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

Motor fault diagnosis method and device and motor

A fault diagnosis and fault technology, applied in the field of motors, can solve the problem of many monitoring limitations of characteristic variables, and achieve the effect of easy acquisition

Inactive Publication Date: 2018-12-18
GREE ELECTRIC APPLIANCES INC
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to overcome the defects of the above-mentioned prior art, and provide a motor rotor fault diagnosis method, device and motor to solve the problem of relying on a single sensor to monitor characteristic variables in the prior art.

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
  • Motor fault diagnosis method and device and motor
  • Motor fault diagnosis method and device and motor
  • Motor fault diagnosis method and device and motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. 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.

[0028] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embo...

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 motor rotor fault diagnosis method and device and a motor. The method comprises the steps of sampling a stator current of the motor to obtain sampling data of the stator current; processing the obtained sampling data to obtain first current frequency spectrum of the stator current; and performing fault diagnosis on the motor according to the obtained first current frequency spectrum. According to the scheme provided by the invention, the motor fault can be judged according to the stator current frequency spectrum hidden in the motor fault information, and parameter estimation is not needed to be performed on the motor.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a motor fault diagnosis method, device and motor. Background technique [0002] In recent years, with the wide application of AC speed control systems integrating motors and power electronic devices in steel, petroleum, light industrial machinery, transportation and many other industries. Condition monitoring and fault diagnosis technology of variable frequency motor is essential. Existing inverters mostly use sensors to monitor characteristic variables (current, speed and other signals). With the increase of system complexity, there are many restrictions on relying on a single sensor to monitor physical quantities. Contents of the invention [0003] The main purpose of the present invention is to overcome the defects of the above-mentioned prior art, and provide a motor rotor fault diagnosis method, device and motor, so as to solve the problem in the prior art that relying on ...

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): G01R31/34
Inventor 赵杰刘文龙王龙娜
Owner GREE ELECTRIC APPLIANCES INC