Method for testing reactance parameter of surface type permanent magnet synchronous motor

Abstract

The invention relates to a test method of reactance parameters of a surface permanent magnet synchronous motor, and the test method comprises the following steps: 1) test devices are selected and the preparation is carried out, 2) the test process is carried out, 3) test data is analyzed, 4) the calculation is carried out according to the following Ld and Lq; the steps for selecting the test devices are as follows, a variable frequency meter, a current meter and a voltage meter are selected; the steps of the test process are as follows, when in test, a rotor is slowly moved, the maximum and the minimum of the current which is extracted by the current meter are observed, the voltage value of a power supply is recorded simultaneously; the steps for analyzing the test data are as follows, the main test data which is the resistance and the reactance value of the motor is calculated by a reactance parameter expression; the Ld and Lq calculation steps are as follows, the direct-axis synchronous reactance Ld and the quadrature-axis synchronous reactance Lq are measured for the permanent magnet synchronous motor with the sine wave power supply. Compared with the methods of the prior art, the method can more conveniently measure the reactance parameters of the surface permanent magnet synchronous motor by the simple test devices, thereby having certain economic benefit.

Description

technical field [0001] The invention relates to a method for testing reactance parameters of a permanent magnet synchronous motor, in particular to a method for testing reactance parameters of a surface type permanent magnet synchronous motor. Background technique [0002] The test methods for the reactance parameters of permanent magnet synchronous motors include: direct load method, voltage integration method, and DC attenuation method. Most of these test methods are relatively complicated and depend on the test device. [0003] Take the voltage integration method as an example: the measurement of the voltage integration method requires the participation of the following test devices, such as digital fluxmeter, non-inductive resistor, rectifier bridge, sliding wire rheostat box, air switch, ammeter and other instruments, when operating, special operation is required It can only be tested after adjustment by personnel. Therefore, the integration method of unit voltage in ac...

AI Technical Summary

Problems solved by technology

[0004] It is more suitable for some specific test departments, but in some production environments without special test devices, it is very difficult to measure the reactance parameters of permanent magnet synchronous motors. Therefore, a method is needed, which can be compared by measuring with simple test devices Accurate Reactance Parameters

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