Procedure for the synthesis of models of electrotechnical complexes

Abstract

A procedure for developing visual mathematical models of multichannel electrotechnical complexes which reduces time of synthesis of mathematical models and error likelihood was developed. The procedure includes two stages: representation of an electrotechnical complex in a form of a structure of the energy path and its transformation into a visual-block model. Representation of the system in a form of a structure of energy paths is based on the principle of system decomposition proposed by the authors which involves definition of six types of structural elements in the power conversion structure: source and receiver, distributor and consolidator, converter and energy storage. The principle of decomposition allows one to create a library of models of subblock, components of the visual-block model and introduce unification of the subblock designation. To illustrate the proposed procedure, an example of building a visual model of a DC drive for a rolling mill roll and its implementation on a personal computer were considered. A fragment of the library of components of the visual-block model with a mathematical description of the components included in the considered example was given. The introduced unification creates conditions for effective work of developers in elaboration of this procedure of model synthesis in terms of formation of a library of subblocs. In addition, unification of the form of representation of the library of components creates conditions for effective communication of researchers and developers within the frames of complex integrated projects. The model at the stage of developing structure of energy paths is a convenient tool for visualizing system operation and contributes to understanding of its functioning. The form of the obtained mathematical model is convenient for its further transformation into a model in variables of state which, in turn, is the starting point for synthesis of control systems