DC/DC CONVERTER SYSTEM AND CONTROL METHOD FOR FULL-BRIDGE DC/DC CONVERTER

Title:

DC/DC CONVERTER SYSTEM AND CONTROL METHOD FOR FULL-BRIDGE DC/DC CONVERTER

Document Type and Number:

WIPO Patent Application WO/2022/087910

Kind Code:

A1

Abstract:

A DC/DC converter system and control method for a full-bridge DC/DC converter are provided. The DC/DC converter system comprises a full-bridge DC/DC converter and a switch control circuit (140), the full-bridge DC/DC converter comprising at least a primary side full-bridge circuit (110), a secondary side full-bridge circuit (120) and a transformer (130). The switch control circuit (140) is configured to: control the primary side full-bridge circuit (110) and the secondary side full-bridge circuit (120) to operate in a normal operating phase; control the primary side full-bridge circuit (110) and the secondary side full-bridge circuit (120) to operate in a free-wheeling phase; and control the primary side full-bridge circuit (110) and the secondary side full-bridge circuit (120) to switch between the normal operating phase and the free-wheeling phase alternately. Thus, the magnetic saturation phenomenon is avoided without involving complicated measurement requirements while the energy transfer efficiency is guaranteed.

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Inventors:

BARUSCHKA LENNART (DE)
FROMME CHRISTOPHER (DE)

Application Number:

PCT/CN2020/124500

Publication Date:

May 05, 2022

Filing Date:

October 28, 2020

Export Citation:

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Assignee:

SIEMENS AG (DE)
SIEMENS LTD CHINA (CN)

International Classes:

H02M3/335; H02M3/28; H02M3/325

Foreign References:

CN108039822A	2018-05-15
CN103414347A	2013-11-27
CN108667305A	2018-10-16
US20140185328A1	2014-07-03
US20160365732A1	2016-12-15

Other References: