Title:
DIRECT-CURRENT CONVERSION CIRCUIT AND PHOTOVOLTAIC INVERTER
Document Type and Number:
WIPO Patent Application WO/2024/078318
Kind Code:
A1
Abstract:
The present application provides a direct-current conversion circuit and a photovoltaic inverter. The direct-current conversion circuit comprises an RC circuit, and a first direct-current conversion unit and a second direct-current conversion unit which are connected to each other in parallel. The RC circuit comprises a resistor and a capacitor which are connected in series. The two terminals of the RC circuit are respectively connected to one terminal of a first switching tube in the first direct-current conversion unit and one terminal of a second switching tube in the second direct current conversion unit. When the state of the first switching tube or the second switching tube is switched, the other switching tube remains in an on or off state. The RC circuit is used for absorbing a peak voltage when the state of the first switching tube or the second switching tube is switched, so as to reduce the voltage change rate of the first switching tube or the second switching tube. The circuit cost of the direct-current conversion circuit is reduced, and the circuit design complexity is low.
Inventors:
SONG ZHENGANG (CN)
Application Number:
PCT/CN2023/121230
Publication Date:
April 18, 2024
Filing Date:
September 25, 2023
Export Citation:
Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02M3/156; H02J3/38; H02M1/08; H02M1/32; H02M1/44; H02M3/158; H02M7/48
Foreign References:
| CN115765449A | 2023-03-07 | |||
| CN105634399A | 2016-06-01 | |||
| CN113364334A | 2021-09-07 | |||
| CN103746556A | 2014-04-23 | |||
| CN111654183A | 2020-09-11 | |||
| JP2005210848A | 2005-08-04 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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