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Modeling and simulation are powerful tools to design power distribution systems made up by multiple converters and loads, such as the system of the more-electric-aircraft. However, the system designer usually has no access to detailed data of the power converters, due to confidentiality of manufacturers. Therefore, a behavioral black-box modeling approach is necessary. These models can be used to evaluate the response of power electronics systems which are composed of commercial converters, since they can be fully parameterized from the actual converter response and only reproduce the signals required for a system-level analysis: input-output voltage and currents. In this paper a behavioral black-box modeling method of three-phase DC-AC converters is proposed. The identification of the model is based on the analysis of the converter transient response, which is obtained by means of a set of simple experiments and easily usable fitting algorithms.