Title:
MULTI-LEVEL CONVERSION CIRCUIT, POWER CONVERTER, AND ELECTRIC POWER SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/065280
Kind Code:
A1
Abstract:
Embodiments of the present application provide a multi-level conversion circuit, comprising a bridge arm, an inductor, a first level conversion unit, and a second level conversion unit. The bridge arm is connected to the first level conversion unit and the second level conversion unit in parallel, and the midpoint of the bridge arm is connected to the inductor; each level conversion unit comprises a first switching transistor, a second switching transistor, a first capacitor, a second capacitor, and a level increasing circuit; series connection ends of the first capacitor and the second capacitor are connected to series connection ends of the first switching transistor and the second switching transistor by means of the level increasing circuit; the first capacitor and the first switching transistor of the first level conversion unit are connected to a first direct-current connection end; the second capacitor and the second switching transistor of the first level conversion unit are respectively connected to the first capacitor and the first switching transistor of the second level conversion unit; the second capacitor and the second switching transistor of the second level conversion unit are connected to a second direct-current connection end; and the level increasing circuit is used for increasing a circuit level. By using the present application, the switching voltage of each switching transistor can be reduced, and the current ripple of the inductor can be reduced.
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Inventors:
LU FENGLONG (CN)
SHI LEI (CN)
TANG YUNYU (CN)
CHEN DONG (CN)
XIN KAI (CN)
SHI LEI (CN)
TANG YUNYU (CN)
CHEN DONG (CN)
XIN KAI (CN)
Application Number:
PCT/CN2022/122148
Publication Date:
April 04, 2024
Filing Date:
September 28, 2022
Export Citation:
Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02M7/487; H02M7/483; H02M7/5387
Domestic Patent References:
| WO2011024010A2 | 2011-03-03 |
Foreign References:
| CN106887965A | 2017-06-23 | |||
| CN103475249A | 2013-12-25 | |||
| CN110829872A | 2020-02-21 | |||
| CN106787922A | 2017-05-31 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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