RESONANT CONVERTER, AND VOLTAGE CONVERSION METHOD - HUAWEI DIGITAL POWER TECH CO LTD

Title:

RESONANT CONVERTER, AND VOLTAGE CONVERSION METHOD

Document Type and Number:

WIPO Patent Application WO/2022/000217

Kind Code:

A1

Abstract:

A resonant converter and a voltage conversion method. The resonant converter comprises a high-frequency inverter circuit (101), an inductor-inductor-capacitor (LLC) resonant slot network (102), and a hybrid rectification circuit (103), wherein the LLC resonant slot network is respectively coupled to the high-frequency inverter circuit and the hybrid rectification circuit. The high-frequency inverter circuit is used to convert a first direct current voltage into a first alternating current voltage. The LLC resonant slot network is used to adjust the first alternating current voltage to obtain a second alternating current voltage. The hybrid rectification circuit operates in a full-bridge rectification mode if a direct current voltage regulation gain is within a first threshold range, and operates in a voltage-doubling rectification mode, if the direct current voltage regulation gain is within a second threshold range, so as to convert the second alternating current voltage into a second direct current voltage to be output. The direct current voltage regulation gain is a ratio of the second direct current voltage to the first direct current voltage. The resonant converter and the voltage conversion method achieve high conversion efficiency of the resonant converter during power conversion in a wide input-output voltage range.

Inventors:

ZHONG SHU (CN)
LV ZEJIE (CN)
YI LIQIONG (CN)
PAN DENGHAI (CN)
QIU YUPING (CN)
YANG ZEZHOU (CN)

Application Number:

PCT/CN2020/099052

Publication Date:

January 06, 2022

Filing Date:

June 29, 2020

Export Citation:

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Assignee:

HUAWEI DIGITAL POWER TECH CO LTD (CN)

International Classes:

H02M3/335

Foreign References:

CN111181408A	2020-05-19
US20140036545A1	2014-02-06

Other References: