Invention Grant
- Patent Title: Shutdown apparatus for photovoltaic module
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Application No.: US16540901Application Date: 2019-08-14
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Publication No.: US11043802B2Publication Date: 2021-06-22
- Inventor: Zongjun Yang , Yanfei Yu , Hua Ni
- Applicant: SUNGROW POWER SUPPLY CO., LTD.
- Applicant Address: CN Anhui
- Assignee: SUNGROW POWER SUPPLY CO., LTD.
- Current Assignee: SUNGROW POWER SUPPLY CO., LTD.
- Current Assignee Address: CN Anhui
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: CN201811082182.6 20180917
- Main IPC: H02H7/20
- IPC: H02H7/20 ; H02S50/00 ; H02S40/36 ; G01R31/50

Abstract:
A shutdown apparatus for a photovoltaic module is provided. Only one first switch is connected in series in an output circuit of the photovoltaic module, and a controller controls the first switch to be switched on in a normal power generation state and controls the first switch to be switched off in a shutdown state. If a short circuit fault occurs in the first switch, the controller controls a second switch connected in parallel with the photovoltaic module to be switched on, thereby causing the output of the photovoltaic module short-circuited and ensuring a reliable shutdown. In addition, the second switch is in the shutdown state when the photovoltaic module normally provides output, and the second switch does not cause losses to the output of the photovoltaic module, such that it is not necessary to select a device with a low impedance.
Public/Granted literature
- US20200091706A1 Shutdown Apparatus For Photovoltaic Module Public/Granted day:2020-03-19
Information query
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