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1964 articles for “as a result of which” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Voltage Gain Improved Method using Soft Switching Technique in a Forward-Flyback Converter
Abstract: In this paper, a high step-up topology employing a ZVS soft-switching technique in forward-flyback DC-DC converter to improve the voltage-gain is presented. The ZVS soft-switching technique implemented in a DC-DC converter suppresses the voltage spikes, which reduces the switching voltage stress and improves the voltage gain of the converter. A 60 W SFFB DC/DC converter test system is implemented in MATLAB/SIMULINK to verify the results. The comparison is also made …
Published in Journal of Microcontroller Engineering and Applications · Vol. 3, Issue 2, 2016 · pp. 20–26 Read article
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Design and Implementation of Microstrip Line Fed Rectangular Patch Antenna
Abstract: AbstractThis paper presents a high-performance microstrip line fed rectangular patch antenna with resonance frequency of 2.75GHz. The antenna has been simulated using IE3D software as well as HFSS. The return loss of the patch antenna found to be 24dB through IE3D simulation tool. From the results obtained, it is clear that harmonics exists at 3.75GHz which successfully minimized by removing a part of microstrip conductor with dimensions in accordance to …
Published in Journal of Microwave Engineering and Technologies · Vol. 7, Issue 1, 2020 · pp. 1–4 Read article
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Analysis of Braggs Grating for photonics application
Abstract: The plane wave expansion approach was used to optimise reflectance in a Braggs grating on a silicon on insulator structure at wavelength 1.55µm. When the results were compared to the experimental results, it was discovered that they agreed better than any other present results. Aside from the inherent benefits of FBGs, such as low cost, low losses, polarisation insensitivity, and full compatibility with fiber-optic systems, they have demonstrated that by …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 1, 2022 · pp. 32–35 Read article
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Experimental Setup to Determine Stress Wave Propagation in a Compound Bar
Abstract: Deformation undergone by a body due to impact results in development of dynamic stresses. This deformation depends on the material properties and geometry. Advancements made in stress wave propagation are focused at the necessity to understand dynamic history of structures subjected to applied loads. Stress travels with different velocities in different bodies depending upon material characteristics, crystal structure etc. Forces applied on bodies at short intervals of time result in …
Published in Journal of Materials & Metallurgical Engineering · Vol. 8, Issue 2, 2018 · pp. 1–6 Read article
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Finite Element Analysis of Pistons Made of Steel and Al-4032
Abstract: In this paper, stress analysis of pistons made up of two different materials is discussed. The three-dimensional model of the piston is modeled using Pro/Engineer software. The finite element analysis (FEA) is performed in Mechanica module of Pro/Engineer software to analyze the various results and compare the results of stress analysis of piston made up of two different materials. The results can be used to choose the suitable material for …
Published in Journal of Materials & Metallurgical Engineering · Vol. 3, Issue 2, 2013 · pp. 21–25 Read article
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Analysis of Properties of Copper-Alumina Composites Produced by Various Processing Routes: A Review
Abstract: The metal matrix composites (MMCs) are of keen interest in the recent years because of their pervasive application in automotive and aerospace industries .This paper summarizes the Cu/Al2O3 composites prepared by various fabrication routes and their results. The copper-alumina MMCs are gaining importance increasingly and act as good alternatives to be used for functional applications mainly microwave tubes, electrical equipment, high temperature conductors, automobile and aerospace industries. Cu/Al2O3 composites have …
Published in Journal of Materials & Metallurgical Engineering · Vol. 2, Issue 1-3, 2012 · pp. 30–42 Read article
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Hybrid effect of nanoperlite and nanoclay on mechanical and rheological properties of low-density polyethylene
Abstract: The effect of two kinds of nanomaterials, nanoclay (NC) and nanoperlite (NP) was studied on morphological, rheological, mechanical and dynamic-mechanical properties of low-density poly ethylene (LDPE). It was found that hybrid nanofiller dispersion in LDPE depended on the type (hybrid or individual form) and in higher extent also on the amount of the nanofiller incorporated. Rheological results revealed that storage modulus and complex viscosity of hybrid nanofiller-filled LDPE nanocomposites increased …
Published in Journal of Polymer & Composites · Vol. 6, Issue 1, 2018 · pp. 32–41 Read article
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Synthesis of Poly(Methyl Methacrylate) Latex Using Batch Emulsion Polymerization Reactor: Experimental and Simulation Study
Abstract: AbstractThe rationale for the present study was to develop Poly(methyl methacrylate) polymer latex, using free radical emulsion polymerization mechanism, in which water acted as the continuous aqueous phase, methyl methacrylate monomer as the dispersed phase, potassium persulfate (KPS) as an initiator and sodium dodecyl sulfate (SDS) as the stabilizing agent. PMMA is a versatile thermoplastic resin, used widely because of its excellent performance in optical and medical field. The characterization …
Published in Journal of Polymer & Composites · Vol. 4, Issue 1, 2016 · pp. 37–44 Read article
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Development of Starch/Keratin/Chitosan Composite Material as a Substitute for Polystyrene in Food Packaging
Abstract: The increase in awareness of the environmental impact of non-biodegradable waste from food packaging, has seen manufacturers push towards initiating production of eco-friendly packaging materials. This research serves as a step forward in the direction of going green, through the development of a composite material from natural, biodegradable polymers, for use in production of packaging material for fast foods. The composite was prepared from starch and chitosan with chicken feather …
Published in Journal of Polymer & Composites · Vol. 7, Issue 3, 2019 · pp. 1–7 Read article
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Study the Mechanical Properties of Epoxy Resin Reinforced with Metal OxideNanoparticles
Abstract: In this research the additive effect of (Magnesium Oxide (MgO), Zirconium Oxide (ZrO2), Copper Oxide (CuO)) nanoparticles to epoxy resin as a matrix have been studied, in addition tomanufacturing hybrid composites from the same nanoparticles which are (CuO/ZrO2, MgO/ZrO2) to epoxy resin as a matrix too. The hand lay-up method is using to manufacturing the composites from the epoxy resin and the nanoparticles with different weight ratios((0, 3, 6, 9) …
Published in Journal of Polymer & Composites · Vol. 9, Issue 1, 2021 · pp. 7–12 Read article
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Investigation into mechanical Characterstics of laminated composite materials (PMMA and NYLON) using FDM
Abstract: The widespread embrace of 3D printing technology stems from its capacity to minimize material waste, offer versatile design options, and enable the production of intricate structures. 3D printed polymer composites reinforced with fibers (carbon, glass, nylon etc.) have been extensively used in automobile, marine, aerospace and energetic applications due to their excellent properties. Nylon fiber is light weight, resistance to damage from oil and chemicals, tough, strong and has higher …
Published in Journal of Polymer & Composites · Vol. 12, Issue 2, 2024 · pp. 108–121 Read article
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Electromagnetic Transients and Frequency Characteristics of a Loaded Horizontal Conductor above Lossy Earth
Abstract: This paper addresses the electromagnetic transients and the frequency characteristics of a thin conductor horizontally suspended above lossy earth. The analysis takes into consideration the receiving-end termination and the earth parameters. The effect of the ground return is represented by incorporating the concept of the complex penetration depth in the formulation of the line’s equations in the s-domain. The resulting simultaneous differential equations governing the voltage and current are solved …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 1, 2018 · pp. 29–41 Read article
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Design and Simulation of Fuzzy Logic Based Speed Control of Electrical Vehicle with Induction Motor Taking Core Loss and Stray Load Losses into Account
Abstract: In modern technology, electrical differentials to design electrical vehicle are getting popular for its simplicity, faster response, accurate control capability and other facilities. The controller design for the distinctive motors is a captivating and challenging work to acquire, sought execution appropriately. For this, different kind of controller is used to get accurate results. For induction motor, it is very important to control the speed and torque to get smooth control …
Published in Journal of Power Electronics and Power Systems · Vol. 7, Issue 1, 2017 · pp. 41–48 Read article
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Simulation of Sub-synchronous Resonance (SSR), and Mitigation of SSR by Static Synchronous Series Compensator with Lead Lag Compensator
Abstract: This research work presents a narrative method of alleviating the SSR problem using a static synchronous series compensator (SSSC). This method is based on using the SSSC to inject unbalanced series quadrature voltages and unbalanced shunt reactive currents in transmission line just after clearing faults. When the sub-synchronous oscillations drive unsymmetrical phase currents, the developed electromagnetic torque will be lower than the condition when three-phase currents are symmetrical. The unsymmetrical …
Published in Journal of Power Electronics and Power Systems · Vol. 2, Issue 1, 2012 · pp. 18–23 Read article
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Control of BLDC Motor using Fractional-order PID Controller Optimized by ICA
Abstract: In this paper a new method for speed control of BLDC motors is proposed. In this method, fractional order PID (FOPID) is used for control of BLDC motor. In order to determine the parameters of FOPID controller imperialist competitive algorithm (ICA) is employed for its high speed and accurate for solve of optimization problems. In order to verify the performance of proposed controller, some simulations have been carried out with …
Published in Journal of Power Electronics and Power Systems · Vol. 3, Issue 3, 2013 · pp. 27–38 Read article
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Control of a Three Phase Grid-Connected Photovoltaic System with Maximum Power Point Tracking
Abstract: The power output of a photovoltaic system is greatly dependent on environmental conditions such as solar irradiation and ambient temperature. Due to the nonlinear nature of these conditions, the power output of the PV system is nonlinear. As a result, interfacing its output to the electrical grid is not possible. In order to achieve a grid connected photovoltaic (PV) system, controlled maximum power point tracking techniques are needed to obtain …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 52–64 Read article
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Genetic Algorithm Based Optimal Volt/Var Control of Distribution Systems with Distributed Generation
Abstract: In this paper, new voltage regulation algorithms have been proposed for Distribution System (DS) equippedwith Distributed Generation (DG). Due to the ever increasing power demand, the power system sector isfacing too many challenges to fulfill that demand and also to supply power with proper acceptable quality.Distributed generation is one of the most efficient solutions to meet the increasing demand. When integratedwith the grid, it has its own technical as well …
Published in Journal of Power Electronics and Power Systems · Vol. 1, Issue 1-2-3, 2011 · pp. 28–46 Read article
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Modeling and Simulation of a Chaotic Oscillator Using Mathematica
Abstract: This paper suggests a modified methodology for the modeling and simulation of a chaotic oscillator. Its analysis and the pertinent results of an efficient Mathematica simulation program dealing with a typical Chua's circuit are presented and discussed. The derived computer code is based on the application of state-variables in the time domain. The program yields the circuit’s currents and voltages and indicates their sensitivities to changes in the numerical values …
Published in Journal of Power Electronics and Power Systems · Vol. 11, Issue 1, 2021 · pp. 28–37 Read article
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Performance Investigation on Fault Analysis in Power Transformer using Modified Fuzzy Controller
Abstract: This article presents the fault analysis and differential protection scheme of the three phase Power Transformers (PT). The proposed and designed relay operates mainly during the internal fault condition and it must be insensitive to any fault outside the zone of protection. In this paper, a designed and modified fuzzy logic controller based differential protection schemes have been used to product the system. The external and internal fault condition is …
Published in Journal of Power Electronics and Power Systems · Vol. 12, Issue 2, 2022 · pp. 32–43 Read article
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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