Title:
POWER SUPPLY CONTROL PROTECTION SYSTEM AND CONTROL PROTECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2024/045652
Kind Code:
A1
Abstract:
The present application discloses a power supply control protection system and a control protection method. The system comprises: a switching power supply, a main controller, an auxiliary controller, a sampling circuit and an energy storage element, wherein the switching power supply is used for supplying power to the sampling circuit, the main controller and the auxiliary controller; the energy storage element is used for providing an auxiliary power supply for the sampling circuit, the main controller and the auxiliary controller; the sampling circuit has a self-checking function and sends a self-checking result to at least one of the main controller and the auxiliary controller; when the self-checking result indicates that the sampling circuit is normal, the main controller or the auxiliary controller controls a converter to work; and the main controller and the auxiliary controller communicate with each other. When a switching power supply cannot normally supply power, an energy storage element supplies power to a controller and a sampling circuit, such that the normal sampling and control reliability of a power supply system is ensured, thereby ensuring that a fault isolation circuit can reliably operate. The sampling circuit has a self-checking function, such that faults of the sampling circuit are found in a timely manner, and thus it is not necessary to provide two sampling circuits, thereby saving on the cost.
Inventors:
XU ANAN (CN)
WANG WUBO (CN)
ZHANG BING (CN)
WANG CHANGYOU (CN)
WANG WUBO (CN)
ZHANG BING (CN)
WANG CHANGYOU (CN)
Application Number:
PCT/CN2023/090208
Publication Date:
March 07, 2024
Filing Date:
April 24, 2023
Export Citation:
Assignee:
SUNGROW POWER SUPPLY CO LTD (CN)
International Classes:
H02H7/00; H02H7/20; H02J7/00
Foreign References:
| CN113725847A | 2021-11-30 | |||
| CN102709994A | 2012-10-03 | |||
| CN113131546A | 2021-07-16 | |||
| CN115459216A | 2022-12-09 | |||
| CN102255332A | 2011-11-23 | |||
| US20220166211A1 | 2022-05-26 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW CO., LTD. (CN)
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