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Two-stage DC-DC converter with partial power regulation function

A DC-DC, partial power technology, applied in output power conversion devices, regulating electrical variables, converting DC power input to DC power output, etc. Grounding electrical isolation and soft switching, low conversion efficiency of two-stage or multi-stage converters, etc., to achieve high power density and improve efficiency

Active Publication Date: 2021-02-26
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • 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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  • Two-stage DC-DC converter with partial power regulation function
  • Two-stage DC-DC converter with partial power regulation function
  • Two-stage DC-DC converter with partial power regulation function

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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 end 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 connecte...

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Abstract

The invention discloses a two-stage DC-DC converter with a partial power regulation function. The two-stage DC-DC converter comprises: an input power supply; a primary conversion unit; an intermediatecapacitor unit; a resonant conversion unit; an output rectifying unit; and a load unit. The input power supply is connected with an ACF conversion unit, the intermediate capacitor unit is connected with the input power supply, the ACF conversion unit and the output rectification unit, and the load unit is connected to the output end of the output rectification unit. The two-stage DC-DC converterof the invention overcomes the problem that a traditional two-stage DC-DC converter is low in efficiency, 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 Applications(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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