Method and device for measuring stray loss of components based on leakage flux compensation

A stray loss and measurement device technology, applied in the direction of electric power measurement through current/voltage, can solve problems such as coil loss and structural part loss separation, and achieve the effect of eliminating influence and facilitating position adjustment

Inactive Publication Date: 2011-11-30
BAODING TIANWEI GRP CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method and device for measuring stray loss of components

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  • Method and device for measuring stray loss of components based on leakage flux compensation
  • Method and device for measuring stray loss of components based on leakage flux compensation
  • Method and device for measuring stray loss of components based on leakage flux compensation

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Embodiment Construction

[0031] The present invention will be further described through the embodiments below in conjunction with the accompanying drawings.

[0032] Refer to attached figure 1 , through the variable frequency power supply voltage, measure the coil loss and the loss of the tested structural part under different frequencies and different current amplitudes. During the coil loss measurement process, the excitation coils are connected in anti-phase series (or in parallel), the compensation coils are kept in the same way as the excitation coils, and the currents in all coils are always equal throughout the test process. During the measurement of the total loss of the coil and the structural member under test, keep the connection mode of the excitation coil and the current frequency and amplitude consistent with the measurement of the coil loss.

[0033] The specific measurement method is:

[0034] ① First, no-load measurement is carried out, that is, there are only excitation coils and c...

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Abstract

The invention relates to a method and a device for measuring component stray loss based on leakage magnetic flux compensation, belonging to the technical field of electromagnetic measurement. The technical scheme is as follows: a power analyzer is connected at the side of an excitation coil in series; a voltage signal on the excitation coil is collected by the power analyzer; the loss of the excitation coil is measured; in the event of measuring the loss of the coil, a measured structure is removed and only the excitation coil and a compensation coil are connected in a measurement circuit; inthe event of measuring the total losses of the coil and the structure, the compensation coil is removed away from a measured region, and only the total losses of the excitation coil and the measured structure are measured. The method disclosed by the invention has the advantages that: the problem that the loss of the coil and the loss of the structure are hardly separated is resolved; the compensation coil is put on a movable bracket and is moved through a wheel assembly, thus the position of the compensation coil is conveniently adjusted in the measurement process; furthermore, all the structures, except the measured structure, are made of non-ferromagnetic materials, so the influence of ferromagnetic materials excluding test piece on the measurement result is eliminated.

Description

technical field [0001] The invention relates to a measurement method and a measurement device for component stray loss based on leakage magnetic flux compensation, belonging to the technical field of electromagnetic measurement. Background technique [0002] At present, the technical difficulty of measuring stray loss of electromagnetic device structural parts is to separate the loss in the tested component from the measured total loss, because the coil leakage field changes after the tested component is removed from the measuring device. The existing stray loss measurement methods cannot accurately separate the coil loss from the structural component loss. Contents of the invention [0003] The object of the present invention is to provide a method and device for measuring stray loss of components based on leakage magnetic flux compensation, which solves the problem of separation of coil loss and structural component loss. [0004] Technical scheme of the present inventi...

Claims

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Application Information

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IPC IPC(8): G01R21/06
Inventor 刘兰荣张卫韩贵胜王晓燕范亚娜石立新刘涛王亮
Owner BAODING TIANWEI GRP CO LTD
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