Time-to-Frequency Domain SMPS Model for Harmonic Estimation: Methodology

 

G. Malagon-Carvajal, J. Bello-Pena, G. Ordonez-Plata, C. Duarte

 

2017/04/25

Abstract

The amount of home appliances based on Switch Mode Power Supply (SMPS) systems has increased over the last years. Thus, the harmonic analysis of these loads is useful for the assessment of current distortion in low voltage distribution systems. However, an assessment considering the diversity and attenuation effects represents a challenge on harmonic modeling.
This paper proposes a method (T2FDM) to transform SMPS Time Domain Models (TDM) into Frequency Domain Models (FDM) in order to estimate the input current waveforms when the amplitude, phase angle and distortion of the supply voltage varies (e.g., voltage regulation) around some operating point. The T2FDM provides the Admittance matrix, which is suitable to assess the impact of household loads with lower computational cost. The method is based on the use of Polarplots Fingerprints computed from TDMs and not from a large set of measurements. The results from T2FDM, FDM and TDM are compared against laboratory measurements via the computation of error performance metrics. The study shows that the methodology is appropriate to compute accurate and efficient FDMs from a TDM and a small set of measurements.

Published in: Renewable Energy & Power Quality Journal (RE&PQJ, Nº. 15)
Pages: 825-830 Date of Publication: 2017/04/25
ISSN: 2172-038X Date of Current Version:

REF: 485-17

Issue Date: April 2017
DOI:10.24084/repqj15.485 Publisher: EA4EPQ

Authors and affiliations

AG. Malagon-Carvajal, J. Bello-Pena, G. Ordonez-Plata, C. Duarte
Department of Electric, Electronic and Telecommunications Engineering. Universidad Industrial de Santander (UIS)
Bucaramanga, (Colombia)

Key word

Time Domain Models, Frequency Domain Models, Harmonic Attenuation-Diversity, Admittance Matrix, SMPS.

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