THE NONLINEAR ELECTRIC CIRCUITS ANALYSIS WITH THE USAGE OF INSTANTANEOUS ADMITTANCE AND RESISTANCE COMPONENTS

The method for the nonlinear electric circuit analysis with the usage of orthogonal instantaneous admittance and resistance components was proposed. Mechanism of orthogonal instantaneous admittance components formation of nonlinear electric circuit was shown. Analytical equations of the orthogonal instantaneous admittance and resistance components were presented and analyzed. The analysis of instantaneous admittance and resistance components balance equations was carried out, also current harmonic components of the nonlinear electric circuit have been determined. Researched electric circuit consists of the serially connected active linear and nonlinear resistance. The accuracy and the adequacy of the developed method were proved. Numerical values of current harmonic components, calculated with the offered method for the nonlinear electric circuit analysis, were compared with the values, received with the researched electric circuit mathematical simulation. The universality and the possibility to evaluate the impact of the circuit parameters on the current’s spectrum composition can be add to the main advantages of the offered method.