Title:
POWER SUPPLY APPARATUS AND POWER SUPPLY CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2023/078432
Kind Code:
A1
Abstract:
A power supply apparatus and a power supply control method. The apparatus comprises at least two power supply input ends (2001), a switching module (2003), a control module (2004), a suppression module (2005), a switch module (2006), a power factor correction module (2007), and a power supply output end (2010). The capacitance voltage of the power factor correction module (2007) is sufficient to maintain voltages at two ends of the apparatus greater than a peak value of the voltage of any power supply input end (2001) when the apparatus operates normally, and when a power supply (101) is switched, the voltage of the power factor correction module (2007) can be maintained close to a peak value of an input voltage of the current power supply input end (2001). Moreover, since the suppression module (2005) is also provided in a circuit to suppress an impact current during switching, a current, which is generated at the moment when a new power supply input end (2001) is connected, is very small. When the voltage on an energy storage capacitor (20071) is close to or equal to an input peak voltage, the switch module (2006) is started without zero-cross detection, such that zero-current switching is achieved, a whole power supply switching process is completed, the waiting time during switching is shortened, and the switching efficiency is improved.
Inventors:
FENG LEI (CN)
Application Number:
PCT/CN2022/130110
Publication Date:
May 11, 2023
Filing Date:
November 04, 2022
Export Citation:
Assignee:
RUIJIE NETWORKS CO LTD (CN)
International Classes:
H02J9/06
Foreign References:
| CN113972702A | 2022-01-25 | |||
| CN104578383A | 2015-04-29 | |||
| CN211670765U | 2020-10-13 | |||
| US20100274407A1 | 2010-10-28 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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