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Alternating current induction motor detection brake device and detection system

A technology of induction motors and braking devices, which is applied in the direction of motor generator testing, etc., can solve problems such as shaft surface damage and complex structures, and achieve the effects of shortening detection time, improving detection efficiency, and simple structure

Inactive Publication Date: 2014-10-22
SHANGHAI AOBOOR ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of mechanical device is often complex in structure, and its friction with the AC induction motor shaft is easy to cause damage to the shaft surface

Method used

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  • Alternating current induction motor detection brake device and detection system
  • Alternating current induction motor detection brake device and detection system
  • Alternating current induction motor detection brake device and detection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as figure 1 As shown, it is a schematic structural diagram of a detection and braking device for an AC induction motor of the present invention, which is applied to a detection system for an AC induction motor. The system may include a measurement and control device 101 and an AC power supply 102, and the detection and braking device may include:

[0052] A DC power supply 103 connected to the measurement and control device 101 .

[0053] Wherein, the DC power supply 103 can specifically be a program-controlled DC power supply. At this time, the program-controlled DC power supply can be connected to the measurement and control device 101; of course, the DC power supply 103 can also be an ordinary DC power supply, such as a DC stabilized power supply. This is not specifically limited.

[0054] The AC-DC switching device 105 connected to the measurement and control device 101, the AC power supply 102, the DC power supply 103, and the AC induction motor 104 respectiv...

Embodiment 2

[0060] For the detection of single-phase AC induction motors, the present invention provides another detection and braking device for AC induction motors, such as figure 2 The schematic diagram of the detection and braking device shown is applied to the detection system of an AC induction motor. The system may include: a measurement and control device 201 and a single-phase programmable AC power supply 202 connected thereto, and the detection and braking device may include:

[0061] A program-controlled DC power supply 203 connected to the measurement and control device 201 .

[0062] The AC-DC switching device 205 connected to the measurement and control device 201, the program-controlled DC power supply 203 and the single-phase AC induction motor 204 respectively. In the embodiment of the present invention, the AC-DC switching device 205 may include: a first relay J1 and a second relay J2, in,

[0063] The normally closed contact of the first relay J1 is connected with the...

Embodiment 3

[0071] For the detection of single-phase AC induction motors, the present invention provides another detection and braking device for AC induction motors, such as image 3The schematic structural diagram of the detection and braking device shown is applied to the detection system of an AC induction motor. The system may include: a measurement and control device 301 and a single-phase programmable AC power supply 302 connected thereto, and the detection and braking device may include:

[0072] A program-controlled DC power supply 303 connected to the measurement and control device 301 .

[0073] The AC-DC switching device 305 connected to the measurement and control device 301, the program-controlled DC power supply 303 and the single-phase AC induction motor 304 respectively. In the embodiment of the present invention, the AC-DC switching device 305 may include: the first photo-controlled thyristor component SCR1 and The second photo-controlled thyristor component SCR2, wherei...

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PUM

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Abstract

The invention provides an alternating current induction motor detection brake device and a detection system. When detection of some gear is completed, an alternating current power supply stops providing power for an alternating current induction motor; when the detected alternating current induction motor performs decelerated motion, a measuring and control device connects a direct current power supply with the alternating current induction motor by controlling an alternating current and direction current switching device, the direct current power supply provides the alternating current induction motor with a direct excitation signal lasting for a certain time so as to enable a stator of the alternating current induction motor to produce a constant magnetic field, and the magnetic field enables a rotor of the alternating current induction motor to produce a brake torque to control the rotator to rapidly stop rotating, so that detection time of any gear of the alternating current induction motor is greatly shortened, and detection efficiency is improved. Besides, since an additional mechanical clamping shaft device is not needed, mechanical abrasion does not exist, and surface damages to a shaft of the single-phase alternating current induction motor are avoided.

Description

technical field [0001] The invention relates to the technical field of motor testing, in particular to a detection braking device and a detection system for an AC induction motor. Background technique [0002] In the detection of AC induction motors, the low-voltage start-up characteristics and rated voltage start-up characteristics are usually detected, that is to say, it is necessary to use low-voltage and rated voltage to supply power to a completely static AC induction motor respectively. Therefore, in the actual detection , when the low-voltage starting detection of the AC induction motor is completed, the rated voltage starting detection of the AC induction motor must be waited until the AC induction motor is completely stopped. In this regard, at present, the frictional force of the bearing between the stator and the rotor of the AC induction motor is usually used to cause the AC induction motor to stop naturally. [0003] However, since the friction loss of the bear...

Claims

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Application Information

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IPC IPC(8): G01R31/34
Inventor 邹维克
Owner SHANGHAI AOBOOR ELECTRONICS
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