Intelligent low-tension motor protection device

A protection device and motor technology, applied in emergency protection circuit devices, electrical components, etc., can solve the problems of rotor vibration starting torque, inter-turn short circuit, motor end heating, etc., achieve great economic and social benefits, and realize intelligent and network, the effect of preventing accidental burnout

Inactive Publication Date: 2018-01-26
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Asymmetrical faults mainly include phase failure, phase-to-phase short circuit, inter-turn short circuit, three-phase unbalance, etc. The damage to the motor is mainly caused by the negative sequence effect caused by the negative sequence current, which may cause heating at the end of the motor, rotor vibration and reduced starting torque, etc. series of questions

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
  • Intelligent low-tension motor protection device
  • Intelligent low-tension motor protection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0023] Such as figure 1 , The present invention provides an intelligent low-voltage motor protection device, which includes a CPU module, an AC signal input module, a communication interface module, a switch input module, a switch output module, an analog output module, a man-machine interface module, and the like. The CPU is connected with each module. The AC signal input module converts the collected voltage and current signals into signals acceptable to the CPU and transmits them to the CPU. The communication interface module mainly realizes the remote data communication between the protection device and other monitoring centers. The module transmits the collected switch input signal and other state quantity information to the CPU, the switch output module transmits the switch output control signal of the CPU to the external control circuit, and the analog...

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 an intelligent low-tension motor protection device. The intelligent low-tension motor protection device includes a CPU module, an alternating current signal input module, a communication interface module, an on-off input module, an on-off output module, an analog quantity output module, a man-machine interface module and the like, wherein the CPU is communicated with each module; the alternating current signal input module converts the acquired voltage current signals into signals which can be received by the CPU, and the transmits the signals to the CPU; the communication interface module mainly realizes remote data communication between the protection device and other monitoring centers; the on-off input module transmits the acquired on-off input signals and otherquantity of state information to the CPU; the on-off output module transmits the on-off output signals of the CPU to an external control circuit; the analog quantity output module mainly supplies standard output current for the external of the protection device; and the man-machine interface module is used for realizing information interaction between the protection device and the external circuit.

Description

technical field [0001] The invention relates to an intelligent low-voltage motor protection device, which belongs to the technical field of electric power systems. Background technique [0002] The motor is a device that converts electrical energy into mechanical energy output, and is the source of power for other electromechanical equipment. It has been widely used in industries such as machining, metallurgy, coal, petroleum, chemical industry, and home appliances. In the actual use of the motor, the harsh operating environment and the working state beyond the technical indicators are the main reasons for various electrical failures of the motor. The direct and indirect losses caused by the failure or damage of the motor are quite huge. According to incomplete statistics, there are about 20 million medium-sized motors used in the country, and about 16% of the motors are burned out each year, about 3.2 million units. The average maintenance cost of each unit is 1,000 yuan, a...

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): H02H7/08
Inventor 李卫国吉雅坤王宏旭王雨濛陈艳
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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