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Reactor test method and test device

A test method and test device technology, which are applied to measurement devices, measurement resistance/reactance/impedance, instruments, etc., can solve the problems of error in calculation results, inability to calculate accurately, and low accuracy, and achieve the effect of improving accuracy

Active Publication Date: 2018-01-30
SIEMENS ELECTRICAL DRIVES
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the inductance tends to be saturated, the relationship between discharge current and time is not linear, and there will be large errors in the calculation results
For the dynamic inductance value corresponding to a certain current value, this method cannot be accurately calculated; another calculation method is to use the scientific calculation function of Microsoft Office Excel to calculate the inductance value by the method of curve fitting, but Excel The fitting method provided is relatively simple, with low precision, and cannot calculate the inductance value very accurately

Method used

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  • Reactor test method and test device

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Embodiment Construction

[0033] The testing device and testing method according to the present invention will be described in detail below with reference to the accompanying drawings.

[0034] First refer to image 3 , the reactor testing device 100 according to the present invention includes: a data conversion module 1; a data display module 2; a data filtering module 3; a differential module 4; an inductance calculation module 5;

[0035] More specifically, as Figure 4 As shown, the data conversion module 1 is used to receive the ratio of the input voltage and current sensor, as well as the collected data from the oscilloscope (such as the voltage, current and sampling time of the reactor under test), and convert the above input data into identifiable format, and output the converted data to the data display module 2.

[0036] Such as Figure 5 As shown, the data display module 2 is used to receive the converted data from the data conversion module 1, including voltage, current and sampling time...

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Abstract

The invention discloses a reactor testing method, which comprises the following steps: step S1: data conversion step; step S2: data display step; step S3: data filtering step; step S4: data calculation step; step S5: data drawing step; and step S6: inductance determination step. By using the testing method of the present invention, the inductance value of the reactor can be obtained through testing with higher precision.

Description

technical field [0001] The present invention relates to a testing method, more specifically, the present invention relates to a reactor testing method. The invention also relates to a testing device for carrying out the above-mentioned method. Background technique [0002] In the prior art, when performing a performance certification test on an input / output reactor, it is necessary to measure and calculate its actual rated inductance value and dynamic inductance value. Such as figure 1 As shown in the prior art, an oscilloscope is used to record the current, voltage and time when the capacitor bank is discharged, and then the rated inductance value and dynamic inductance value are calculated. There are two traditional calculation methods: one is to use the calculation function of the oscilloscope itself to manually select a section on the discharge current curve and calculate the inductance value of this section. Only the average inductance value in one current segment ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R27/26
Inventor 杨飞史安龙
Owner SIEMENS ELECTRICAL DRIVES