[Zurück]

K. Edelmoser, F. Himmelstoß:
"Control Strategy of a Solar Power Inverter (Analysis Of A Seventh Order System - II)";
Vortrag: IEEE International Conference on Electronics, Circuits and Systems ICECS, Dubrovnik, Croatia; 09.09.2002 - 11.09.2002; in: "Proceedings of the 9ht International IEEE Conference on Electronics, Circuits, and Systems, ICECS 2002", Vol. 3 (2002), S. 963 - 966.

In conventional mains-coupled inverter topologies a multi- stage filter is used for grid coupling and to fulfill the EMI-requirements. This filter is also unavoidable to form the required output characteristics (current source) of the inverter. The resulting structure leads to a high system order which is difficult to control and problematic to realize due to unknown mains impedance behavior. In case of the realization here presented, two dedicated band-stop filter stages were used to enhance the output characteristics. The matching filter used here in conjunction with an optimal controller can overcome most of the known limitations. In this paper it is shown that the optimal adaptation of the suggested structure leads to a simple, insensitive, easy to use and very robust solution.