A Novel Approach to the Simulation of Power Quality Disturbances in Electric Power Systems

Pavas, Andres; Torres, Horacio; Urrutia, Diego; Cajamarca, G.; Gallego, Luis; Buitrago, L.

doi:10.1109/tdcla.2006.311423

Cited by 1 publication

(2 citation statements)

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“…The power quality of these utilities is mainly related to the voltage and current waveforms that should be sinusoidal and in phase each other. However, the power quality can be affected by the influence of many disturbances, these disturbances are found under different forms (harmonics, sags, unbalance, flickers and swells) [1]- [2].…”

Section: Introductionmentioning

confidence: 99%

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An Improved Double Fuzzy PI Controller For Shunt Active Power Filter DC Bus Regulation

Elhaj¹,

Sedra²,

Jarou³

et al. 2015

IJPEDS

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This paper targets to demonstrate the importance of the choice of the algorithm references detection to be applied with a double fuzzy PI corrector (DFPI) for the control and the regulation of a shunt active power filter (SAPF) DC bus voltage. In a previous work, the synchronous reference frame (SRF) algorithm was applied and gave satisfactory results. In the present paper, the SRF is compared to the positive sequence of the fundamental of the source voltage algorithm (PSF) which offered better results regarding the power quality of the considered main utility feeding a variable DC RL load throughout a diode bridge. The results were carried out using computer simulation performed under MATLAB/Simulink environment. To make the obtained results more convenient, a comparison between the couples (SRF, PI), (PSF, PI), (SRF, DFPI), (PSF, DFPI) is added to prove the effectiveness of the couple (PSF, DFPI) in satisfying the compromise between a good regulation of the SAPF DC bus voltage and a good quality of filtering resulting in an improved quality of power. Keyword: Harmonics SAPF SRF & PSF algorithms DFPI DC voltage controller ComparisonsCopyright © 2015 Institute of Advanced Engineering and Science.All rights reserved. Corresponding Author:Nabil elhaj, Laboratory of High Energies, Engineering Sciences and Reactors, Ibn Tofail University, Kenitra, Morocco. Email: Nabilmaill@yahoo.fr INTRODUCTIONRecently, improving the quality of energy in electrical distribution power utilities becomes a subject of great interest. The power quality of these utilities is mainly related to the voltage and current waveforms that should be sinusoidal and in phase each other. However, the power quality can be affected by the influence of many disturbances, these disturbances are found under different forms (harmonics, sags, unbalance, flickers and swellsTo minimize the effect of disturbances on power quality several solutions are proposed as effective remediation namely active power filters (APFs) based on voltage source (VSIs) or current source (CSIs) inverters that can be connected in parallel, series or both of them between the power utility and the disturbing load [3]- [4]. The principle of these topologies is to provide the opposite disturbance that counters the existing disturbance, so that it can't attain the power utility.To be effective in its operation the active power filtering system needs to be well supplied with a sufficient and non fluctuating DC voltage in its DC bus terminals and well controlled to provide the desired output signals. To achieve these conditions, the control circuit is designed on the basis of three main blocks: the algorithm that detects the reference signals, the corrector that compensates the fluctuations of the DC bus voltage and the modulator that generates the switching signals to be launched to the inverter switches gates. These three blocks work together to output the compensating signals. Thus, they must be carefully conceived

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Section: Introductionmentioning

confidence: 99%

“…A resistor R dc is added to the system which is connected in parallel to the capacitor C dc feeding the SAPF through the regulating loop. The role of this resistor is to minimize V dc ripples by controlling the constant time  as explained in (1).…”

Section: Introductionmentioning

confidence: 99%