A two-stage dc-dc converter with partial power regulation

A technology of DC-DC and partial power, which is applied in the direction of output power conversion device, adjustment of electric variable, conversion of DC power input to DC power output, etc. It can solve the problem of large loss of the first-stage converter and the inability to realize signal grounding and power supply Grounding electrical isolation and soft switching, low conversion efficiency of two-stage or multi-stage converters, etc., to achieve the effect of improving efficiency and high power density

Active Publication Date: 2022-04-05
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional single-stage converters have a simple circuit structure and cannot achieve electrical isolation and soft switching between signal ground and power ground within a wide input voltage range
In traditional two-stage or multi-stage converters, all input power has to be processed by the first-stage and second-stage converters, and overall, the conversion efficiency of the two-stage or multi-stage converters is relatively low. The loss on

Method used

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  • A two-stage dc-dc converter with partial power regulation
  • A two-stage dc-dc converter with partial power regulation
  • A two-stage dc-dc converter with partial power regulation

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Embodiment 1

[0034] This embodiment provides a two-stage DC-DC converter with a partial power regulation function, such as Figure 1-2 shown, including

[0035] input power;

[0036] ACF transformation unit;

[0037] Intermediate capacitor unit;

[0038] Resonant conversion unit;

[0039] Output rectification unit;

[0040] load unit.

[0041] The input power supply is connected to the ACF conversion unit, the intermediate capacitor unit is connected to the input power supply, the ACF conversion unit, and the output rectification unit, and the load unit is connected to the output terminal of the output rectification unit .

[0042] The ACF conversion unit includes: a first capacitor C r1 , the first power switch Q 1 , the second power switch Q 2 , the first inductance L r1 , Exciting inductance L m1 , the primary winding coil, the secondary winding coil and the seventh power switch SR, the first capacitor C r1 The first terminal and the second power switch Q 2 The drain is con...

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Abstract

A two-stage DC-DC converter with a partial power regulation function, comprising: an input power supply; a primary conversion unit; an intermediate capacitor unit; a resonant conversion unit; an output rectification unit; and a load unit. The input power supply is connected to the ACF conversion unit, the intermediate capacitor unit is connected to the input power supply, the ACF conversion unit, and the output rectification unit, and the load unit is connected to the output terminal of the output rectification unit . The invention solves the problem of low efficiency of the traditional two-stage DC-DC converter, has high efficiency and high power density, and can meet different output voltage requirements.

Description

technical field [0001] The invention relates to the field of transformers, in particular to a two-stage DC-DC converter with a partial power regulation function. Background technique [0002] High-level DC voltages are widely used in applications such as photovoltaic systems, medical and industrial x-ray and telecommunication equipment and traveling wave tubes. Traditional single-stage converters have a simple circuit structure and cannot achieve electrical isolation and soft switching between signal ground and power ground within a wide input voltage range. In traditional two-stage or multi-stage converters, all input power has to be processed by the first-stage and second-stage converters, and overall, the conversion efficiency of the two-stage or multi-stage converters is relatively low. The loss is larger. Contents of the invention [0003] In order to solve the above technical problems, the present invention proposes a two-stage DC converter structure using partial ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/335
CPCH02M3/33569
Inventor 王文博欧阳紫威张国旗
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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