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Non-intrusive detection device and method for detecting eccentricity of induction motor

A technology of induction motors and electric motors, applied in the direction of electromechanical devices, electric components, electrical components, etc., can solve problems such as motor destructiveness

Active Publication Date: 2019-06-14
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although this method can effectively detect rotor eccentric faults, the intrusive detection method itself is destructive to the motor. Therefore, this method has not been widely used in actual engineering.

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  • Non-intrusive detection device and method for detecting eccentricity of induction motor

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Embodiment Construction

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0030] Such as figure 1 As shown, the present invention discloses a non-invasive detection device for detecting the eccentricity of an induction motor, including a computer 4, a thin film thermistor 6, a lead wire 5, a bus 3, and a junction box 2; The teeth are distributed in a matrix along the axial and circumferential directions of the stator 1...

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Abstract

The invention discloses a non-intrusion type detection apparatus for detecting eccentric faults of an induction motor and relates to the technical field of a motor. The detection apparatus comprises a processor and a film thermistor, wherein the film thermistor is arranged at a stator tooth portion of the motor, and the film thermistor is electrically connected with the processor. The invention further discloses a method for carrying out an induction motor eccentricity test by use of the non-intrusion type detection apparatus for detecting the eccentric faults of the induction motor. According to the invention, the apparatus and method have the advantages of monitoring the operation state of the motor for long time, rapidly discriminating eccentric fault types, positioning a minimum air gap position and guaranteeing long-term stable operation of the motor.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a non-invasive detection device for detecting the eccentricity of an induction motor and a detection method thereof. Background technique [0002] The eccentric fault of the motor specifically refers to the fault form in which the air gap between the stator and the rotor is uneven during the operation of the motor. Rotor eccentricity faults are mainly divided into the following three categories: static eccentricity, dynamic eccentricity, and mixed eccentricity. [0003] Static eccentric fault refers specifically to the fault form in which the geometric center of the stator and rotor deviates during the operation of the motor, and the rotor rotates around its own geometric center; dynamic eccentricity refers to the fault in which the geometric center of the stator and rotor deviates during the operation of the motor, and the rotor rotates around the geometric center of the stator ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K11/25
Inventor 鲍晓华狄冲周洋王春雨李泽辰
Owner HEFEI UNIV OF TECH