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162 articles for “Steady-state”
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Analysis of Six-Pulse Bridge Circuits Including Zener and Semiconductor Diodes Part One
Abstract: This paper addresses the analysis of electronic bridge circuits including Zener and/or semiconductor diodes. The analysis is based on recently suggested models for these diodes. A compact Mathematica code written in the Versions 7.0, 11.3 and 12.2 simulating a six-pulse rectifier bridge circuit is then derived and mathematically implemented. It investigates the time-domain transient and steady-state analysis of several representative case studies. In principle, the computer simulation can yield the …
Published in Journal of VLSI Design Tools and Technology · Vol. 12, Issue 1, 2022 · pp. 14–22 Read article
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VELOCITYAND OXYGEN DEFICITT INFLUENCE ON THE TRANSPORT OF FRANCISELA IN ELEME CREEK
Abstract: The purpose of this paper is to monitor velocity and oxygen deficit effect on the transport of francisela in Eleme creek, a steady state advection-diffusion-reaction on the transport process were observed in the system, in other to developed the various rate of concentration, constant oxygen deficit and velocity were also monitored in the study, the system express high to low concentration in all the locations that were examined on the …
Published in Journal of Water Resource Engineering and Management · Vol. 6, Issue 2, 2019 · pp. 47–52 Read article
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Assessing Flow Pattern of Sabarmati River Portion at Hirpura Barrage Site Gujarat, India Using HEC-RAS Hydrodynamic Models and Physical Models
Abstract: A barrage is proposed to be constructed across river Sabarmati, 60 km downstream of Daroi dam to create reservoir within the bank for recharging and meeting water demand of nearby areas. For analyzing the flow pattern and assessing the hydraulic parameters of Hipura barrage on Sabarmati river near Hirpura village of Mehsana District of Gujarat, a 3D physical model with geometrically similar scale 1:80 for river reach 3 km (1 …
Published in Journal of Water Resource Engineering and Management · Vol. 6, Issue 3, 2019 · pp. 46–51 Read article
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Design and Analysis of Water Distribution Network in Airoli City to Digha Village
Abstract: Water is a fundamental component expected for the food of life. Interest in drinking is expanding on a ceaseless premise with the related expanding populace. In India, the organic market of water is expanding and prevalent. Water dissemination network frameworks are intended to distribute water from a source in a sufficient amount, quality, and at good strain to every individual purchaser. The water circulation framework implies any mix of lines, …
Published in Recent Trends in Civil Engineering & Technology · Vol. 12, Issue 2, 2022 · pp. 45–54 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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An Elementary Analysis on Ventilated Helmets Using Computational Fluid Dynamics
Abstract: AbstractThis paper focuses on the elementary analysis of a motorcycle helmet using computational fluid dynamics (CFD). The designs of the helmet chosen for the analysis are open face, closed face, and open face with human skull inside. The analysis was done on various speeds of airflow. However, in this paper we will be giving a more generalized idea considering only one velocity of the airflow. We used ANSYS (fluent) for …
Published in Recent Trends in Fluid Mechanics · Vol. 5, Issue 2, 2018 · pp. 1–12 Read article
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Fuzzy Control for Speed Control of DC Motor with Two-inductor Boost Converter
Abstract: This study presents a closed loop control of two-inductor boost converter fed DC motor with the design of fuzzy controller to control the speed of separately excited DC motor. The speed of motor can be changed by controlling the armature and field voltages. The fuzzy controller is designed to control the armature voltage while the field voltage is fixed as a constant. The fuzzy controller system tunes to error and …
Published in Trends in Electrical Engineering · Vol. 8, Issue 2, 2018 · pp. 1–9 Read article
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Design and Simulation of Discrete Time Multi-Input Multi-Output Optimal Controller to Control Active and Reactive Power of DFIG
Abstract: The control of active and reactive power of doubly-fed induction generator (DFIG) in a large scale wind farm has become an important issue for the improvement of wind energy system to provide efficient and reliable electrical power with safety. The control strategies of active power and reactive power can be classified in two types—direct power control and indirect power control. First control strategy has designed based on the chosen switching …
Published in Trends in Electrical Engineering · Vol. 5, Issue 1, 2015 · pp. 1–11 Read article
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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
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Study of Load Frequency Control
Abstract: This paper is an attempt to study the control of active and reactive power in order to keep the system in the steady state. In addition, simple models of the essential components used in control system are analyzed. The objective of the control strategy is to generate and deliver power in an interconnected system as economically and reliably as possible while marinating the voltage and frequency within permissible limits. These …
Published in Trends in Electrical Engineering · Vol. 6, Issue 2, 2016 · pp. 73–79 Read article
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Simulation Results of Harmonic Compensation by Using PQ Based PI Controller for Grid Connected Current Controlled DG Unit
Abstract: With the development of new technologies and electronic devices, one of the main topics of special concern is the aspect of power quality, amongst which control and prediction of harmonics are of utmost importance. The presence of harmonics caused by nonlinear loads which are common in industrial plants and large scale office buildings means a threat to the sensitive equipments like that of computers, adjustable speed drives, power electronics load …
Published in Trends in Electrical Engineering · Vol. 6, Issue 2, 2016 · pp. 64–72 Read article
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The Analysis of Bridge Rectifier Circuits using Mathematica
Abstract: This paper addresses the steady-state and transient analysis of bridge rectifiers. It starts withsuggesting an efficient representation of the diodes. A single equation that describes thediode’s performance in both the forward and reverse directions is presented. It implicitlytakes the voltage polarity into account. Without any loss of generality, the suggested method isapplied to the classical uncontrolled four-valve full-wave rectifier bridge configureuration.The effect of the load resistance and the eventual presence …
Published in Trends in Electrical Engineering · Vol. 10, Issue 1, 2020 · pp. 30–42 Read article
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Harmonic Analysis of Full-Wave Diode Bridge Rectifier Circuits
Abstract: This paper analyzes the steady-state harmonic performance of four-diode, single-phase full-wave rectifier bridge circuits. The frequency spectra of the source and load currents are presented. The effect of the load resistance, the source inductance, the smoothing shunt- capacitor as well as the waveform of the supply voltage is illustrated. The approach can also handle cases involving non-sinusoidal sources and non-linear loads. Based on a Mathematica code, the paper presents the …
Published in Trends in Electrical Engineering · Vol. 10, Issue 1, 2020 · pp. 7–21 Read article
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Photovoltaic Integrated Electric Vehicles Charging stations for isolated locations
Abstract: Future mobility plans of global countries focus on replacement of IC engines operated mechanism by electrically powered systems. It aims to reduce carbon footprints, improve fuel efficiency and make vehicle systems smarter. A typical electric vehicle is an integration of battery banks, charge management systems, electric motors, power electronic converters, and control mechanisms. The battery bank maintains the supply of energy for the operation of the motor which in turn …
Published in Trends in Electrical Engineering · Vol. 13, Issue 1, 2023 · pp. 1–11 Read article
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Regulation of Second and third Order Intervals Plant Using PID Surface Sliding Mode Control Strategy
Abstract: In this article regulation aspects of second and third-order interval systems considering sliding mode control, PID surface sliding mode control strategies are discussed. The transfer function models of second and third order systems are considered for the evaluation of system performances. The linear part and non-linear part of the SMC strategy are designed and stability is analyzed using Lyapunov analysis. A conventional PID controller and PID surface SMC strategy are …
Published in Trends in Electrical Engineering · Vol. 13, Issue 2, 2023 · pp. 28–49 Read article
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Thermal Analysis and Computer Aided Exhaust Valve Design Automation Using CREO and Microsoft Excel Spreadsheet
Abstract: 3D modeling has widely been used because of their ease in visualization, understanding andgeneration of manufacturing drawing sheets compared to 2D drafting. 3D Modeling is the timeconsumingprocess and many draftsmen does not have the skill to draw a 3D object inside a CADpackages. Internal combustion engine consists of two type of valves inlet valve and exhaust valve. Thepair of inlet and exhaust valve is called as poppet valves. Exhaust valve …
Published in Trends in Machine design · Vol. 8, Issue 1, 2021 · pp. 26–41 Read article
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Design and Performance Analysis of a 635 nm Ga0.5In0.5P/(Al0.7Ga0.3)0.5In0.5P Multiple Quantum Well Separate Confinement Heterostructure Red Laser Considering Thermal Limitations
Abstract: AbstractIn this work, the performance characteristics of a GaInP - based 635 nm multiple quantum well (MQW) separate confinement heterostructure (SCH) Red laser has been obtained through computations. The material gain of Ga0.5In0.5P/(Al0.5Ga0.5)0.5In0.5P MQW edge emitting laser (EEL) has been theoretically obtained. The peak material gain obtained from the analysis has been used for analyzing the performance of the designed double-heterostructure laser. A maximum output power of 71.18 mW and …
Published in Trends in Opto-electro & Optical Communication · Vol. 3, Issue 1, 2013 · pp. 11–17 Read article
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Controlling of Level Process in Non-Linear System Using Variable Frequency Drive
Abstract: Abstract—The objective of this paper is to investigate the Model Predictive Control (MPC) strategy, analyze and compare the control effects with Proportional-Integral-Derivative (PID) control strategy in maintaining a level of spherical tank system using VFD. An advanced control method, MPC has been widely used and well received in a wide variety of applications in process control, it utilizes an explicit process model to predict the future response of a process …
Published in Current Trends in Information Technology · Vol. 9, Issue 2, 2019 · pp. 24–33 Read article
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Optimized Performance Characteristics of a 450 nm Semiconductor Laser by Varying Differential Gain
Abstract: AbstractIn this work, the effects on the performance characteristics of a true-blue 3QW separate confinement heterostrcture edge-emitting laser are presented by varying differential gain. At the temperature of 300 K, the threshold current of the laser is . The peak material gain for the designed laser is obtained as and further used for the analysis of the performance characteristics of the designed double-heterostructure laser for the variation of differential gain. …
Published in Journal of Communication Engineering & Systems · Vol. 3, Issue 3, 2013 · pp. 26–35 Read article
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Performance Analysis of Ultra-Short Junctionless DGMOS Nanowire Transistors with High-k Gate Dielectric
Abstract: AbstractIn this report, we present a comparative analysis of ultrashort 3-D junctionless nanowire DGMOS transistors using different high-k gate dielectric by virtually fabricating the device in Visual TCAD. The ultrashort devices having channel length of 20 nm were simulated and performances like I-V characteristics, transconductance etc. were analysed. It was found that HfO2 has better steady state performances as gate dielectric owing to better control of the channel over the …
Published in Journal of Communication Engineering & Systems · Vol. 9, Issue 1, 2019 · pp. 35–42 Read article