Title:
BOOSTING CIRCUIT INTEGRATING APFC AND SWITCHED CAPACITOR CONVERTER, AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2023/060724
Kind Code:
A1
Abstract:
The present invention relates to the technical field of power electronics, and provides a boosting circuit integrating an APFC and a switched capacitor converter, and a control method. The APFC and the switched capacitor converter share two switch tubes, and a PWM signal is used to respectively control the two switch tubes, so that inductive current changes along with an input voltage, so as to achieve active power factor correction. The control method is simple, and a dead zone time does not need to be set; in addition, the capacitor of the switched capacitor converter is used to replace a direct-current capacitor between two stages of traditional APFC or a buffer large capacitor of a single-stage APFC, and the switched capacitor converter is charged/discharged by turning on/off the switch tubes, so that a wide-range and high-voltage output voltage is realized.
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Inventors:
FU QING (CN)
CHEN YISHAN (CN)
SU YIXING (CN)
YANG HANG (CN)
WEI ZHONGSHUANG (CN)
CHEN YISHAN (CN)
SU YIXING (CN)
YANG HANG (CN)
WEI ZHONGSHUANG (CN)
Application Number:
PCT/CN2021/134392
Publication Date:
April 20, 2023
Filing Date:
November 30, 2021
Export Citation:
Assignee:
UNIV SUN YAT SEN (CN)
International Classes:
H02M1/42; H02M1/14; H02M3/158; H02M7/04
Foreign References:
| CN108028601A | 2018-05-11 | |||
| CN112821761A | 2021-05-18 | |||
| CN1421976A | 2003-06-04 | |||
| CN103337968A | 2013-10-02 | |||
| US20090168476A1 | 2009-07-02 | |||
| US20200099311A1 | 2020-03-26 |
Attorney, Agent or Firm:
YOGO PATENT AND TRADEMARK AGENCY LIMITED COMPANY (CN)
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