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109 articles for “Df”
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Strengthening Low Voltage Ride-Through in Wind Energy Systems: A Comparative Study of DVR and STATCOM
Abstract: This study looks at the various methods used to improve the low-voltage ride-through (LVRT) capabilities of wind turbine systems (WT) that are based on double-fed induction generators (DFIG). The Type-III WT machine, which is mostly based on DFIG, is instantly connected to the grid without the digital power interface, making the terminal voltage or reactive electricity output unmanageable. This is because the world utilizes between 20% and 25% of renewable …
Published in Journal of Power Electronics and Power Systems · Vol. 14, Issue 3, 2024 · pp. 47–62 Read article
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Effect of Geometry, Material and Blank Holder Force on Formability of BIW parts
Abstract: The major constituent of any car body consists of about 400 sheet metal stamped parts. Geometry and material of these parts is not uniform. In order to design these parts for any car, it is essential to know how these parts are manufactured. During our study of the manufacturing processes of these parts, we found that the part designs are repeatedly sent back to the body design team for change …
Published in Journal of Automobile Engineering and Applications · Vol. 2, Issue 1, 2015 · pp. 29–37 Read article
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Analysis and Design of Decoder Using Different Adiabatic Technique
Abstract: AbstractThe CMOS logic circuit depends upon charging and discharging of the capacitive load. This is one of the major sources of power dissipation. Adiabatic circuits are used to minimize the power dissipation. These circuits are based on feeding the charge back to power supply instead of discharging it to ground. The paper presented here is based on adiabatic logic style, PFAL (Positive Feedback Adiabatic Logic) and DFAL (Diode Free Adiabatic …
Published in Journal of Electronic Design Technology · Vol. 9, Issue 1, 2018 · pp. 24–29 Read article
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The Emerging Technologies in the Field of Semiconductors Along with the Use of the System on Chip
Abstract: An entire electronic or computer system can be combined onto a single platform using a system on chip, which is effectively an integrated circuit. The primary objectives underlying the development of this system on chip are to decrease energy waste, cut costs, and decrease the area occupied by massive systems. Students can understand and experience many methods utilised at each level of the design hierarchy using this strategy. The expansion …
Published in Journal of Semiconductor Devices and Circuits · Vol. 10, Issue 1, 2024 · pp. 8–15 Read article
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Analysis of Doubly Fed Induction Generator with Effect of Various Design Parameters
Abstract: Increasing demand for electricity requires developing new generation techniques which fulfil the demand and keep the environment clean. As per the survey, in the category of renewable energy, wind power plants play an important role in the power generation. In the wind energy generation system, a doubly fed induction generator (DFIG) is more popular. In this paper, the performance of DFIG investigated with different design parameters. Study the effect of …
Published in Trends in Electrical Engineering · Vol. 8, Issue 2, 2018 · pp. 10–18 Read article
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A Pre Experimental Study To Assess The Effectiveness Of STP Regarding Behavior Problem (Nail Biting, Pica, Conduct Disorder, Enuresis, Temper Tantrum) Among School Children Aged Between 10 – 15 Year In Selected School, Kashmir Province, Jammu & Kashmir.
Abstract: The primary aim of the study to assess the impact of structure teaching program on knowledge of school children regarding behavior problem with pica, enuresis, temper tantrum, nail biting, conduct disorder). Nursing is a profession that to be developed and emphasized with deep commitment to research. However it is only recently than nurses. In general has recognized the acute need for nursing research. In fact the future of nursing science …
Published in Research and Reviews: A Journal of Neuroscience · Vol. 13, Issue 2, 2023 · pp. 1–7 Read article
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Utilizing circulation-derived cancer cells to evaluate patients with surgically treated stages I–IIIA NSCLC throughout the preoperative phase
Abstract: Context: When a tumor is considered resectable, surgery is viewed as the primary treatment approach for both early-stage and locally advanced non-small cell lung cancer (NSCLC). One of the most exciting areas of cancer research in the past ten years is liquid biopsy, which offers a practical non-invasive method for cancer detection and tracking. Circulating tumor cells (CTCs) have been linked to a worse prognosis and increased chance of relapse …
Published in Research and Reviews : Journal of Surgery · Vol. 13, Issue 3, 2024 · pp. 17–28 Read article
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Self-tuning Adaptive Control of Rotor Voltage of Doubly Fed Induction Generator in Wind Farms
Abstract: The dynamic performance of a doubly fed induction generator (DFIG) in the wind farms can be enhanced through appropriate converter controls. This article presents a self-tuning control strategy for a DFIG rotor voltage which employs pole-shift technique in the discrete system model. From a large number of simulation studies involving various types of disturbances covering a range of operating conditions, it was observed that the online adaptive model based control …
Published in Journal of Control & Instrumentation · Vol. 8, Issue 1, 2017 · pp. 17–29 Read article
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Modeling and Control of A Grid Connected Wind Turbine Power System Under Variable Wind Speeds Using Doubly-Fed Induction Machine
Abstract: This paper focuses on the development of wind turbine system and extracting maximum power for variable speed constant frequency grid connected wind turbine power system with doubly fed induction generator. A voltage oriented control scheme is used for the control of both rotor side and grid side circuit. Pitch control mechanism is implemented for the power limitation at a wind speed greater than the rated speed. The DFIM stator side …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 108–124 Read article
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Applications of Depth-First Search
Abstract: AbstractIn this paper, various applications of depth-first search algorithms (DFS) are surveyed. The value of DFS or “Backtracking” as a technique for solving problem is illustrated by many applications such as cycle detection, strongly connected components, topological sort, and find articulation point in a graph. The time complexity in different applications of DFS is also summarized.Keywords: depth-first search, articulation point, strongly connected component, detecting cycle, graph, topological sort, railway rescheduling
Published in Journal of Computer Technology & Applications · Vol. 4, Issue 2, 2013 · pp. 1–9 Read article
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To Assess the Effectiveness of Jacobson’s Progressive Muscle Relaxation (JPMR) Training on Anxiety Level Among Substance Abusers: A Quasi-experimental Study
Abstract: Substance abuse is unlawful use of drugs, that results in severe negative effects and it is taken into account to be dangerous and abusive. Substance abuse has good variety of long-term and short-term effects. Addiction to drugs and anxiety are both co-morbid conditions. These anxiety symptoms arise as a result of withdrawal symptoms of different substance abusers. Anxiety can be treated both pharmacologically and non-pharmacologically. JPMR relaxation technique is one …
Published in Journal of Nursing Science & Practice · Vol. 12, Issue 3, 2022 · pp. 13–23 Read article
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A quasi experimental study on effect of sponge bath on reducing discomfort among post operative general surgery patients in a selected Hospital at Chandigarh 2011
Abstract: Background: Bathing is considered a necessary and therapeutic nursing intervention since it provides hygienic care for clients. Bathing removes sweat, oil, dirt and micro-organisms from the skin, assists in decreasing body odour and the potential for infection, stimulates circulation and provides clients with a refreshed and comforted feeling. Objective: To study the effect of sponge bath on reducing discomfort among post operative general surgery patients. Methods: Study was conducted on …
Published in Research and Reviews : Journal of Surgery · Vol. 6, Issue 2, 2017 · pp. 1–5 Read article
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A Study to Assess the Knowledge and Attitude Regarding Post Dialysis Dietary Regulations Among Care Givers of Chronic Kidney Disease Patient Undergoing Hemodialysis in Selected Hemodialysis Unit at Agartala, West Tripura
Abstract: Introduction and objectives of the study: - Chronic renal failure is a gradual, irreversible decline in kidney function, leading to uremia. This condition necessitates hemodialysis to manage the body's internal environment. Dialysis becomes essential at the final stage of chronic kidney disease, known as end-stage renal disease. Objectives of the study are as: i) The objectives of this study are: i) To evaluate caregivers' understanding of dietary regulations following dialysis …
Published in Research and Reviews: A Journal of Health Professions · Vol. 14, Issue 2, 2024 · pp. 89–103 Read article
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Intelligent Optimization of Drilling Parameters in Polymer Composites using Machine Learning and Metaheuristic Techniques
Abstract: The study tests different ways to use ML and metaheuristic algorithms to determine the best drilling parameters for polymer matrix composites. The research uses a composite matrix made from 55.25% vinyl ester, 44.0% Nickel–Phosphorous coated glass fiber and 0.75% Al₂O₃ nanowires which are tested for tensile strength (64.57 MPa), flexural strength (85.86 MPa) and impact strength (71.79 kJ/m²). By applying a Taguchi orthogonal array, it is observed that a slower …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1795–1810 Read article
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Speed Control of A Doubly Fed Induction Motor using Integral Plus Proportional Controller
Abstract: Conventionally, the speed control manipulate of Doubly-Fed Induction Motor (DFIM) has been developed primarily which is based on traditional Proportional-Plus-Integral (PI) controller due to its simple construction and implementation. The steady-state error minimization, overshoot removal and disturbance rejection are not possible in which the benefits of PI controller are chosen through trial and errors approach. The steady-state error and disturbance rejection may be viable, if the benefits of Proportional-Plus-Integral controller …
Published in Journal of Power Electronics and Power Systems · Vol. 7, Issue 3, 2017 · pp. 38–46 Read article
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Analysis and Implementation of Carrier Based and Space Vector PWM Techniques on a Three-Phase Voltage Source Inverter
Abstract: This paper presents a comprehensive analysis of carrier based and space vector pulse width modulation (PWM) techniques on a two-level three-phase voltage source inverter (VSI). The results of simulations performed in Matlab/Simulink are compared to the results obtained from the implementation of the PWM schemes on an actual VSI whose PWM signals are generated using dSpace. The analysis of the inverter line to line voltages includes, a fast fourier transform …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 3, 2015 · pp. 125–139 Read article
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Optimizing the Integration of Photovoltaic and Wind Energy Systems for Enhanced Efficiency
Abstract: This work provides a novel approach for integrating a large-capacity doubly excited induction generator (DFIG)-based wind energy system with solarphotovoltaic (PV). The suggested plan offers a practical PV-grid integration solution by utilising DFIG’s grid and rotor side power converters to pump PV power into the grid. This eliminates the requirement for a separate converter for PV power processing. Compared to a comparable rated inverter utilised in traditional PV-grid systems, the …
Published in Journal of Power Electronics and Power Systems · Vol. 13, Issue 2, 2023 · pp. 34–52 Read article
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FROM SPEECH TO SONGS VIA RECITAL – A CASE OF PHASE TRANSITION? A FRACTAL STUDY OF TAGORE’S WORK
Abstract: The work explores the variation of scaling exponents in a song, recitation and reading with the same lyrical content. Detrended Fluctuation Analysis (DFA) have been employed to find the long range temporal correlations (or the Hurst Exponent) present in each form of the auditory signal. Perceptually, it is known that the addition of rhythm and pitch, amplitude modulation distinguish between these different forms of audio signals, but the mathematical analogue …
Published in Trends in Electrical Engineering · Vol. 9, Issue 3, 2019 · pp. 30–36 Read article
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Nonlinear Channel Equaliser using Discrete Gabor Transform
Abstract: ABSTRACTThe adaptive equaliser makes use of adaptive digital filters whose filter coefficients are modified depending on the channel characteristics at the front end of the receiver. The noise introduced in the channel gets nullified and hence the signal-to-noise ratio of the receiver improves. Discrete Gabor Transform (DGT) helps decorrelate input data because of which the convergence speed of the Mean Square Error (MSE) improves considerably. It is found that the …
Published in Journal of Computer Technology & Applications · Vol. 1, Issue 1-3, 2011 · pp. 63–74 Read article
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A Quasi-Experimental Study to Assess the Effectiveness of STP on Hazardous Effect of Smoking Among Adult in PDM University, Bahadurgarh, Haryana
Abstract: Background & Objectives: The study's objective is to evaluate the impact of STP on adults' understanding of the harmful effects of smoking at PDM University in Bahadurgarh, Haryana. Materials & Methods: The current study used a quasi-experimental research design as its approach. With 40 individuals total—20 for the experimental group and 20 for the control group—the study utilized a purposive sampling approach in order to select its sample. Sociodemographic characteristics …
Published in Journal of Nursing Science & Practice · Vol. 13, Issue 1, 2023 · pp. 58–64 Read article