Search
1199 articles for “loss”
-
Detection of Criminal Traces during Forced Iris Authentication
Abstract: AbstractAlthough iris recognition system is considered as most robust, hard to counterfeit and the most secure system of biometric authentication. However the existing system fails to detect a forced authentication which might be misused by criminals to unlock the user's account. In this paper we examine the conditions in which a real user is forcibly presented in front of iris scanner on gun point to unlock the account. In this …
Published in Recent Trends in Sensor Research & Technology · Vol. 5, Issue 3, 2018 · pp. 10–18 Read article
-
Smart Grid: New Era of Electric Energy System
Abstract: AbstractIn this paper, we are presenting the idea of new era of electric energy system with the help of smart grid. It is a network of power generation, transmission lines, substations, consumers and the one important in this is feedback loop. This all together makes an effective smart grid. This paper tells about what steps taken by government to improve our technologies with the help of smart grid. We are …
Published in Recent Trends in Sensor Research & Technology · Vol. 6, Issue 3, 2019 · pp. 28–31 Read article
-
Stress Detection System Using Internet of Things
Abstract: A change in electrical potential is caused by the confluence of hundreds of brain neurons, which is reflected by a brainwave. When a neuron has accumulated enough energy, it receives messages from nearby neurons and begins a cyclic discharge process. People also emit brainwaves on a regular basis for this reason. According to researchers at Michigan University's Laboratory of Brain Recognition and Behavior, long-term multitasking reduces productivity, and filtering out …
Published in Recent Trends in Sensor Research & Technology · Vol. 8, Issue 2, 2021 · pp. 16–21 Read article
-
IoT-Based Healthcare Monitoring for COVID-19 Home Quarantined Patients
Abstract: 4–5 days after a person contracts the COVID virus, symptoms typically start to show. It's possible for some people's symptoms to go undetected for up to two weeks. Fever, lightheadedness, headaches, dyspnea, dry coughs that eventually produce phlegm, and in rare instances, loss of taste and smell are the predominant symptoms of COVID 19 infection. Rashes and other skin issues have sporadically been reported. One example is the reddish-purple spots …
Published in Recent Trends in Sensor Research & Technology · Vol. 9, Issue 3, 2022 · pp. 26–31 Read article
-
Fuzzy and PI Based Speed Control of BLDC Motor using Bidirectional Converter for Electric Vehicle Application
Abstract: Fuzzy logic control can be used in BLDC motor to control the four quadrants of operation so as to avoid power loss. In this study, a fuzzy based controller for speed control of BLDC motor is done, and it is compared with the conventional PI controller-based speed control technique. In addition to this, a bi-directional converter is used to achieve battery charging during regeneration and to charge the battery externally …
Published in Trends in Electrical Engineering · Vol. 8, Issue 3, 2018 · pp. 35–45 Read article
-
Simulation of Single Phase AC-DC Power Factor Corrected Converter: A Technological Review
Abstract: This paper is intended to review the significant development of power factor correction by using boost converter topology for single phase power supply to the load in the last decay. Contents in this review paper starts with an introduction of power factor correction by boost converter topology adopted by many industries. Different power factor correction methods are available, which can be applied to get better power factor and low harmonic …
Published in Trends in Electrical Engineering · Vol. 6, Issue 1, 2016 · pp. 72–83 Read article
-
Condition Monitoring of Power Transformer Using Different Techniques
Abstract: Transformer is one of the key equipment of the power system. Power rating of the transformers varies from KVA to several hundreds of MVA. The transformer is an expensive equipment of the power system. Failures of transformer usually lead to substantial profit loss to the utility, potential environmental damage, explosion and fire hazards and expensive repairing or replacement costs; thus, it is desirable that the maximum service life of transformer …
Published in Trends in Electrical Engineering · Vol. 6, Issue 2, 2016 · pp. 1–8 Read article
-
Employing Sweep Frequency Response Analysis for Diagnosing Condition of Power Transformer
Abstract: The power transformer being very expensive plays a tectonic role in power system. Reliability is apogee in power system. Any failure fringing power transformer may lead to substantial monetary loss depending on how much duration it is out of service. On-line monitoring and prognosis of power transformer helps the associated delegate to take decision on subject of maintenance, replacement or continuity of its operation. From accessible vivid methods for condition …
Published in Trends in Electrical Engineering · Vol. 6, Issue 3, 2016 · pp. 26–31 Read article
-
Voltage Stability Study based on New Evolutionary Algorithm
Abstract: This paper describes a PSO optimization algorithm for voltage stability study and its enhancement based on proximity and mechanism analysis. This theorem is implemented based on Gershgorin’s Circle Theorem. The control variables responsible for enhancing the voltage stability limit are generator bus voltages at PV buses, the taps of On-Load –Tap-Changing Transformer. (OLTC), change in reactive power etc. The objective function of proposed algorithm is to maximize the minimal diagonal …
Published in Trends in Electrical Engineering · Vol. 7, Issue 2, 2017 · pp. 21–31 Read article
-
Power Swing Detection and Out-of-Step Prediction Using the Equal Area Criterion
Abstract: During the operating conditions, the modern interconnected power systems are more subjected sudden changes, such as faults, network changes due to line trip outs, and disconnection of a large load or of a generating plant. Such disturbances create power swing among the other generators which forces the remaining generators to adjust and settle to new stable conditions. In some cases, the swings are so large that some generators run out …
Published in Trends in Electrical Engineering · Vol. 7, Issue 1, 2017 · pp. 51–60 Read article
-
An Interline Dynamic Voltage Restorer (IDVR) to Mitigate Voltage Sags
Abstract: Nonlinear load are the vast source for voltage sags. Loads such as arc furnace, large variable frequency drives (VFD) Voltage interruptions can cause severe economic loss to the power system. To protect sensitive loads at the consumer side generally a DVR (dynamic voltage restorer) can be used. DVR is connected in series with the line by injection transformer and it is generally located at the distribution side. DVR is basically …
Published in Trends in Electrical Engineering · Vol. 7, Issue 1, 2017 · pp. 1–7 Read article
-
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
-
PV-Syst based Performance Forecasting of Grid Connected Solar PV System in Indian Scenario
Abstract: The presentation and economy of a solar photovoltaic framework relies upon area and geographic parameters. Anticipating energy productivity is significant for effective arranging and assessment rates. The proposed examination investigates the exhibition assessment of three interconnected geologically associated photovoltaic solar frameworks. In Jaipur, Kolkata and Chennai have been trying a 1 MW solar PV framework for a year. Recreations were performed utilizing PV Syst (a product device created by the …
Published in Trends in Electrical Engineering · Vol. 10, Issue 2, 2020 · pp. 33–39 Read article
-
Design and Performance Analysis of PMDC and BLDC Motor using ANSYS Software
Abstract: This paper connected how to design & simulate of simple PMDC Motor usage ANSYS Maxwell Software. The demand for electrical energy in cars is ascent steady. Permanent Direct Current motor is used for the radiator fan, windshield wipers & washers and to drive blowers for heaters & air conditioners, etc., having brushes which have poor efficiency. It is based on ANSYS Maxwell software which is divided into circuit modeling& field, …
Published in Trends in Electrical Engineering · Vol. 11, Issue 2, 2021 · pp. 12–23 Read article
-
Design and Implementation of BLDC Motor Driven Electric Vehicle Using MPPT Controller
Abstract: Minimal and medium power applications benefit greatly from BLDC motor efficiency, high torque-to-inertia ratio, large energy volume, low maintenance requirements and wide speed control range. Resistance found that by deleting phase current sensors and regulating the basic frequency switching of the voltage source inverter (VSI), the proposed control algorithm lowers power losses caused by high frequency switching. With Modern days fuel prices soaring so high for common people, electrical engineers …
Published in Trends in Electrical Engineering · Vol. 12, Issue 1, 2022 · pp. 41–51 Read article
-
The Impact of Faults in Three-phase Transmission Line and Their Detection Techniques: A Review
Abstract: A three three-phase AC transmission line serves to be a key player in the electric power system. Fault occurrence in the lines disturb the continuity of electricity supply and lead to power losses. Various faults like LG, LL, LLG, LLL, LLLG, symmetrical faults, etc. occur in the transmission lines and tend to reduce the system efficiency. During such abnormal conditions, faults are detected through manual and/or automated systems. In an …
Published in Trends in Electrical Engineering · Vol. 13, Issue 1, 2023 · pp. 33–38 Read article
-
Study of Multiple-Input Multiple-Output DC-DC Converter for DC Microgrid Applications
Abstract: DC microgrids have been developed because of the integration of renewable energy sources and the rising demand for sustainable energy solutions. DC microgrids offer numerous advantages such as increased efficiency, reduced transmission losses, and enhanced reliability. However, the varying output characteristics of renewable sources and the dynamic nature of loads within a microgrid necessitate efficient power management systems. In order to overcome these difficulties, MIMO (Multiple-Input Multiple-Output) DC-DC converters have …
Published in Trends in Electrical Engineering · Vol. 13, Issue 3, 2023 · pp. 16–23 Read article
-
Using Elliot Wave Theory and Fibonacci Retracement and in Algorithmic Trading
Abstract: The analysis technique used in predicting stock prices consists of Fundamental analysis and Technical analysis. These analyses are complex in nature and usually unreliable. The algorithmic trading systems offered today consists of primitive technical analysis techniques such as, simple moving averages, exponential moving average, moving averages convergence and diversions and volume weighted average price. The primitive nature of this techniques makes them very unreliable and has a low success rate. …
Published in Trends in Machine design · Vol. 7, Issue 3, 2020 · pp. 22–29 Read article
-
Evaluation of Acceleration Signal Frequency Results on Bearing Shell Non-destructive Testing, Ultrasonic Waves, Simulation
Abstract: Bearings are used in many rotary machines. Defects in them can cause car breakdowns, loss of production, and even catastrophic accidents. This makes them difficult to maintain and will make it costly to repair and maintain. Therefore, detecting defects in bearing vibrations is an important issue for the industry. On the other hand, error-related frequencies may be identified as discrete frequency lines, and therefore error characteristics cannot be easily identified.For …
Published in Trends in Machine design · Vol. 8, Issue 1, 2021 · pp. 42–47 Read article
-
DESIGN AND MACHINEWORK INVOLVED IN FIRE-FIGHTING ROBOT
Abstract: Due to a lack of technological advancement, battling fires has long been a dangerous job that frequently results in devastating losses. A human being is prone to error, and current firefighting techniques are ineffectual and inefficient. The use of robots rather than people to deal with fire dangers is a recent idea that has gained popularity. Our project entails building a robot that can recognise and put out a fire …
Published in Trends in Machine design · Vol. 9, Issue 2, 2022 · pp. 1–5 Read article