Design method for multi-channel medium frequency transformer

A design method and technology for transformers, applied in the field of transformers, can solve the problems of large total volume of transformers, difficult construction, and large energy loss, and achieve the effects of high utilization rate of magnetic core, low construction difficulty and low cost.

Active Publication Date: 2017-06-27
绍兴汇友机电科技有限公司
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  • Application Information

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Problems solved by technology

[0003] In engineering practice, it is necessary to isolate each transformer, install a casing on each transformer, and package it in an independent box, so that the total volume of all transformers is large, not only the manufacturing cost is high, but the energy loss is also large. And the construction is difficult

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  • Design method for multi-channel medium frequency transformer
  • Design method for multi-channel medium frequency transformer
  • Design method for multi-channel medium frequency transformer

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Embodiment Construction

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0025] The invention provides a design method of a multi-channel intermediate frequency transformer, the multi-channel intermediate frequency transformer includes a single magnetic core and m pairs of windings, and all the windings are wound on the same magnetic core. The design method of described multi-channel intermediate frequency transformer comprises the steps:

[0026] S1: According to the core material, determine the magnetic flux density B of the core, and the intermediate frequency transformer generally chooses ferrite magnetic material as the core;

[0027] S2: The cross-sectional area of ​​the magnetic core corresponding to the i-th pair of windings is

[0028] Among them, the value of i is 1~m, U i is the voltage value of the i-th pair of windings, f i is the operating frequency of the i-th pair of windings, N i is the numbe...

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Abstract

The invention discloses a design method for a multi-channel medium frequency transformer, and relates to the field of transformers. The multi-channel medium frequency transformer comprises a single magnetic core and m pairs of windings. All the windings are wound around the same magnetic core. The design method for the multi-channel medium frequency transformer comprises the following steps that 1, according to materials of the magnetic core, the magnetic flux density B of the magnetic core is determined; 2, the sectional area of the magnetic core corresponding to the ith winding is shown in the description; 3, the total sectional area of the magnetic core is shown in the description; 4, voltage Ui of the winding is made to be equal to U, the number N of turns of the coil of the winding are made to be equal to N, and a total sectional area expression of the magnetic core is obtained; 5, the area Q of a window is shown in the description; 6, an appropriate Q is selected, the Q is made to be equal to K1Asum, and the total sectional area Asum of the magnetic core can be worked out; 7, according to the step 4, the number N of turns of the coil of the winding is worked out; 8, the number N of the turns of the coil adopts an integral value, and the step 4 is repeatedly executed. The multi-channel medium frequency transformer is of an integrated structure, the sectional area of the magnetic core is precisely calculated through the formulas, and therefore the size of the transformer is optimized.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a design method of a multi-channel intermediate frequency transformer. Background technique [0002] Since the withstand voltage level of a single power device cannot reach the voltage level of the power distribution system and the power transmission system, the power electronic device used in the power transmission and distribution system needs to use multiple transformers, and all the transformers are connected in series. [0003] In engineering practice, it is necessary to isolate each transformer, install a casing on each transformer, and package it in an independent box, so that the total volume of all transformers is large, not only the manufacturing cost is high, but the energy loss is also large. And the construction is difficult. [0004] The present invention proposes to adopt a multi-channel intermediate frequency transformer to solve the above problems, and invents a desi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02H01F41/04
CPCH01F41/0206H01F41/04
Inventor 廖育武余龙海
Owner 绍兴汇友机电科技有限公司
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