Controller, power inverter, photovoltaic power supply system, and method for controlling deactivation of at least one photovoltaic module

摘要

Various embodiments may provide a controller for photovoltaic power supply, configured to be connected with one or more photovoltaic modules and configured to be connected with an AC grid terminal, wherein the controller is configured to monitor the status of the AC grid power and to generate a signal for deactivation of the photovoltaic modules if the AC power is off, wherein the controller is further configured to generate the signal such that it controls the activation of the at least one photovoltaic module with an active signal having a non-zero signal voltage level and such that it controls the deactivation of the at least one photovoltaic module with an inactive signal, wherein the deactivation of the at least one photovoltaic module results in that the connections between a plurality of photovoltaic modules are interrupted or that the photovoltaic modules are short circuited.