Search
1227 articles for “Phases”
-
Application of AI Techniques in Three-phase Shunt Active Power Filter in Unbalanced and Distorted Supply Conditions
Abstract: This paper deals with a new improved model of the shunt active power filter having the control scheme using Artificial Neural Networks (ANN) technique in unbalanced and distorted supply system. In this paper, three soft computing techniques viz; Genetic algorithm, Fuzz logic, neural network are used. The simulation results using MATLAB model confirm that combination of these algorithms together create an optimum system, which clearly proves the effectiveness of the …
Published in Journal of Power Electronics and Power Systems · Vol. 3, Issue 3, 2013 · pp. 15–26 Read article
-
Design Parameters of Three-phase Self-excited Induction Generator for Desired Performance under Unbalanced Operations
Abstract: Self-excited induction generators are widely used for power generation using wind energy in remote and windy locations. However, the load in such generating units may become unbalance and sometimes the excitation capacitance may be unbalance due to aging effect or manufacturing tolerance. All this reflect a strong need for the analysis of such machines under unbalanced operations. In this paper, proposed model as presented has been framed in order to …
Published in Journal of Power Electronics and Power Systems · Vol. 4, Issue 1, 2014 · pp. 1–12 Read article
-
A New Description of Multi-phase Flow Behavior at Boundary Layers of Low-permeability Porous Media
Abstract: At present, the recovery factor of low permeability oilfield in China is only about 20%, which is enormously lower than the recovery factor index of 60% by using water-chemical flooding in medium and high permeability layer. There are a lot of causes that resulted in low recovery factor, among them that the complex pore structure, tiny throat, large pore throat ratio and non-Darcy flow in low-permeability oil layer are the …
Published in Journal of Petroleum Engineering & Technology · Vol. 3, Issue 1, 2013 · pp. 1–7 Read article
-
Numerical study of the impact of surfactant/polymer flooding on different reservoir wetting phases.
Abstract: Production of oil and gas by primary drive mechanism has always remained unsatisfactory since a greater percentage of the oil remains in the reservoir. Across the industry and academia various enhanced oil recovery interventions are been sought after to help recover more and more hydrocarbons from the reservoir. A simulation study is conducted using the UTCHEM simulator to help understand the mechanism that affect the various wetting characteristics of the …
Published in Journal of Petroleum Engineering & Technology · Vol. 9, Issue 1, 2019 · pp. 14–25 Read article
-
Single Phase Transformerless Grid Tied PV Application Along with Battery Energy Management System
Abstract: A spectacular increment of interest in photovoltaic (PV) energy systems.There has been significant drop in the cost of PV modules somewhat recently, thus the lessening of assembling expenses of PV inverters turns into a commitment. PV inverters that utilize a detachment transformer, are cumbersome and difficult to introduce. While by connecting with a high recurrence transformer almost a DC-DC converter can contract the size of the inverter, it diminishes the …
Published in Recent Trends in Electronics Communication Systems · Vol. 8, Issue 1, 2021 · pp. 30–24 Read article
-
Three-phase Squirrel Cage Induction Generators (SCIG) Connected to Grid: An Overview
Abstract: The induction generators associated with non-conventional energy systems like wind, mini/micro hydro are gaining popularity day by day as they are generating clean energy. The induction generators may be operated in two modes: isolated and grid connected. Further the grid connection can be done by using squirrel cage induction generators or doubly fed induction generators. In this paper detailed study of grid connected Squirrel cage induction generator is done, discussing …
Published in Trends in Electrical Engineering · Vol. 3, Issue 2, 2013 · pp. 29–35 Read article
-
Speed Control of An Inverter Fed Three-Phase Induction Motor Using IP Controller Considering Core Loss and Stray Load Loss
Abstract: Consideration of core losses and stray load losses to design a controller of an inverter fed induction motor are affected to the flux and torque decoupling strategy adversely. As a consequence, the detuning of field-oriented control (FOC) is required. The detuning strategies have been developed in some literatures. But the implementation of detuning becomes difficult because of higher order expression. In general, the controlling and estimation of AC drives are …
Published in Trends in Electrical Engineering · Vol. 5, Issue 1, 2015 · pp. 28–35 Read article
-
Design Optimization of Three Phase Induction Motor: A Technological Review
Abstract: This paper is intended to review the significant development in design optimization of electrical motors in last decay. Contents in this review paper starts with introduction of induction motor and its role in the industry. Different optimization methods which can be applied to get best suited optimal design of induction motor to achieve best performance of machines are discussed. Genetic algorithm (GA) and particle swarm optimization (PSO) are two latest …
Published in Trends in Electrical Engineering · Vol. 6, Issue 1, 2016 · pp. 1–9 Read article
-
Two Phase Retrial Queue Evaluation Using DEMATEL (Decision Making Trial and Evaluation Laboratory)
Abstract: In this study, retrial queues are characterized by calls that detect that all servers are busy joining the review team, and retrying their demands in random order and at random intervals. If the server is found to be busy, customers can join the review team at a random time. But they keep making the same demands, at random or at set intervals. Recurring queues are widely used to model many …
Published in Journal of Communication Engineering & Systems · Vol. 12, Issue 3, 2022 · pp. 6–19 Read article
-
Operating Limits of Three-phase Self-excited Induction Generator under Unbalanced Operations
Abstract: This paper presents a new GA based model to analyze the steady state performance of the self-excited induction generator (SEIG) under unbalanced load and excitation. The proposed model is based upon the load decoupled approach using symmetrical component theory. The simulated results as obtained using proposed model are compared with experimental results on a test machine. Close agreement with the experimental results proves the effectiveness of GA based model and …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 4, Issue 3, 2013 · pp. 13–29 Read article
-
Numerical and Experimental aspects in two phase flow
Abstract: A complete numerical simulation of a bubble of lower density being introduced in fluid has been done. Transient finite volume used for the descritization of Navier Stokes equation and suitable boundary condition have been appiled to understand the dynamics of bubble.
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 5, Issue 3, 2018 · pp. 7–16 Read article
-
Pharmacophore Mapping of Dengue Virus Inhibitors of Natural Origin Using Phase and Self Organizing Neural Networks
Abstract: Dengue virus (DENV) infection is an important arthropod-born viral infection infecting about 2.5 billion people worldwide. To date there are no effective vaccine or antiviral treatment for dengue. Dengue patients are usually supportively treated until they recover without any specific treatment measures. Plants and plant’s derived compounds remain an important source for the discovery and the development of new antiviral drugs because of their expected low side effects and their …
Published in Research & Reviews: A Journal of Bioinformatics · Vol. 1, Issue 2, 2014 · pp. 1–18 Read article
-
Role of Satellite Sensors & GIS in Discrete Phases of Disaster Management
Abstract: Around the world, disasters are becoming a growing concern. Natural disasters like floods, earthquakes, severe storms and tropical cyclones, droughts, wild land fires, and man-made disasters like hurricanes and tornadoes have damaged the environment as well as destroyed economic and social infrastructure over the previous five decades. The Geographical Information System and Remote Sensing have been used as potential tools for disaster management and monitoring, particularly in the pre, during, …
Published in Journal of Remote Sensing & GIS · Vol. 13, Issue 3, 2022 · pp. 15–20 Read article
-
Variability and Association of Characters among Common Bean (Phaseolus Vulgaris L.) Genotypes in Southern Ethiopia
Abstract: This experiment was conducted in Guraghe and Siltie Zones of Southern Ethiopia to assess the extents of variability and associations of characters among common bean genotypes. Data were collected on nine quantitative traits. The analysis of variance revealed significant variation among the traits. Moderate genotypic and phenotypic coefficient of variation was observed for 100 seeds’ weight, pod length and seed per plant. Highest heritability and genetic advances as percent mean …
Published in Research & Reviews : Journal of Botany · Vol. 10, Issue 2, 2021 · pp. 21–27 Read article
-
Performance Evaluation and Stability Analysis of Medium Seeded Common Bean (Phaseolus Vulgaris L.) Varieties in Siltie And Gurage Districts Of Southern Ethiopia
Abstract: Field experiment was conducted with eight medium seeded for two consecutive years (2020 - 2021) comprising three environments (Mareko, Sankura and Abeshge). The objective of this study was to identify and select high yielding and best performing medium seeded common bean varieties for wide and specific adaptability. Eight medium seeded common bean varieties were used. Randomized Complete Block Design with three replications was used. Data was analyzed using R software …
Published in Research & Reviews : Journal of Botany · Vol. 11, Issue 2, 2022 · pp. 35–40 Read article
-
Study of Phase Velocity and Magneto Plasmon Dispersion on the Surface of Carbon Nanotubes in Low Energy State
Abstract: Several authors have worked on theoretical and experimental plasmon excitations. The researchers have been studying the dispersion relation of magneto plasmon in the low energy state on a cylindrical surface of carbon nanotube obtained with the help of linear-angular momentum transfer. Here, we demonstrate the Dirac-like Hamiltonian equation for carbon nanotubes in the presence and absence of a parallel applied magnetic field. We assume the cylindrical carbon nanotube is infinitesimally …
Published in Research & Reviews : Journal of Physics · Vol. 11, Issue 3, 2022 · pp. 21–25 Read article
-
Stretchable Elastomer–Phase Change Composites for Passive Thermal Management in Wearable Electronics
Abstract: Elastomer-embedded phase change material (EPCM) composites are developed as stretchable, leakage-free, and electrically insulating thermal regulation layers for wearable electronics operating under stringent skin-safety requirements. The EPCM architecture comprises microencapsulated organic phase change materials (μPCM, 30–70 wt%) uniformly dispersed within soft elastomer matrices based on PDMS or SEBS-type thermoplastic elastomers, together with low loadings (1–8 wt%) of electrically insulating hexagonal boron nitride (h-BN) fillers to enhance lateral heat transport. Differential …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 30–41 Read article
-
Evolution of Empirical Equations for Prediction of Melting Point and Latent Heat of Alkanes
Abstract: Alkanes and paraffins are well recognized phase change materials (PCMs) for low and medium range temperature thermal energy storage applications. Melting point and latent heat are two crucial parameters for any PCM for its use in any thermal storage application. The values of these parameters are normally measured by expensive and time consuming measuring devices.In this paper, three empirical equations are presented to predict the melting point and latent heat …
Published in Journal of Modern Chemistry & Chemical Technology · Vol. 7, Issue 3, 2016 · pp. 8–11 Read article
-
TZSBLC With Optimized PI Controller Design for Grid Tied PV Based Electric Vehicle
Abstract: Around the world, about 18% pre-mature births and 3.7 million losses of lives occur due to air pollution and 29% of it is contributed by the Internal Combustion Engine (ICE) based vehicles, which consumes fossil fuels for its functioning. Moreover, the increased demand for fossil fuels, as well as the growth in concerns regarding the environmentally friendly and zero-emission transportation, lead to the introduction of electric Vehicles (EVs). The increased …
Published in International Journal of Electrical Machine Analysis and Design · Vol. 3, Issue 1, 2025 · pp. 18–35 Read article
-
Boost Converter with Optimized Pi Controller Design for Grid Tied PV Based Electric Vehicle
Abstract: The growing demand of clean energy along with the depletion of fossil fuel usage have paved the way for electric vehicles (EV) to emerge as a significant alternative in automobile sector. Reduction of air pollution and reliance of fossil fuels thereby improving energy security are termed as the primary goals of EV. The adopting of EV facilitates emission free transportation and addresses the environmental crisis caused due to climatic changes …
Published in International Journal of Electrical Power and Machine Systems · Vol. 3, Issue 1, 2025 · pp. 1–16 Read article