Fine design method for voltage and current transmission ratio of high-frequency transformer

A technology of high-frequency transformer and current transmission ratio, which is applied in the direction of conversion equipment that can be converted to DC without intermediate conversion, and can solve the problem that high-frequency transformers cannot realize voltage or current conversion, lack of refined design methods, and the impact mechanism is unclear And other issues

Active Publication Date: 2017-07-25
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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Problems solved by technology

However, due to the influence of parasitic parameters at high frequencies, the voltage and current transfer characteristics of the transformer will change with the frequency, which may make the voltage and current transfer ratio of the transformer no longer equal to the winding turns ratio
This will cause the high-frequency transformer to fail to achieve the expected

Method used

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  • Fine design method for voltage and current transmission ratio of high-frequency transformer
  • Fine design method for voltage and current transmission ratio of high-frequency transformer
  • Fine design method for voltage and current transmission ratio of high-frequency transformer

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Embodiment Construction

[0060] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0061] Taking a 20kHz high-frequency transformer as an example below, the effectiveness of the fine design method for the voltage and current transmission ratio of the high-frequency transformer of the present invention is verified.

[0062] Table 1 shows the main parameters of the high frequency transformer

[0063]

[0064]

[0065] In order to verify the effectiveness of the refined design method of high-frequency transformer transmission ratio, a 20kHz high-frequency transformer was tested for voltage and current transmission characteristics. The photo of this high frequency transformer is shown in image 3 The main parameters are shown in Table 1. The prototype uses a U-shaped nanocrystalline magnetic core, and the windings are evenly distributed on the two core legs of the magnetic core. The low-voltage winding is on the inside, with a total of...

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Abstract

The invention discloses a fine design method for a voltage and current transmission ratio of a high-frequency transformer. The method comprises the steps of A, building a voltage and current transmission function of the high-frequency transformer, and acquiring transmission characteristic resonant property; B, proposing design constraint of the transmission ratio of the high-frequency transformer; and C, achieving design of the transmission ratio of the high-frequency transformer. By the method, the voltage and current transmission ratio of the high-frequency transformer can be approximate to a turn ratio of a winding, so that expected voltage and current conversion of the high-frequency transformer is enabled to be achieved, and the method has certain guidance significance to optimal design of the high-frequency transformer.

Description

technical field [0001] The invention belongs to the technical field of power system analysis, and in particular relates to a refined design method for the voltage and current transmission ratio of a high-frequency transformer. Background technique [0002] With the shortage of traditional energy sources and the intensification of environmental problems, large-scale renewable energy generation has received extensive attention. my country has vigorously developed large-scale offshore wind farm power generation and other forms of DC power, such as photovoltaic power, electrochemical battery energy storage and fuel cell power. However, limited by the accommodation capacity of the power system and the intermittent and random characteristics of renewable energy generation, the traditional power grid is increasingly constrained in accepting large-scale renewable energy, and the establishment of a DC power grid is a solution to this problem. effective way. The high-power DC-DC con...

Claims

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Application Information

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IPC IPC(8): H02M5/12
CPCH02M5/12
Inventor 齐磊刘晨崔翔东野忠昊张科科刘婷婷康伟
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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