Computer Simulation of Physical Processes in an Electric Circuit with Nonlinear Inductance

Abstract

In modern society, the use of the latest technologies in any field of human activity is becoming increasingly important. The use of computerized equipment in laboratory classes for technical disciplines allows both to increase interest in learning the subject and to enhance the cognitive activity of the student. In most electrical devices with nonlinear elements, not only do phenomena occur that are fundamentally impossible in linear circuits, but also the principle of device operation is based on the circuit nonlinearity. The paper presents a computerized system that allows you to study the processes occurring in the AC circuit in the presence of a nonlinear element. As a result of the study, the user interface of a computerized complex, which reproduces an alternating current circuit with nonlinear inductance was developed. The universal LabVIEW package was used to build the mnemonic diagram, which contains a library of elements designed for the development of physical devices virtual interfaces and laboratory research facilities. The elements parameters that make up the circuit can be changed. The nonlinearity of the inductor is given in the form of an approximation dependence. As a result, on the basis of the created complex, with the help of computer modeling, the influence of nonlinearity degree of the element characteristic on the level of non-sinusoidality of the signal was determined. The developed complex can be used for laboratory workshops in the study of “Nonlinear AC circuits” in classes on “Electrical Engineering.”