Bildung eines dreiphasigen Inselnetzes durch unabhängige Wechselrichter im Parallelbetrieb

In this dissertation a control for a three phase inverter, acting as a voltage source, is presented. The inverter is able to work in parallel with a constant-voltage constant-frequency system, as well as with other inverters or also in standalone. Load sharing is achieved with different power sources even under unbalanced conditions. By using droops for the control of real and reactive power the inverter can contribute to the frequency and voltage stability of the mains.