DroopVerhalten

DroopVerhalten, also known as droop effect or droop, refers to a phenomenon observed in power electronics, particularly in voltage source inverters (VSIs) used in renewable energy systems and electric vehicles. It is characterized by a decrease in the output voltage of the inverter as the load current increases. This behavior is primarily due to the finite output impedance of the inverter, which causes a voltage drop across this impedance as current flows through it.

The droop effect is typically implemented intentionally in parallel-connected inverters to share the load current proportionally among them. This is achieved by adjusting the inverter's output voltage in response to changes in the load current. The amount of voltage droop is determined by the droop coefficient, which is the ratio of the voltage change to the current change. A higher droop coefficient results in a greater voltage droop for a given current change.

While droop control is essential for achieving proper load sharing in parallel inverters, it can also lead to stability issues if not properly managed. This is because the droop effect can cause a decrease in the system voltage, which can, in turn, affect the performance of other connected devices. To mitigate these issues, advanced control strategies and communication techniques are often employed to enhance the stability and performance of droop-controlled systems.