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372 articles for “Pulses”
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Parameters Optimization of EDM of AISI 316 Stainless Steel Material using RSM
Abstract: In this paper, cutting of SS316 material using electro discharge machining (EDM) with a copper electrode using RSM technique is discussed. Electrical discharge machining (EDM) is one of the earliest non-traditional machining processes [1]. These methodologies are used to analyze the effect of each parameter on the machining characteristics and to predict the optimal choice for each EDM parameter such as peak current, gap voltage and pulse on time. It …
Published in Journal of Industrial Safety Engineering · Vol. 3, Issue 2, 2016 · pp. 23–29 Read article
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Optimization of MRR and TWR on Electro Discharge Machining using Taguchi based GRA
Abstract: Electro Discharge Machining (EDM) is one of the most effective nonconventional machining processes in order to obtain better finishing quality result. It is vastly used to machine the most complex as well as intricate shapes so as the productivity increases in a very short time interval. The input parameters are; discharge current, voltage and pulse on time. Taguchi L9 orthogonal array is used to find out the Signal to Noise …
Published in Journal of Industrial Safety Engineering · Vol. 3, Issue 3, 2016 · pp. 26–32 Read article
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Optimization of Process Parameters in EDM Machine with AISI 304 Stainless Steel using TOPSIS
Abstract: The effective solution based on TOPSIS approach to determine the optimal process parameters in die sinking electrical discharge machining. Taguchi L9 orthogonal array is used to gather information regarding the process with less number of experimental runs. Experiments have been conducted using three process parameters such as peak current, gap voltage, pulse on time, with three levels are selected to optimize the multiple objectives. AISI 304 stainless steel as a …
Published in Journal of Industrial Safety Engineering · Vol. 3, Issue 3, 2016 · pp. 33–38 Read article
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Simulation of Three Phase PWM Rectifier for Reduced Harmonics in Line Current using FOPID Controller
Abstract: Abstract: The proposed system is three phases PWM rectifier with current controlled loop which issued for harmonic reduction in A.C. current. The current controlled loop consists of FOPID controller which reduce peak overshoot FOPID controller has benefit in stabilizing DC voltage. The simulation confirms the effectiveness of the proposed method by giving low harmonics output and less amount of power loss in which switching time is controlled to increase energy …
Published in Journal of Instrumentation Technology & Innovations · Vol. 9, Issue 1, 2019 · pp. 29–35 Read article
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LabVIEW based Virtual Instrument for Simulation of Doppler Blood Flow Velocimetry of Umbilical Artery
Abstract: Doppler blood flow velocimetry has become a routine practice for fetal surveillance in high-risk pregnancies. Doppler assessment of various fetal vascular beds helps in determining the relationship between fetal circulation and associated fetal conditions like hypoxia, brain-sparing effect and growth restriction. The umbilical artery, uterine artery and middle cerebral artery are three most studied vascular beds for fetal surveillance. In our research we are focused only on the umbilical artery …
Published in Journal of Instrumentation Technology & Innovations · Vol. 6, Issue 1, 2016 · pp. 1–9 Read article
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Study Stator Voltage Control Method for Induction Motor Torque Control using MATLAB Simulation
Abstract: AbstractThis paper presents a study stator voltage control method for induction motor torque control using MATLAB simulation. This is to improve induction motor speed control. Speed sensor is used to control the speed in feedback and complete simulation of the direct torque control in closed-loop. The system is to be tested by use a MATLAB/ Simulink program. The different control methods are used to control the speed of induction motor …
Published in Journal of Microcontroller Engineering and Applications · Vol. 4, Issue 3, 2017 · pp. 18–24 Read article
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Solar Charge Controllers and their Implementation
Abstract: AbstractSolar energy is the incident energy from the Sun. The main components of this energy are incident light energy and the heat contained in it. The extraction of solar energy may be active or passive. Due to abundance and availability, solar energy is the most attractive alternate in available renewable resources. In the 21st century solar energy is expected to become increasingly attractive as a renewable energy source because of …
Published in Journal of Microcontroller Engineering and Applications · Vol. 7, Issue 1, 2020 · pp. 12–15 Read article
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Soldiers Security System using Arduino
Abstract: AbstractIn today’s era enemy’s warfare is imp factor in our nation’s security, and soldiers play a vital role in it. Soldiers is one of the most imp aspects of any country, they have a responsibility of whole nation so the security of soldiers is considered as an most imp role. It’s our duty to equip soldiers with better advanced technology. There are many concerns regarding the safety of soldier and …
Published in Journal of Microcontroller Engineering and Applications · Vol. 7, Issue 2, 2020 · pp. 35–40 Read article
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Automatic Laser Propulsion Using Binary Mask
Abstract: In the mask propulsion, excimer laser micromachining using binary propulsion has been implemented for flash patterning of a monomicrometer features over wide areas of various substrates. The limit for depth of focus that determines the depth to width front ratios is given and demonstrated for different materials. Binary mask propulsion technique is found to harmonize to reproduce the mask features from the millimeter to the micrometer scale under peculiar focusing …
Published in Journal of Microcontroller Engineering and Applications · Vol. 4, Issue 2, 2017 · pp. 29–36 Read article
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A Simple and Cheap Method of Rapidly Prototyping Power Electronic Converters using Microcontroller
Abstract: This paper shows the study and research done on the design strategy of single phase sinusoidal pulse width modulation (SPWM) waveform. STM32F103C8T6 microcontroller, a part of STM32F103X series, is used for this purpose. Arduino IDE, an open source platform is used for developing the firmware for the SPWM signal generation on the STM32F103C8T6 microcontroller. This is an inexpensive microcontroller that can generate a perfect SPWM waveform of any desired frequency. …
Published in Journal of Microcontroller Engineering and Applications · Vol. 7, Issue 3, 2020 · pp. 13–17 Read article
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Health Monitoring for COVID-19 Similar Disease Using Wearable Device
Abstract: Due to the massive spike in uncertainties triggered by the COVID-19 disease, many countries strategies to reduce the spread by contact tracing. Currently governments around the world battling against pandemic and digital tools are implemented to augment and accelerate contact tracing. Indian government authorities are heavily depending on Aarogya setu App to detect potentially infected population, but second waves showed us that this system is not full proof. Also, there …
Published in Journal of Microcontroller Engineering and Applications · Vol. 8, Issue 2, 2021 · pp. 40–47 Read article
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Analysis of Cascaded Multilevel Inverter Induction Motor Drives
Abstract: The goal of this thesis is to use harmonic analysis to learn more about the performance of various cascaded multilevel inverters. To handle the high power demands of large electric drives and utility applications, innovative power electronics converters are required. As a result, in high power and medium voltage conditions, multiple power converter structures have been offered as an option. A multilayer converter not only achieves high power ratings, but …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 3, 2021 · pp. 22–42 Read article
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Short Circuit MAG/MIG Welding and Fast ROOT Modified Short arc Welding Process for Sheet Metals Welding with Diverse Air Gap
Abstract: The outcome of an analysis allocating with welding of sheet metals with diverse air gap using short circuit MAG welding process and Fast ROOT custom-made short arc welding methods have been presented. Welding turns were made below different conditions and through each run; the diverse process parameters were incessantly observed. It was found that fewer HAZ and maximum welding speed are reached under an exact welding condition with quick ROOT …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 1, 2016 · pp. 47–59 Read article
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Structural, Mechanical, Electrical and Magnetic Properties of Mn–Zn Substituted Ca-hexaferrites
Abstract: In the present investigation, the samples with chemical composition Ca(CoTi)0.5(MnZn)x/2Fe11–xO19 with (x = 0 to 1.0) have been synthesized using perfect stoichiometric proportions of reacting oxides by standard ceramic technique. The pellets of 15 mm diameter were prepared and sintered at 1313 K in air atmosphere for 106 h and characterized by using XRD and SEM. XRD studies of the samples showed hexagonal magnetoplumbite (M) structure with unit cell dimensions …
Published in Journal of Materials & Metallurgical Engineering · Vol. 1, Issue 1-3, 2011 · pp. 99–111 Read article
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A Combination of Shunt Hybrid Active Power Filter and SVC for Power Quality Improvement
Abstract: Power quality problems have become the most important concern nowadays. Custom power devices (CPD) provide a solution for these power quality problems. There are various types of custom power devices. Out of these devices, harmonic filters are considered in this paper. Passive filter and active filter are combined to form shunt hybrid active power filter, (SHAPF). This paper proposes a hybrid device for power quality improvement. The device includes combination …
Published in Journal of Microelectronics and Solid State Devices · Vol. 4, Issue 2, 2017 · pp. 9–17 Read article
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A Novel PWM Based STATCOM Controller for Power Quality Enhancement in Distributed System
Abstract: Static Synchronous Compensator has the capability for the improvement in damping factor and stability by managing the reactive power output. As the STATCOM will itself absorb the reactive power which comes from the distribution line when we apply the capacitive load. To get the higher performance of STATCOM we are mainly depend over control algorithms. As the real power factor has been absorb by the STATCOM at the time when …
Published in Journal of Microelectronics and Solid State Devices · Vol. 8, Issue 2, 2021 · pp. 24–32 Read article
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A Novel Approach of Sensorless Control of BLDC Motor with Z-Source Inverter
Abstract: Brushless dc motors are getting more attention in many areas owing to its compactness, maintenance, high efficiency and low cost. Precise detection of rotor position is essential to achieve high efficiency. Back EMF method is one of the most popular control methods for sensorless brushless dc motor. But this method is not suitable for high-speed operation, for the pulse width of zero-vector may be very short. This paper proposes an …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 3, 2018 · pp. 9–16 Read article
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Single-Phase Two-Stage Multi-Level Inverter Employing Low Number of Switching Devices
Abstract: In recent years, multilevel inverter (MLI) plays a significant role in low or medium voltage applications as a result of generating voltage with reduced harmonic contents. This paper proposes a new version of multi-level inverters (MLI) with reduced switching devices along with reduced harmonics content of output voltage, which results in low switching losses compared with conventional MLI topologies. In addition, the proposed inverter provides low total blocked voltage compared …
Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 2, 2019 · pp. 22–32 Read article
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Comparison of Symmetrical and Asymmetrical Cascaded H-Bridge Inverter with Single DC Source
Abstract: This paper presents the comparison of traditional cascaded H-bridge inverter with isolated DC sources (symmetrical arrangement) and the proposed cascaded H-bridge inverter with single DC source (asymmetrical arrangement). Also, fundamental switching strategy is used to generate the control pulses. A conventional cascaded H-bridge (CHB) inverter requires ‘n’ numbers of DC sources for 2n + 1 levels. Without requiring transformers, the scheme proposed here allows the use of a single DC …
Published in Journal of Power Electronics and Power Systems · Vol. 2, Issue 1, 2012 · pp. 8–17 Read article
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Mitigation of Flicker and Harmonics in Grid Connected DFIG for Power Quality Improvement
Abstract: This paper focuses on the mitigation of voltage harmonics and flicker of a grid connected doubly fed induction generator for wind energy conversion system. The harmonics have been mitigated by an active series filter and flicker levels have been minimized by optimal control of wind turbine output reactive power. The effectiveness of the proposed mitigation strategies has been analyzed for various grid conditions and different wind speeds. The flicker levels …
Published in Journal of Power Electronics and Power Systems · Vol. 4, Issue 2, 2014 · pp. 12–23 Read article