Current transformer of high-power and medium-high frequency power supply and winding method

A technology of current transformers and high-frequency power supplies, applied in the manufacture of inductors/transformers/magnets, inductors, transformer/inductor coils/windings/connections, etc. problem, to achieve the effect of high measurement accuracy, light weight and small size

Inactive Publication Date: 2016-03-16
INDUCTOTHERM GROUP CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The current transformers in the past have the following two major defects. One is that the magnetic cores of the current transformers in the past generally use silicon steel alloy materials. This silicon steel alloy material has the advantages of low price, small mechanical stress, and large saturation magnetic induction. It is used as a magnetic core on components such as transformers and current transformers, but the loss of this material increases sharply at medium and high frequencies, and the heat is severe. Usually, the frequency of use does not exceed 400Hz. If it is used on intermediate frequency equipment, water cooling should be added inside. , so the volume is often made very large, it is difficult to adapt to the technical requirements of small volume and high precision of current induction heating equipment
The second is that the magnetic core of the traditional current transformer generally adopts a magnetic ring, and the primary current is changed only through one transformation ratio. In this way, when the primary current is large and the secondary current is small, the number of winding turns of the current transformer is very large. Taking into account the through-core of the primary winding, the volume of the magnetic core is selected to be larger, resulting in a larger volume of the current transformer, and due to the large number of w

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[0024] see figure 1 In order to better understand the technical solution of the present invention, the inventors of the present invention will describe in detail below through specific embodiments in conjunction with the accompanying drawings:

[0025] A current transformer for a high-power medium-frequency power supply of the present invention includes a primary magnetic ring 1 and a secondary magnetic ring 2, and a primary magnetic ring secondary winding 12 is wound on the annular magnet of the primary magnetic ring 1, and the primary magnetic ring The number of turns of the secondary winding 12 is 30 turns, and the secondary winding 22 of the secondary magnetic ring is wound on the annular magnet of the secondary magnetic ring 2 , and the number of turns of the secondary winding 22 of the secondary magnetic ring is 50 turns. The wire of the secondary winding 12 of the primary magnetic ring is wound on the annular magnet of the secondary magnetic ring 2 according to the specifi

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Abstract

The invention discloses a current transformer of a high-power and medium-high frequency power supply. The current transformer comprises a primary magnetic ring and a secondary magnetic ring. A primary magnetic ring secondary winding is wound onto the annular magnet of the primary magnetic ring. A secondary magnetic ring secondary winding is wound onto the annular magnet of the secondary magnetic ring. The two ends of a wire for winding the secondary magnetic ring secondary winding are provided with a load-side outgoing line of the current transformer of the high-power and medium-high frequency power supply. A wire for winding the primary magnetic ring secondary winding is wound onto the annular magnet of the secondary magnetic ring at a specified number of turns to form a secondary magnetic ring primary winding. The number of turns of the secondary magnetic ring primary winding is smaller than the number of turns of the primary magnetic ring secondary winding and the number of turns of the secondary magnetic ring secondary winding. The invention also provides a winding method for the current transformer of the high-power and medium-high frequency power supply.

Description

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Claims

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Application Information

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Owner INDUCTOTHERM GROUP CHINA
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