Influence of data resolution in nonlinear loads model for harmonics prediction
| Autor: | Eulalia Griful, M. Lamich, Montserrat Corbalan, Josep Balcells |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica, Universitat Politècnica de Catalunya. Departament d'Estadística i Investigació Operativa, Universitat Politècnica de Catalunya. TIEG-P - Terrassa Industrial Electronics Group -Power, Universitat Politècnica de Catalunya. L'AIRE - Laboratori Aeronàutic i Industrial de Recerca i Estudis |
| Předmět: |
Computer science
020209 energy 02 engineering and technology Topology Power harmonic filters Harmonic analysis Mathematical model Control theory Power electronics 0202 electrical engineering electronic engineering information engineering Training Point (geometry) Electrical impedance Voltage-controlled oscillators Load modeling Enginyeria electrònica [Àrees temàtiques de la UPC] Data models Anàlisi harmònica Function (mathematics) Oscil·ladors de voltatge controlat Nonlinear system Three-phase Integrated circuit modeling Harmonics Harmonic Power quality Electrònica de potència Voltage |
| Zdroj: | Recercat. Dipósit de la Recerca de Catalunya instname UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) IECON |
| Popis: | This paper describes the influence of data resolution in the agreement of models to predict harmonics generated by nonlinear loads (NLL), basically formed by single phase and three phase rectifiers, eventually combined with linear loads. We assume that the network supplying the NLL has significant impedances and that it is disturbed by other parallel, random and unknown neighbor loads, sharing part of the supply system. The aim of building NLL models is to make predictions on the amount and flow paths of harmonic currents generated by such NLL in case of using parallel filters. In this paper, the models are obtained from sets of (V,I) data taken at a certain point, called measuring point (MP) and are valid to predict the NLL behavior when random known or unknown parallel loads are connected upstream of this point. The technique used to obtain the models studied here is based on Multivariate Multiple Outputs Regression (MMOR) and will not be described in detail in this paper. This method allows obtaining a set of equations giving the current harmonics as a function of voltage harmonics observed at the measuring point (MP). The accordance between model and the experimental results is very dependent on the resolution and accuracy of V and I measurements at the MP and is the core matter of this paper. |
| Databáze: | OpenAIRE |
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