Title:
DIRECT-CURRENT CONVERTER, COMMUNICATION DEVICE AND PHOTOVOLTAIC SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/031552
Kind Code:
A1
Abstract:
Disclosed in the embodiments of the present application are a direct-current converter, a communication device and a photovoltaic system. The direct-current converter comprises a full-bridge inverter, a control module, a transformer, a resonant circuit and a rectification module, wherein the full-bridge inverter comprises a first switch device, a second switch device, a third switch device and a fourth switch device; the control module adjusts the duty cycle of the first switch device, the second switch device, the third switch device or the fourth switch device to be a first duty cycle, such that an output voltage of the direct-current converter is a first voltage; and the control module further controls the operating frequency of the direct-current converter to be a first operating frequency, and the absolute value of the difference value between the first operating frequency and a resonant frequency of the resonant circuit is less than or equal to a threshold value, such that switch devices, apart from the adjusted first switch device, second switch device, third switch device or fourth switch device, in the direct-current converter operate in a soft-switching state. By means of the embodiments of the present application, the efficiency of a direct-current converter can be improved.
Inventors:
HE ZHENGYAN (CN)
Application Number:
PCT/CN2022/111839
Publication Date:
February 15, 2024
Filing Date:
August 11, 2022
Export Citation:
Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02M3/335; H04L27/00
Foreign References:
| CN111010043A | 2020-04-14 | |||
| CN206658155U | 2017-11-21 | |||
| CN111181408A | 2020-05-19 | |||
| CN108075668A | 2018-05-25 | |||
| CN111049369A | 2020-04-21 | |||
| CN114039494A | 2022-02-11 | |||
| CN114640255A | 2022-06-17 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
Download PDF: