Title:
FAULT PROTECTION DEVICE AND PHOTOVOLTAIC POWER GENERATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/156488
Kind Code:
A1
Abstract:
The present application relates to a fault protection device and a photovoltaic power generation system. The photovoltaic power generation system comprises: a capacitor bridge arm, the capacitor bridge arm comprising a positive electrode output port, a negative electrode output port, and a reference output port between the positive electrode output port and the negative electrode output port; an inverter bridge arm, the inverter bridge arm comprising a positive electrode input port, a negative electrode input port, and a reference input port between the positive electrode input port and the negative electrode input port, the positive electrode input port being connected to the positive electrode output port, and the negative electrode input port being connected to the negative electrode output port; and a fault protection device, wherein the reference input port is connected to the reference output port by means of the fault protection device, the fault protection device is shut down according to the size of or a change in voltage or the size of or a change in current between the positive electrode input port or the negative electrode input port and the reference input port.
Inventors:
CHEN DONG (CN)
SHI LEI (CN)
WANG JUN (CN)
SHI LEI (CN)
WANG JUN (CN)
Application Number:
PCT/CN2021/141683
Publication Date:
July 28, 2022
Filing Date:
December 27, 2021
Export Citation:
Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02H7/122
Foreign References:
| JP2008067566A | 2008-03-21 | |||
| CN204290775U | 2015-04-22 | |||
| CN111193415A | 2020-05-22 | |||
| CN106291162A | 2017-01-04 |
Other References:
See also references of EP 4060846A4
Download PDF: