Sign inSubmit
Tips: “quotes” for a phrase · author:Lee · a DOI goes straight to its article

13 results for “power quality improvement”
Set a search alert
Research ArticleOpen accessPhrase in the titlePower Quality Improvement Using a Sliding Mode Control of a Series Active FilterTheerayuth ChatchanayuenyongA sliding mode controller (SMC) for a three-phase series active filter was proposed to compensate voltage unbalances, suppress voltage sags and swells and hence improve the power quality of a three-phase ac system. The voltage unbalance compensation and regulation is only based on the positive sequence component decomposition of the supply voltage that is then adjusted to a rated value … …American Journal of Applied Sciences, Vol. 5, Issue 8 · 31 Aug 2008 · 6,584 accessesView PDFCite
Research ArticleOpen accessPhrase in the titlePower Quality Improvement Using DVRC. Benachaiba, B. FerdiVoltage sags and swells in the medium and low voltage distribution grid are considered to be the most frequent type of power quality problems based on recent power quality studies. Their impact on sensitive loads is severe. The impact ranges from load disruptions to substantial economic losses up to millions of dollars. Different solutions have been developed to protect sensitive … …American Journal of Applied Sciences, Vol. 6, Issue 3 · 31 Mar 2009 · 8,040 accessesView PDFCite
Research ArticleOpen accessIn the keywordsA Fast Series Active Filter using Sliding Mode Control to Correct and Regulate Unbalance Voltage in Three-Phase SystemTheerayuth ChatchanayuenyongProblem statement: A Sliding Mode Controller (SMC) with fast reference voltage generation to correct and regulate unbalance voltage in three-phase system was proposed. Approach: The compensation algorithm was not based on three-symmetrical component decomposition so the controller can yield a fast response that was essential in such a critical real time control work. The reference voltages were fed to the … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 2 · 30 Jun 2009 · 7,221 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Beneficial Effect of Asiaticoside on Experimental Neuropathy in Diabetic RatsChonlathip Thipkaew, Jintanaporn Wattanathorn, Supaporn MuchimapuraThough diabetic neuropathy produces high impact on quality of life, annual cost and morbidities, the therapeutic efficacy is still not in a satisfaction level. Based on the crucial role of oxidative stress on the pathophysiology of diabetic neuropathy and the improvement of this condition induced by antioxidant, we hypothesized that asiaticoside, a substance possessing antioxidant activity, could provide beneficial effect. … …American Journal of Applied Sciences, Vol. 9, Issue 11 · 31 Aug 2012 · 7,051 accessesView PDFCite
Research ArticleOpen accessIn the abstractPower Quality Analysis in 6 MW Wind Turbine Using Static Synchronous CompensatorR. Valarmathi, A. ChilambuchelvanProblem statement: An inherent problem with wind turbine power generation systems is the low power quality due to intermittent power generation in these systems. This not only affects the power generation but also the grid it is connected to. Approach: In this study a configuration consisting of a 6MW Wind Farm based on conventional Fixed Speed Induction Generator is analyzed. … …American Journal of Applied Sciences, Vol. 9, Issue 1 · 23 Nov 2011 · 7,232 accessesView PDFCite
Research ArticleOpen accessIn the abstractVoltage Swells Improvement in Low Voltage Network Using Dynamic Voltage RestorerR. Omar, N.A. Rahim, A. AhmadProblem statement: Voltage disturbances are the most common power quality problem due to the increased use of a large numbers of sophisticated electronic equipment in industrial distribution system. The voltage disturbances such as voltage sags, swells, harmonics, unbalance and flickers. High quality in the power supply is needed, since failures due to such disturbances usually have a high impact on … …American Journal of Applied Sciences, Vol. 8, Issue 1 · 31 Jan 2011 · 7,376 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Policy-Based Admission Control Scheme for Voice over IP NetworksSami Alwakeel, Agung PrasetijoProblem statement: In Voice Over IP (VOIP) network, when more calls are admitted to the network, more voice packet traffic is created. Since bandwidth is always limited, this may result network congestion and/or may affect voice quality. Thus, we needed a mechanism for improving the Quality of Service (QoS) by controlling VOIP calls admission. Approach: Given a specified bandwidth and … …Journal of Computer Science, Vol. 5, Issue 11 · 30 Nov 2009 · 6,609 accessesView PDFCite
Research ArticleOpen accessIn the abstractImprovement on the Design of a Cabinet Grain DryerAdzimah K. Stephen, Seckley EmmanuelProblem statement: Grains are routinely seen dumped in villages and major cities during the peak of harvest. Therefore it is necessary that these grains are properly dried and stored to ensure availability and wholesomeness throughout the year. Advancements have taken place in the practice of drying since the first world war. Manufacturing methods have greatly improved production rate and the … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 1 · 31 Mar 2009 · 8,720 accessesView PDFCite