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387 articles for “isolated”
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Evolution of Protection Coordination Methods in Power Distribution Systems: A review
Abstract: This comprehensive paper presents a broad-ranging exploration of the multifaceted challenges inherent in coordinating over-current relays within distributed generation (DG) systems in the context of power grids. Within these systems, the pivotal roles of both protective devices and the overarching protection system are highlighted, emphasizing their joint responsibility in detecting short-circuit currents and swiftly isolating faulty components. The primary objective of this protection coordination is to ensure the meticulous selection …
Published in Journal of Power Electronics and Power Systems · Vol. 13, Issue 3, 2023 · pp. 9–16 Read article
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Extraction and Characterization of an Eco-Friendly Surfactant for Its Use in Enhanced Oil Recovery
Abstract: Experimental studies have been performed to explore the suitability of an eco-friendly surfactant in enhanced oil recovery. In this respect, herbal surfactant has been isolated from soap nut and characterized by its morphology and physico-chemical properties. The extracted surfactant reduces the interfacial tension significantly over a wide range of concentrations. A series of flooding experiments have been carried out using the extracted surfactant and substantial incremental recoveries have been observed …
Published in Journal of Petroleum Engineering & Technology · Vol. 3, Issue 1, 2013 · pp. 20–29 Read article
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Crude Oil Remediation in Soil Environment using Orange (Citrus sinensis) Peel
Abstract: The research on effective performance of citrus sinensis (orange) peel was monitored in crude oil remediation in loamy soil environment. Different bioreactors with different bio-stimulant dosage of 20g, 40g, 60g, 80g, 100g of room dry and sundry samples were tested to examine the performance on microbial activities on crude oil mitigation in each bioreactor. The nutrient of the bio-stimulants was determined as pH value of 6.63, total nitrogen content of …
Published in Journal of Petroleum Engineering & Technology · Vol. 13, Issue 2, 2023 · pp. 24–34 Read article
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Comparison of Physicochemical Concentration on Temperature Effect of Crude Oil Contaminated Water Environment
Abstract: The bio-adsorbents used are plantain stem fiber, banana stem fiber and palm fruit fiber and the investigation was aimed to examiner the effect of temperature on the performance of the bio-adsorbents in a packed bed unit for the mitigation (reduction or removal) of total petroleum hydrocarbon (TPH) from the fresh water medium using agro based fibre, which was prepared by subjecting the agro materials into sun and room dried before …
Published in Journal of Petroleum Engineering & Technology · Vol. 13, Issue 3, 2023 · pp. 1–17 Read article
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Schmitt-Trigger Based 12T SRAM Cell with Enhanced Stability
Abstract: In this work, we present a single-ended Schmitt-trigger (ST) based 12T static random access memory (SRAM) cell. The proposed cell employs cross-point data aware write structure, and thus supports bit interleaving architecture to mitigate soft errors. The proposed cell does not suffer from read disturbance as bit line is completely isolated from bit storage node. Simulation is done on 180 nm CMOS technology on Cadence. Read static noise margin (RSNM) …
Published in Journal of Semiconductor Devices and Circuits · Vol. 5, Issue 1, 2018 · pp. 5–10 Read article
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Current Fed Push-Pull Converter for High Voltage Gain Applications
Abstract: AbstractAn isolated high step up voltage gain with appropriate duty ratio with application on energy storage system is proposed. As push pull converters are step down converters, here, this topology will help in step up the voltage. This converters semiconductor device maintains zero current switching (ZCS). Push pull converter has only two devices with common ground with source requiring simple gate driving circuitry.Keywords: Current fed push-pull, variable frequency modulation, zero …
Published in Journal of Semiconductor Devices and Circuits · Vol. 5, Issue 2, 2018 · pp. 33–42 Read article
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Parametric Study of Tuned Liquid Damper on Multistorey Frame Unit
Abstract: Swimming pools in a skyscraper are not only an entertainment facility but also a boon of a structural design engineer to curb the impact of lateral forces such as wind, earthquake, etc. The usage of swimming pools as liquid tuned damper is a cost effective alternative without having any additional component within the structure. Much of the research to damp the vibration of the structure like base isolation, bracing, in-fills …
Published in Journal of Structural Engineering and Management · Vol. 3, Issue 3, 2016 · pp. 46–54 Read article
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Evolution of Graphene Oxide : A Survey
Abstract: Graphene, first isolated in 2004, is the 2D material that captivated researchers’ attention due to its extraordinary properties. These extraordinary properties motivated researchers to keep on searching better ways for synthesis of Graphene oxide (GO) and reduced graphene oxide (rGO). Several synthesis(oxidation-reduction) mechanisms are available in literature such as: Staudenmaier’s(ST), Hofmann’s (HO), Hummers’ (HU), Modified Hummer’s (MHU), improved Hummers’(IHU) and Mild Oxidation(MO) methods for oxidation and thermal, chemical, hydrothermal and …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 5, Issue 2, 2018 · pp. 31–39 Read article
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Analysis of Three Phase AC-DC Front End Converter with Vector Control
Abstract: The revolution in power electronics has opened in last few years widespread use of power converters of different power rating from few Watts to Mega-Watts. 3 phase AC-DC converters (Controlled rectifier) are most widely used power converters as the distributed electric power is AC supply, while the applications based on DC supply as well as variable frequency AC supply, need conversion of AC supply into DC supply. Large current harmonics …
Published in Journal of VLSI Design Tools and Technology · Vol. 11, Issue 3, 2021 · pp. 19–30 Read article
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Response Study of High Rise Building under Wind Load
Abstract: Wind is a phenomenon of great complexity because of the many flow situations arising from the interaction of wind with structures. Wind is of the most significant forces of nature that must be considered in design of buildings. The characteristics of wind-induced loads on buildings continuously vary in temporal and spatial dimensions. Adequate design of buildings depends on the success in predicting the actual effects of turbulent wind forces to …
Published in Recent Trends in Civil Engineering & Technology · Vol. 8, Issue 3, 2018 · pp. 35–45 Read article
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Power Quality Improved AC-DC Sepic converter Used for Welding application
Abstract: Abstract— In this paper high frequency isolated ac-dc single phase single ended primary inductance converter (SEPIC) are proposed. Due to use of HF transformer more gain and high power is obtain. Proposed converter offers increased gain which is step-down in nature having less stress on current and also high efficiency. This paper described analysis modeling, and simulation of proposed converter. The performance is described in terms of power quality like …
Published in Recent Trends in Electronics Communication Systems · Vol. 6, Issue 1, 2019 · pp. 24–30 Read article
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HMM-Based Text-to-Speech Synthesis & Stressed Speech Processing
Abstract: According to this paper, the new system produces synthetic speech that is noticeably higher-quality thanspeaker-dependent systems when actual speech data sets are used, and it can compete with speaker-dependent approacheseven in situations when substantial speech data sets are available. This excitation signal, the glottal source, has naturallypiqued the interest of speech synthesis, and a variety of techniques have been developed to mimic the glottal source ofspontaneous speech.The use of artificial …
Published in Recent Trends in Electronics Communication Systems · Vol. 10, Issue 3, 2023 · pp. 7–14 Read article
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Numerical Investigation of Influence of Rate of Rotation on Formation of Vapor Around Two Heated Circular Cylinders Immersed in Water Inside a Channel
Abstract: AbstractThe complexity problem of fluid flow and heat transfer over an array of circular cylinders are common in industrial applications of the fluid dynamics. The complex nature of the problem encountered in industry, gives rise to certain significant dimensions in the fluid dynamics theory. Some of them are the fluid flow interaction, interferences in flow and vortex dynamics which are typically found in compact heat exchangers, cooling of electronic equipment, …
Published in Recent Trends in Fluid Mechanics · Vol. 4, Issue 3, 2017 · pp. 14–25 Read article
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Low Power Long Range Wireless Protocols for IoT Applications for Pandemic Conditions
Abstract: AbstractInternet of things is a need of time. In January to March 2020 scenario where pandemic virus disease is spread all over the world. Most of the countries are following lockdown mode as prevention. IoT applications plays important role in such kind of disastrous conditions. The person is expected to remain in isolation if found infected by virus and all his daily activities are monitored. Wireless technologies play important role …
Published in Recent Trends in Sensor Research & Technology · Vol. 7, Issue 2, 2020 · pp. 17–22 Read article
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New Solution Technique for the Frequency and Transient Response of Transformer Windings with All Inter-Turn Mutual Inductances and Capacitances Included
Abstract: This paper addresses the frequency response, the identification of the resonance frequencies as well as the transient response of transformer windings taking into account all possible inter-turn mutual inductances and capacitances. The mutual inductances and capacitances between any turn to all other turns, i.e. not only the immediately adjacent ones, are considered. The analysis starts with writing the set of simultaneous differential equations relating the currents and voltages within the …
Published in Trends in Electrical Engineering · Vol. 3, Issue 1, 2013 · pp. 22–41 Read article
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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
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New Solution Technique for the Frequency and Transient Response of Transformer Windings with All Inter-Turn Mutual Inductances and Capacitances Included
Abstract: This paper addresses the frequency response, the identification of the resonance frequencies as well as the transient response of transformer windings taking into account all possible inter-turn mutual inductances and capacitances. The mutual inductances and capacitances between any turn to all other turns, i.e., not only the immediately adjacent ones, are considered. The analysis starts with writing the set of simultaneous differential equations relating the currents and voltages within the …
Published in Trends in Electrical Engineering · Vol. 3, Issue 3, 2013 · pp. 29–50 Read article
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Voltage and Power Quality Control in Wind Power Application by Dynamic Compensation
Abstract: Power quality problem is a critical problem in a power system. Most of the pollution problems created in power system is due to the nonlinear nature of loads. Due to large amount of non-linear equipment, impact and fluctuating loads (such as locomotive, arc-furnace, welding equipment, etc.); wind power as a rule, does not contribute to voltage regulation in grids. Also wind power very often is a source of voltage sag …
Published in Trends in Electrical Engineering · Vol. 4, Issue 1, 2014 · pp. 1–8 Read article
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Evaluation of OTA Amplifier Using EEG Signals
Abstract: AbstractOver the last few years, there has been a tremendous exploration in VLSI industries in response to scaling trends towards deep submicron technology. Demand for low power and efficient amplification are rising in day-to-day life. In the process of scaling the CMOS nanometer demand low supply, which is helped to design digital circuit realization at very low power consumption. But it is not valid for analog circuit realization. The related …
Published in Trends in Opto-electro & Optical Communication · Vol. 10, Issue 2, 2020 · pp. 5–14 Read article
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Modernization and Digitization in Power Grid Sub-Stations– The Prime tool for Multi Objective Optimization Methods.
Abstract: All Grid Sub-stations has four sections to control, operate and protect the large gamut electrical Power for its smooth flow till to the end customer.1. Generation, Loading, Conversion and Carrier Devices: We have generators as generation device, Motors and other electrical equipment as Loading device, Transformers as conversion device and Electrical Conductors as Carrier device. On technology front in this section, we have not experienced much technological changes. Only the …
Published in Trends in Opto-electro & Optical Communication · Vol. 12, Issue 1, 2022 · pp. 10–18 Read article