Search
1336 articles for “simulation studies”
-
Fuzzy Based Power Flow Control in Grid Connected Hybrid PV-PEMFC Microgrid System
Abstract: This paper evaluates the performance of a fuzzy based power flow control of grid connected hybrid system. The hybrid system composed of a Photovoltaic (PV) array and a Proton exchange membrane fuel cell (PEMFC) is considered. The photovoltaic (PV) array normally uses a maximum power point tracking (MPPT) technique to continuously deliver the highest power to the load when there are variations in irradiation and temperature occur, which make it …
Published in Journal of Microelectronics and Solid State Devices · Vol. 3, Issue 1, 2016 · pp. 20–29 Read article
-
A PWM Based Series Compensator for Power System Performance Enhancement
Abstract: Enhancement of power system stability through a relatively new FACTS device named pulse width modulated series compensator (PWMSC) in the transmission line has been investigated in this article. The three-phase PWMSC is realized with a simple pulse width modulated (PWM) AC link converter consisting of four force-commutated switches and a three-phase diode bridge. The PWMSC is modeled as a continuously controllable series capacitive reactance in the transmission line of a …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 1, 2016 · pp. 12–25 Read article
-
Improvement in Distribution System Performance by D-STATCOM
Abstract: Increasing use of power electronics devices in modern power system has many power quality problems arise in distribution system like voltage sag, voltage swell, harmonics, flickering, etc. This problem largely affects the performance of distribution system. Distribution static synchronous compensator (D-STATCOM) is a device which is used for the solution of power quality problems. In this paper, voltage sag and voltage swell were generated and mitigation of the same is …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 2, 2016 · pp. 25–33 Read article
-
Revamp of Feed Preheat Network Using Aspen Hysys in a Kero Hydro-Desulphurization Unit
Abstract: The paper is based on the revamp of feed preheat network in a Kero hydro-desulphurization unit. This revamp is beneficial as it does not require additional equipment to raise the feed temperature. Desulphurization of crude is a catalytic process used in oil and gas refining industry to remove sulphur content from refined petroleum products. Previously, feed was charged from the crude distillation unit at 103°C. Due to envisaged changes, the …
Published in Journal of Petroleum Engineering & Technology · Vol. 7, Issue 2, 2017 · pp. 29–38 Read article
-
Heat Integration of Crude Organic Distillation Unit using ASPEN PINCH
Abstract: chemical and petrochemical plants. In this article, the heat integration of crude organic distillation unit was elucidated with pinch analysis and ASPEN pinch simulating tool. Minimum utilities are calculated by constructing composite curves, shifted composite curves, grand composite curves and using problem table algorithm. Simulation studies include the effect of ΔTmin on hot and cold utilities requirement. Further Exergy losses are calculated by constructing Carnot composite curves and Carnot grand …
Published in Journal of Petroleum Engineering & Technology · Vol. 5, Issue 2, 2015 · pp. 35–46 Read article
-
High-speed CMOS ADCs Design
Abstract: This paper presents the design of high-speed subranging and flash analog to digital data converters (ADC) including the design of efficient operational amplifier to meet the performance requirements of these data converters for the specifications laid down targeted to the SCL 1.2 μm CMOS Foundry. The design starts from the specification of the circuit, its theoretical analysis for the parameter estimations of the transistors as well as the circuit’s design. …
Published in Journal of VLSI Design Tools and Technology · Vol. 2, Issue 1-2-3, 2012 · pp. 59–74 Read article
-
BER Analysis in Optical Fiber Communication System using Different Optical Amplifiers
Abstract: AbstractThis paper describes the simulation study of losses that occurs in the optical fiber communication system with and without optical amplifiers. The analysis is done in the OPTISYSTEM 16.0 software on the basis of Q-factor, BER and eye height for different optical amplifiers which are Erbium Doped Fiber Amplifier (EDFA) and Semiconductor Optical Amplifier (SOA)Keywords: BER, eye diagram, Q-factor, eye height, SOA, EDFA, OPTISYSTEM 16.0Cite this ArticleArpitha G.A. BER Analysis …
Published in Trends in Opto-electro & Optical Communication · Vol. 9, Issue 3, 2019 · pp. 33–42 Read article
-
Dual Band Suspended Microstrip Right-angled Isosceles Triangular Patch Antenna
Abstract: ABSTRACT In this paper a dualband suspended microstrip right-angled isosceles triangular patch antenna is designed for use in microwave imaging system for breast cancer tumour detection. An approximate design equations are developed and validated by CST Microwave Studio’s simulated result. Here dual band operation is achieved by manipulating fundamental mode and higher mode of microstrip antenna. Tuning of this antenna is achieved at frequency 3.35 GHz and 6.70 GHz which …
Published in Journal of Communication Engineering & Systems · Vol. 2, Issue 2, 2012 · pp. 7–13 Read article
-
Self-Tuning Wireless Power Transfer System Using Reinforcement Learning for Dynamic Electric Vehicle Charging
Abstract: The rapid growth of electric vehicles (EVs) has intensified the demand for efficient, reliable, and user-friendly wireless power transfer (WPT) systems capable of supporting dynamic charging under varying operating conditions. This paper presents a self-tuning wireless power transfer system employing deep reinforcement learning (DRL) to optimize power transfer efficiency in real time. Unlike conventional WPT controllers that rely on fixed compensation parameters or predefined control rules, the proposed framework continuously …
Published in International Journal of Advanced Control and System Engineering · Vol. 4, Issue 2, 2026 Read article
-
A Discrete Gamma Lifetime Model and Its Reliability Applications
Abstract: In this paper, we have first developed discrete gamma failure (dGam) lifetime model by discretizing the well-known gamma failure distribution. Thereafter, we have given a description of the distributional properties and reliability characteristics of dGam model. The next section consists of a few theorems on dGam and provides a basis for ML and Bayes estimation procedures are carried out in next sections along with a thorough simulation study depicting the …
Published in Research & Reviews: Discrete Mathematical Structures · Vol. 1, Issue 3, 2014 · pp. 5–20 Read article
-
Control Chart for Attributes based on Inverse Rayleigh Distribution
Abstract: In this paper, a new attribute control chart based on inverse Rayleigh distribution is developed under a time truncated life test. The number of failures is observed from the life test and the fraction nonconforming is to be monitored by two pairs of lower and upper control limits. The simulation study shows the efficiency of the developed chart. An example is provided for illustrating the new control chart.Cite this ArticleKowsalya …
Published in Research & Reviews: Discrete Mathematical Structures · Vol. 5, Issue 3, 2018 · pp. 1–5 Read article
-
Novel Effect of Gate Length on the Electrical Characteristics of Nanoelectronic Double-Heterojunction HEMTs with the Circuit Symbols and Load Line to Configure the Common-Source Amplifiers in Analog Electronics
Abstract: Total 3566 individual simulation-outputs are reported in this work. The linear region and saturation region in each drain characteristic curve of nanoelectronic AlGaN/GaN/AlGaN double-heterojunction high electron mobility transistors (HEMTs) are clearly shown. In this work, we have obtained the maximum drain current of 389 mA using these HEMTs. The investigations on the dependence of drain current with respect to gate length in these double-heterojunction HEMTs is a novelty of this …
Published in Research & Reviews: A Journal of Embedded System & Applications · Vol. 5, Issue 2, 2017 · pp. 8–18 Read article
-
Multi-loop Adaptive Internal Model Controller for Two Interacting Conical Tank Process
Abstract: In this paper, an adaptive multi-loop internal model control (IMC) scheme is proposed for nonlinear process. Nonlinear multivariable process is decomposed into linear single input single output process. The interaction effect and illness of each linear region is analyzed by RGA (Relative Gain Array) and singular value decomposition method (SVD). It is a matrix technique used to determine condition number of steady state plant to avoid sensitivity problem which arises …
Published in Journal of Instrumentation Technology & Innovations · Vol. 5, Issue 1, 2015 · pp. 21–31 Read article
-
Bayesian Weibull Model in Survival Analysis
Abstract: In this paper, we examine the performance of Maximum Likelihood Estimation (MLE) and Bayesian estimation of survival function of Weibull distribution with two parameters to the assigning informative prior and with three loss functions, namely, Linear Exponential (LINEX) Loss, General Entropy Loss and Squared Error Loss. Here the simulation study is carried out and the statistical analysis is done. Keywords: Weibull distribution, maximum likelihood estimation, Bayesian estimation, linear exponential loss, …
Published in Research & Reviews : Journal of Statistics · Vol. 7, Issue 1, 2018 · pp. 24s–29s Read article
-
Study of a Western Disturbance of 2023 Using Satellite-Based Observation, Reanalysis Data, and Numerical Simulation
Abstract: Western Disturbances (WDs) are synoptic-scale, extratropical storm systems that influence winter precipitation across northwest India. This study focuses on a specific WD event that occurred from 24– 25 March 2023, affecting Jammu & Kashmir, Himachal Pradesh, Uttarakhand, and Punjab. The analysis integrates satellite observations, ERA-5 reanalysis data, and simulations from the Weather Research and Forecasting (WRF) model to evaluate the model's performance. The novelty of this study lies in its …
Published in Journal of Remote Sensing & GIS · Vol. 16, Issue 3, 2025 · pp. 16–38 Read article
-
Drain Characteristics of GaN based Single-Heterojunction HEMTs with Variations in Gate Length and in Thickness of AlGaN Nano-Layer
Abstract: We have studied the drain characteristics in single-heterojunction AlGaN/GaN high electron mobility transistors (HEMTs) using the SILVACO-ATLAS software tool. The drain characteristics are studied with respect to five types of simulated structures. In each type of structures, the gate length and thickness of AlGaN nano-layer are different with respect to other types. Effects of drain voltage and gate voltage on drain current are studied by the simulated structures. Also, the …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 10, Issue 1, 2020 · pp. 1–10 Read article
-
Electromagnetic Transients in Compensated Power Lines- Revisited: New Approach and Case Studies
Abstract: This paper addresses the simulation of the electromagnetic transients developed in high voltage power lines, which are initiated by lightning discharges. The analysis can handle both individual and simultaneous series inductive and shunt capacitive compensation types. The sizes and locations of the compensating elements are included in the analysis. The derived Laplace s-domain mathematical model applies the concept of the ABCD transmission constants representing equivalent two-port networks. The resulting currents …
Published in International Journal of Electrical and Communication Engineering Technology · Vol. 2, Issue 1, 2024 · pp. 19–26 Read article
-
Study and Analysis of Polymer / Composite Thermal Insulation Material and Comfort Based Building Simulation with Applicability of Evaporative Cooling
Abstract: In India, about 35% of India's electrical energy is absorbed by buildings. Of this, the significant consumption is for the cooling purpose in building. Passive cooling systems, by comparison consume considerably less energy than mechanical cooling systems. Therefore, it is very important to understand the applicability of the passive cooling system by conducting comfort-based simulation of building as well as an examination of the influence of thermal insulation composed of …
Published in Journal of Polymer & Composites · Vol. 9, Issue 2, 2021 · pp. 21–29 Read article
-
Design and Analysis of Dual Band Equal Split N-way Wilkinson Power Divider
Abstract: Abstract A Design and analysis of dual band equal split N-way Wilkinson power divider is proposed in this specific work. For this the design of 2-way 4-way, 5-way and 6-way power divider is made with the help of an N-way power divider. An isolation resistor is used to achieve good isolation at output port of Wilkinson power divider. Parameters of the proposed configuration are calculated at the centre frequency of …
Published in Current Trends in Information Technology · Vol. 3, Issue 1, 2013 · pp. 17–20 Read article
-
Design and Analysis of Multi Band Patch with Enhanced Bandwidth
Abstract: In this article, a novel lower edge defected multi-band patch with modified ground structure (or Defected Ground Structure-DGS) with enhanced bandwidth has been presented. The bandwidth can be enhanced by defecting the partial ground and by arc truncation of lower edges of the patch. The antenna was converted into multi-band by defecting the lower corners. The antenna is resonating at multiple bands i.e. 3.7 GHz, 7.87 (~7.9) GHz, 12.19 (~12.2) …
Published in Journal of Microwave Engineering and Technologies · Vol. 7, Issue 3, 2020 · pp. 1–8 Read article