Simplified Harmonic Model for Full Wave Diode Rectifier Circuits

Abstract

Original scientific paperThis paper proposes a simplified equivalent circuit model that can be used in the presentation of characteristic harmonic components generated by full wave diode rectifiers. In the model, the load current is assumed to be constant as in many industrial applications. In order to obtain an accurate and exact analysis, the proposed model involves both current harmonics on AC side and voltage harmonics on DC side of the full wave rectifiers. The model depends on Fourier series expansion for the load voltage and the source current waveforms. Key words: Harmonic Model, Equivalent Circuit, Full Wave RectifierPojednostavljeni harmonički model za punovalni ispravljač s diodama. U radu je predložen pojednostavljeni ekvivalentni model električnog kruga koji se može koristiti za prikaz karakterističnih harmoničkih komponenata koje generira punovalni ispravljač. Pretpostavka modela je konstantan iznos struje tereta, što ječesti slučaj u industrijskim primjenama. Kako bi se postigla vjerodostojnost modela, predloženi model uključuje harmonike struje na AC strani kao i harmonike napone na DC strani punovalnog ispravljača. Model ovisi o razvoju Fourierovog reda za valne oblike napona tereta i struje izvora Ključne riječi: harmonički model, ekvivalentni električni krug, punovalni ispravljač

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“…Circuitbased models have been used to assess the harmonic injections from nonlinear loads in several researcher works. Such as in [11]- [14] modelling the equivalent circuit of full wave rectifiers in MATLAB/Simulink to characterize harmonic components. In [15], [16] using a simplified model of SMPS to study harmonics propagation and interaction among end-user loads in PSCAD and [17] using estimated equivalent parameter values of SMPS in modern household appliances for aggregated harmonic analysis.…”