Shutdown Apparatus For Photovoltaic Module

A shutdown apparatus for a photovoltaic module, wherein the shutdown apparatus is configured to realize an output shutdown function of a connected photovoltaic module, and comprises:

• a controller;
• and
• a combination of execution devices, wherein the combination of execution devices comprises a first switch, a second switch, a first driving unit, a second driving unit, an input voltage detecting unit, and an output voltage detecting unit;
• wherein the first switch is arranged on a positive cable or a negative cable of the photovoltaic module;
• the second switch is arranged between the positive cable and the negative cable of the photovoltaic module;
• the input voltage detecting module is configured to detect an input voltage of the combination of execution devices;
• the output voltage detecting module is configured to detect an output voltage of the combination of execution devices;
• and
• the controller is configured to control the first switch to be switched on by the first driving unit in a normal power generation state, and control the first switch to be switched off by the first driving unit in a shutdown state;
• determine, after controlling the first switch to be switched off, whether a short circuit fault occurs in the first switch based on the input voltage and the output voltage of the combination of execution devices;
• and control the second switch to be switched on by the second driving unit if the short circuit fault occurs in the first switch.