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K. Edelmoser, F. Himmelstoß:
"Control Strategy of a Solar Power Inverter (Analysis of an Advanced Third Order System)";
Vortrag: 5th IEEE International Conference on Circuits, Systems, Communications and Computers, Rethymnon, Crete; 07.07.2002 - 14.07.2002; in: "Proceedings of the 5th IEEE International Conference on Circuits, Systems, Communications and Computers CSCC '02", CD-ROM (2002), ISBN: 960-8052-63-7; S. 1 - 6.

In mains-coupled power inverter applications a reactive filter is required to interface the generator to the power grid. Conventional structures of power inverter filters, required for grid coupling operation and to fulfill EMI requirements, lead to a system which is difficult to control (because of its high system order) and problematic to realize due to unknown mains impedance behavior. The simplest structure to fulfill the requirements is a third order system. To reach the goal of an always stable and robust system here a modified third order structure in conjunction with a special compensator is used to overcome the problem of the low damped system. The structure is analyzed in detail, a controller solution is developed and some realization hints are given. The presented concept is well suited for mains coupled power inverters, especially solar inverter applications.