Digital modeling of electrical and electronic devices

In connection with the introduction of computer technology into the educational process, the need arises to develop numerical simulation methods. This is especially relevant in technical colleges when studying the dynamic properties of technical systems described by high-order differential equations. To solve such problems, even before the introduction of computer technology, various graphical methods of engineering calculation and analysis were developed, but these methods are cumbersome and inaccurate. At present, due to the widespread introduction of digital substations in the power industry, there is a need for digital modeling of electrical and electronic devices. The basic mathematical model of electromechanical and electronic devices is their equivalent circuit. Therefore, for the convenience of modeling electrical circuits, an operator-discrete method has been developed that allows one to obtain difference equations directly according to the circuit. This method can be used in the modernization of analog control systems, since it makes it possible to obtain digital filter circuits or digital signal processing algorithms on universal computers using electrical circuits of analog regulators. On the basis of the conducted research of modeling methods, conclusions for practical calculations are obtained.