Direct-current solid-state circuit breaker with two-way on-off and soft start functions, and control method thereof
  • Direct-current solid-state circuit breaker with two-way on-off and soft start functions, and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0060] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the related invention, but not to limit the invention. In addition, it should be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.

[0061] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0062] A DC solid-state circuit breaker with bidirectional breaking and soft-start functions of the present invention includes the following modules:

[0063] Line current detection and controller, used to detect the circuit state of the ...

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 belongs to the field of direct-current solid-state circuit breakers, particularly relates to a direct-current solid-state circuit breaker with two-way breaking and soft starting functions, and a control method thereof, and aims to solve the problem of how to realize direct-current load soft starting of the direct-current solid-state circuit breaker and reliable breaking of two-way fault current in a middle and low voltage breaking occasion. The circuit breaker comprises:a controller used for detecting the circuit state of the direct-current solid-state circuit breaker and generating a corresponding switch on-off driving signal according to the line state; a switch on-off driver used for driving a main through-flow branch switch Sm, an energy-absorbing through-flow branch switch S1, an energy-absorbing through-flow branch switch S2 and an energy-absorbing branch switch S3 to be switched on or switched off according to the switch on-off driving signal so as to realize system steady state, fault transient state and soft start transient state control; and an energy absorption branch which absorbs fault current in a corresponding state. According to the invention, reliable on-off of bidirectional fault current of the direct-current solid-state circuit breaker in a medium-low voltage on-off occasion and soft start when the capacitive load is connected are realized.

Description

technical field [0001] The invention belongs to the field of DC solid-state circuit breakers, and particularly relates to a DC solid-state circuit breaker with bidirectional breaking and soft-start functions and a control method. Background technique [0002] In recent years, with the continuous development of renewable energy technology, the integration of large-scale distributed generation (DGs) into the power grid is a major trend of future power grid development, and is becoming a research focus of scholars at home and abroad. For the DC transmission system, the advantages of long transmission distance, large transmission energy, and low loss are combined with the power supply flexibility of distributed generation. The unique advantage of point power. But in the same way, after the power supply port is improved from the traditional single-ended to double-ended or even multi-ended, the corresponding fault current will also change from one-way to two-way, the fault curren...

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): H02H7/26
CPCH02H7/268
Inventor 朱晋曾庆鹏韦统振霍群海尹靖元
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Features
  • R&D
  • 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