Apparatus and method for detecting rotor-side dynamic thermal parameter of medium-low-speed motor in real time

A low-speed motor, real-time detection technology, used in measuring devices, temperature measurement in motors, motor vehicles, etc., can solve the problem that real-time thermal detection of motor rotors cannot be performed, achieve real-time monitoring and fault prediction, improve motor efficiency, The effect of prolonging the service life

Inactive Publication Date: 2016-07-13
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0005] In view of the above-mentioned problems in the prior art, the purpose of the present invention is to propose a real-time detection device and method for dy

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  • Apparatus and method for detecting rotor-side dynamic thermal parameter of medium-low-speed motor in real time
  • Apparatus and method for detecting rotor-side dynamic thermal parameter of medium-low-speed motor in real time
  • Apparatus and method for detecting rotor-side dynamic thermal parameter of medium-low-speed motor in real time

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with specific examples, but the present invention is not limited to the examples.

[0022] When the laboratory is measuring the temperature of the rotor side of a certain motor, the first thing to consider is the rotational speed. When the rotational speed is below 10000r / min, the method pointed out by the present invention can be used. Combining the material of the motor shaft and the laboratory technology, the motor adopts the method of punching a small hole in the middle of the shaft. Among them, the axial round hole 9 is opened from one end of the rotating shaft to the stator core, and the diameter of the small hole is 5mm, which can be determined according to the actual situation, and is proportional to the number of detection points and the gauge of the signal wire; the radial round hole 10 is from the iron core The rotating shaft at the cross section opens into the axial circular hole ...

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Abstract

The invention belongs to the technical field of motors and specifically discloses an apparatus and method for detecting a rotor-side dynamic thermal parameter of a medium-low-speed motor in real time. A signal of a temperature sensor on a rotor thermal parameter test point is introduced to a slip ring along a rotating shaft via a signal wire, and then is connected with an experimental detecting instrument via a slip ring external wire. In order to enhance stability, a groove and a small hole are sealed by glue after a wire is introduced. The method has no influence on the dynamic performance of the rotor and may detect the rotor-side dynamic thermal parameter of the motor in real time. An acquired parameter provides conditions for the optimization of the motor rotor and a ventilation structure. The method monitors the motor rotor in real time and forecasts faults, contributes to the prolongation of the service life of the motor, and increases motor efficiency.

Description

technical field [0001] The invention belongs to the technical field of motors, and specifically discloses a real-time detection device and method for dynamic thermal parameters on the rotor side of a medium-low speed motor. Background technique [0002] The rotor is an important part of the motor and a device that realizes the conversion of electrical energy and mechanical energy, and its performance directly affects the stability of the motor's operation. The heating of the motor is one of the main factors restricting the efficiency of the motor. In addition, the heating of the motor will also pose a threat to the service life and operational safety of the motor. When the motor is running, the temperature rise of the rotor is far greater than the temperature rise of other parts of the motor. Therefore, under the premise of not affecting the dynamic performance of the rotor, real-time detection of the dynamic thermal parameters of the motor rotor side is beneficial to the ...

Claims

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Application Information

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IPC IPC(8): G01K13/08
CPCG01K13/08G01K2205/00
Inventor 丁树业刘建峰张睿陈景易
Owner HARBIN UNIV OF SCI & TECH
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