Simulation Analysis of a Single-Phase AC Circuit with a Nonlinear Load

The IEEE 1459 standard states that: “There is a need to quantify correctly the distortions caused by nonlinear and parametric loads …” paper undertakes this problem. article includes an analysis of selected steady-state properties single-phase AC circuit containing series connection resistance, inductance, element described signum function. supplied from sinusoidal voltage source. mathematical model using dimensionless variables. Based on harmonic balance, description for fundamental remaining harmonics was separated. On basis relationship between current waveforms, solution all harmonics, content coefficients, elements equivalent scheme load, were estimated symbolically. equations, measurement systems developed in Simulink, as well program that controls these models MATLAB determines characteristics model. presents function load amplitude resistance. conclusions drawn studies have practical significance.