Method for testing partial performances of three-phase asynchronous motors

A three-phase asynchronous, high-performance technology, applied in the direction of motor generator testing, machine/structural component testing, static/dynamic balance testing, etc., can solve problems such as long time-consuming, high energy consumption, and expensive equipment, and achieve Save time, save power consumption, and reduce the cost

Inactive Publication Date: 2010-01-20
赵健身
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Problems solved by technology

[0003] In order to overcome the current three-phase asynchronous motor test, it is necessary to apply an actual simulated load, which has the disadvantages of high energy consumption, expensive equipment, and long time consumption.

Method used

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  • Method for testing partial performances of three-phase asynchronous motors

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Embodiment Construction

[0008] In the schematic diagram, the detection of the motor under test is completed jointly by the motor operation controller and the data acquisition and processing module. Acquisition and processing of current, voltage and speed of the motor. In the following operations, the frequency of the power applied to the tested motor is the rated frequency of the motor, and will not be described one by one. In the following tests, part of the test content, calculation formulas and methods refer to the test method of GB1032-2005 three-phase asynchronous motor.

[0009] 1. Determination of wind friction resistance and iron loss

[0010] First, start the motor under test, if the capacity of the power supply used for testing is large enough, start it directly. If the capacity of the power supply is not large enough, start the motor at low voltage, that is, start the motor under test with a lower voltage first, and when the speed of the motor no longer changes, adjust the voltage applie...

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Abstract

The invention provides a method for testing partial performances of three-phase asynchronous motors, which is mainly applied to the factory test and after-maintenance test on three-phase asynchronous motors, and can also be used for the quick verification of newly designed technical schemes for motors. The method comprises the steps of utilizing the inherent no-load operation characteristic of a three-phase asynchronous motor to measure the rotation inertia of a tested motor rotor and measuring the torque, output power, efficiency and other partial parameter indexes of the motor according to the change of the corresponding instantaneous speed of the rotor in different states and the operation parameters of the motor, thereby leaving out the part of applying analog load in the prior motor test method.

Description

technical field [0001] The invention relates to a partial performance test method of a three-phase asynchronous motor, which is mainly used in the factory test of the motor manufacturer and the performance test after maintenance, and can also be used to quickly verify the design technical scheme of the motor. technical background [0002] In the actual application of the three-phase asynchronous motor, it is used as the driving force, so the test method of simulating the actual working load of the motor is the traditional test method. At present, the performance testing methods of three-phase asynchronous motors mainly use the dynamometer method and the test motor method. Both of these methods need to apply a simulated load to the motor under test, and actually simulate the working conditions of the motor under different load conditions. The performance index of the tested motor under different load conditions is obtained. Whether it is the dynamometer method or the accompa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/00G01L3/24G01L3/26G01M1/10G01R31/34
Inventor 赵健身
Owner 赵健身
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