Solar module, operating method for solar module, and photovoltaic device

Abstract

A solar module (1) is described, wherein a short-circuit switch (12) and a control unit (13) are respectively connected in parallel with at least a part of the solar module (1), wherein the solar module (1) provides the control The unit (13) is powered and can be connected in a string with other solar modules via the first and second module connections (14, 15). The control unit (13) is configured to actuate the solar module (1) as a function of the insulation voltage drop between the ground potential reference connection (16) of the solar module (1) and one of the module connections (14, 15). Described short-circuit switch (12). The solar module (1) can be part of a photovoltaic installation. An operating method for the solar module (1) is likewise described.

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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