# Multivariable polynomial fitting of controlled single-phase nonlinear load of input current total harmonic distortion

Multivariable polynomial fitting of controlled single-phase nonlinear load of input current total... AbstractThe power systems usually include a number of nonlinear receivers. Nonlinear receivers are the source of disturbances generated to the power system in the form of higher harmonics. The level of these disturbances describes the total harmonic distortion coefficient THD. Its value depends on many factors. One of them are the deformation and change in RMS value of supply voltage. A modern LED luminaire is a nonlinear receiver as well. The paper presents the results of the analysis of the influence of change in RMS value of supply voltage and the level of dimming of the tested luminaire on the value of the current THD. The analysis was made using a mathematical model based on multivariable polynomial fitting. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Open Physics de Gruyter

# Multivariable polynomial fitting of controlled single-phase nonlinear load of input current total harmonic distortion

Open Physics, Volume 16 (1): 6 – Apr 18, 2018
6 pages

/lp/degruyter/multivariable-polynomial-fitting-of-controlled-single-phase-nonlinear-HENxgqej00
Publisher
de Gruyter
ISSN
2391-5471
eISSN
2391-5471
D.O.I.
10.1515/phys-2018-0021
Publisher site
See Article on Publisher Site

### Abstract

AbstractThe power systems usually include a number of nonlinear receivers. Nonlinear receivers are the source of disturbances generated to the power system in the form of higher harmonics. The level of these disturbances describes the total harmonic distortion coefficient THD. Its value depends on many factors. One of them are the deformation and change in RMS value of supply voltage. A modern LED luminaire is a nonlinear receiver as well. The paper presents the results of the analysis of the influence of change in RMS value of supply voltage and the level of dimming of the tested luminaire on the value of the current THD. The analysis was made using a mathematical model based on multivariable polynomial fitting.

### Journal

Open Physicsde Gruyter

Published: Apr 18, 2018

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