calculation of transient and periodic processes

Process modelling in nonlinear electric circuits and devices using the differential harmonic method

The article presents the basic principles of a differential harmonic method for the numerical calculation of transient and steady-state periodic processes in nonlinear electric circuits and devices with vibrations caused by periodic external forces. There is the diagram of conversion of differential equations, describing electric circuits and devices and operating with their instant variables, to differential equations operating with the harmonic amplitude vectors, given in the article.