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Method of determining magnetic conductive member stray loss

A stray loss and component technology, applied in the direction of the size/direction of the magnetic field, can solve the problems of loss difference, loss error of magnetic conductive structural parts, etc., and achieve the effect of accurate and reasonable loss data

Active Publication Date: 2017-05-10
BAODING TIANWEI BAOBIAN ELECTRICAL +4
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Problems solved by technology

The difference in the distribution of the leakage magnetic field will lead to a difference in the loss of the excitation coil under the same excitation current condition. Therefore, the traditional "load loss-no-load loss" processing method will produce a certain error in the loss of the magnetic structure.

Method used

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  • Method of determining magnetic conductive member stray loss
  • Method of determining magnetic conductive member stray loss

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0028] The invention mainly uses the simulation calculation means to correct the loss experimental measurement result, so that the measured loss data is more accurate.

[0029] First, under the condition of applying the same excitation current, measure the load conditions (including magnetic components, such as figure 1 ) and no-load conditions (excluding magnetic components, such as figure 2 ) The total loss under the two working conditions P load and P noload , the difference between the two values ​​according to the formula (1), and the loss of the magnetic permeable member is obtained P t ;

[0030] Then, use the simulation calculation software to calculate and obtain the loss difference of the excitation coil (excitation coil 2 and excitation coil 3) under load and no-load conditions according to the formula (3) δ .

[0031] Finally, the loss ...

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Abstract

The invention relates to a method of determining magnetic conductive member stray loss, and belongs to a power transformer electromagnetic measurement technology field. According to the technical scheme of the invention, a simulation calculation way is adopted to correct a magnetic conductive member loss measurement result of an electromagnetic device. The magnetic conductive member loss is measured by adopting a conventional load-zero load way, and then the simulation calculation way is adopted to acquire a loss difference between a load working condition and a zero load working condition of an excitation coil, and at last, the loss difference is introduced in the magnetic conductive member loss measurement result, and therefore final loss data is acquired. The method is advantageous in that by adopting the simulation calculation way, a loss difference between two working conditions of a non-magnetic conductive material copper wire is calculated accurately, and the loss difference is introduced in the measurement result to correct the magnetic conductive member loss acquired by the experimental measurement, and therefore the accurate and reasonable loss data is acquired.

Description

technical field [0001] The invention relates to a method for determining the stray loss of a magnetic conduction member, and belongs to the technical field of electromagnetic measurement of power transformers. Background technique [0002] At present, in the field of electromagnetic measurement technology, there are technical difficulties in the measurement of stray loss of magnetic conductive structural parts in electromagnetic devices, mainly in the load (including magnetic conductive structural parts) and no-load (excluding magnetic conductive structural parts) working conditions. The leakage field distribution around the excitation coil will vary. The difference in the distribution of the leakage magnetic field will lead to the difference in the loss of the excitation coil under the same excitation current condition. Therefore, the traditional "load loss-no-load loss" processing method will produce a certain error in the loss of the magnetic structure. Contents of the ...

Claims

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Application Information

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IPC IPC(8): G01R33/02
CPCG01R33/02
Inventor 刘涛刘兰荣刘洋翟志强刘玉龙车福来王伟张晓光刘主光朱承治
Owner BAODING TIANWEI BAOBIAN ELECTRICAL
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