Motor fault detection system
By using frequency converters and multiple detection modules in the motor fault detection device, the problems of difficult detection and inaccurate determination of fault causes in the prior art are solved, and accurate fault detection and fault cause analysis are realized in humid environments, ensuring the safety and reliability of the equipment.
CN119667471APending Publication Date: 2025-03-21NORTHEAST LIGHT ALLOY CO LTD +1
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Patent Information
- Application Number
- CN202411694457.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-03-21
AI Technical Summary
Technical Problem
The existing motor fault detection devices have problems such as difficult detection and inaccurate determination of the cause of failure, especially in humid environments.
Method used
The inverter is used as the motor starter, and the output current, insulation resistance value, torque and temperature of the motor are detected through the harmonic detection module, insulation monitoring module, torque measurement module and temperature sensor to determine the operating status of the motor and the cause of the fault.
Benefits of technology
It realizes accurate detection of motor failure and its causes in humid environments, timely resolution of faults, prevent safety hazards, and ensure stable and reliable operation of the equipment.
✦ Generated by Eureka AI based on patent content.
Abstract
A fault detection system of a motor belongs to the technical field of motor fault detection, and aims to solve the problems that the existing motor fault detection device is high in detection difficulty and inaccurate in fault reason judgment. The fault detection system comprises the steps that a frequency converter is adopted as a motor starter, and the input voltage of the motor is gradually increased; a harmonic detection module is adopted to detect the harmonic component of a current signal output by the motor, and the harmonic detection module outputs a harmonic waveform; detecting whether the motor is in a normal operation state, a winding short-circuit fault state, a winding open-circuit fault state or a bearing fault state according to the harmonic waveform; a built-in insulation monitoring module of the frequency converter is adopted to detect the insulation resistance value of the motor; judging a motor leakage state according to the insulation resistance value; a torque measuring module arranged in the frequency converter is used for detecting the torque of the motor; judging a motor torque fault state according to the torque; a temperature sensor arranged in the frequency converter is used for detecting the temperature of the motor; and judging a motor fault state according to the temperature. The method is used for motor fault detection.
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