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[120950] Artykuł: Simulation Analysis of a Single-Phase AC Circuit with a Nonlinear LoadCzasopismo: Energies Strony: 16ISSN: 1996-1073 Opublikowano: Styczeń 2023 Autorzy / Redaktorzy / Twórcy Grupa MNiSW: Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A) Punkty MNiSW: 140 DOI Keywords: nonlinear circuit  equivalent circuit diagram  harmonics  reactive power  IEEE 1459-2010  modelling  simulation  |
The IEEE 1459 standard states that “There is a need to quantify correctly the distortions caused by the nonlinear and parametric loads …”.
The paper undertakes this problem. The article includes an analysis of selected steady-state properties of a single-phase AC circuit
containing a series connection of a resistance, an inductance, a nonlinear element described by a signum function. The circuit is
supplied from a sinusoidal voltage source. The mathematical model of this circuit is described using dimensionless variables.
Based on the harmonic balance, a description of the circuit for the fundamental harmonic and the circuit for the remaining harmonics was separated.
On the basis of the relationship between the current and voltage waveforms, the solution for all harmonics, the harmonic content
coefficients and the elements of the equivalent scheme of the nonlinear load were estimated symbolically.
Based on the circuit equations, a circuit model and measurement systems were developed in Simulink, as well as a program that
controls these models in MATLAB and determines the characteristics of the circuit model.
The paper presents selected circuit characteristics as a function of load voltage amplitude and circuit resistance.
The conclusions drawn from these studies have practical significance