The grey box model combines some features from both, black box model and white box model, when parts of components are known or the relationship between physical elements and equivalent circuit is investigated.

The white box model of power converters is suitable when all the inner components are known, which can be quite difficult due to the complex nature of the power converter. The equivalent circuit of the black box model is built by measuring the stimulus/response of the power converter.ĭifferent modeling methods of power converter could be applied in different circumstances. To successfully implement a black box model of a power converter, the equivalent circuit of the converter is assumed a-priori, with the assumption that this equivalent circuit remains constant under different operating conditions. This black box model of power converter could be a tool for filter design of a system integrated with power converters. The type of black box model of power converter is chosen based on the goal of modeling. There are two types of black box model of power converter - when the model includes the load, it is called terminated model, otherwise un-terminated model.

The black box model of power converter also called behavior model, is a method of system identification to represent the characteristics of power converter, that is regarded as a black box.

Black box electronics