Solar module, operating method for a solar module, and photovoltaic system

Abstract

The invention discloses a solar module, an operating method for a solar module, and a photovoltaic system. The invention relates to a solar module (1), wherein a short-circuit switch (12) and a control unit (13) are each connected in parallel with at least part of the solar module (1), wherein the solar module (1) electrically supplies the control unit (13) and can be connected to further solar modules to form a string by means of a first and a second module connection (14, 15). The control unit (13) is designed to actuate the short-circuit switch (12) in accordance with a dropping insulationvoltage between a ground potential reference connection (16) of the solar module (1) and one of the module connections (14, 15). The solar module (1) can be part of a photovoltaic system. The invention further relate to an operating method for the solar module (1).

Description

technical field [0001] The invention relates to a solar module, an operating method for a solar module and a photovoltaic system (PV system) having a series connection of solar modules. Background technique [0002] In order to generate electricity cost-effectively with the aid of PV modules, the PV modules are connected in strings of always greater length. In order to be able to control the voltage of the strings which increases with the string length, a safety circuit is required. Thus, for example, as usual and described in document EP 2 296 244 A1, the long string is preferably connected to ground potential in the middle of the string, and the current flowing through the ground connection is monitored as a fault current. If the current exceeds a limit value, a ground fault can be assumed and the plant can be put into a safe state, for example by disconnecting the PV modules from each other and / or by disconnecting the string from the connected inverter. In this case, to...

AI Technical Summary

Problems solved by technology

However, this solution entails increased installation effort by providing additional short-circuit paths and their handling

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