Behavioral modeling of current controled inverters for large signal analysis

In last years, the number of power systems with multiple converters and loads is increasing. Simulation tools are usually needed in order to carry out the analysis of the stability and the large signal response of these power systems. When the power systems are composed of commercial converters whose internal structure is unknown, the use of behavioral models is necessary in order to carry out the simulations. That kind of models can be characterized by means of manufacturer datasheets and/or experimental measurements, carried out over the converters. Therefore, a detailed knowledge of the converter internal structure is not necessary. In this paper a new behavioral modeling of current controlled inverters is presented. The proposed approach allows modeling the large signal response of the converter. The required simulation time is optimized and the characterization procedure is easy, due to the model simplicity.