An SL2CC Approach for Eliminating Commutation Failure in HVDC system
Commutation failure in HVDC (High Voltage Direct Current) systems is a critical issue that occurs when the current fails to transfer between thyristors during the inverter operation, potentially leading to system instability, damage to equipment, or even system shutdown. This issue arises due to factors like voltage fluctuations, poor control of current, or sudden changes in system parameters.The SL2CC (Selective Load Commutation Control) approach is an advanced method to mitigate commutation failure in HVDC systems. It is specifically designed to prevent the occurrence of commutation failure by selectively controlling the inverter's load and ensuring that the voltage and current waveforms remain stable under varying operational conditions. The core concept of SL2CC involves adjusting the control signals in real-time to ensure smooth transitions between the thyristors during the commutation process.
Smart Stabilization Techniques in Power Systems
A power system stabilizer (PSS) installed in the excitation system of the synchronous generator improves the small-signal power system stability by damping out low frequency oscillations in the power system. It does that by providing supplementary perturbation signals in a feedback path to the alternator excitation system.In our project we review different conventional PSS design (CPSS) techniques along with modern adaptive neuro-fuzzy design techniques. We adapt a linearized single-machine infinite bus model for design and simulation of the CPSS and the voltage regulator (AVR). We use 3 different input signals in the feedback (PSS) path namely, speed variation(w), Electrical Power (Pe), and integral of accelerating power (Pe*w), and review the results in each case.For simulations, we use three different linear design techniques, namely, root-locus design, frequency-response design, and pole placement design; and the preferred non-linear design technique is the adaptive neuro-fuzzy based controller design.The MATLAB package with Control System Toolbox and SIMULINK is used for the design and simulations.
Graphene/Nanoporous Silica
This study develops a single-layer broadband and wide-angle antireflective (AR) coating with a hydrophobic surface to prevent environmental contamination. Porosity was introduced into the silica film matrix using an acid-catalyzed sol-gel method with polyethylene glycol (PEG) as a porosity modifier. Silica sol modified with PEG4000 achieved optimal porosity (2-4 nm) and the highest transmittance (98.2%). A graphene layer was added to enhance hydrophobicity, achieving a contact angle of 105.3簞, compensating for a slight transmittance reduction (1.15%). Atomic force microscopy and field emission scanning electron microscopy confirmed increased porosity and groove-like surface morphology. Contact angle measurements indicated strong van der Waals interactions between the porous silica film and graphene, leading to a hydrophobic and anti-corrosive AR coating.
IOT Based Smart Energy Meter Using Theft Detection
The book "IoT Based Smart Energy Meter Using Theft Detection" introduces an intelligent and secure solution for modern energy monitoring systems. It focuses on the development and implementation of a smart energy meter integrated with Internet of Things (IoT) technology to monitor real-time power consumption and detect electricity theft.This smart system aims to reduce human error, prevent unauthorized electricity usage, and promote efficient energy management. It enables utility providers and users to access live consumption data remotely and receive instant alerts in case of any tampering or abnormal activity. The book discusses the design methodology, components used, communication protocols, and theft detection techniques in detail.With a practical and application-based approach, this book serves as a valuable guide for engineering students, educators, and industry professionals interested in smart energy solutions and IoT innovations in power systems.
Fabrication of electrical control panel using PLC
The main aim of this thesis is to familiarize with use and application of PLC and design a practical control panel for external plunge grinding machine. Then by simulating all the available options, found out best suitable system, which can meet the industrial requirement. This thesis demonstrates the PLC in grinding application for external plunge machine. The report contains the simulation of control panel for grinding machine is done with GX-Developer and GX-Designer software.
Beyond the Edison-Tesla War
Beyond the Edison-Tesla War challenges conventional wisdom about electricity, urging a reevaluation of how we perceive and manage energy. The historic rivalry between Thomas Edison and Nikola Tesla-DC versus AC-established an energy paradigm that, while revolutionary at the time, has led to systemic inefficiencies and energy waste. This book posits that energy should be understood as a continuous flow rather than a static resource. It suggests that misinterpretations of thermodynamic principles, particularly the Zeroth Law of Thermodynamics, have led to inefficient energy storage and conversion methods. By advocating for a paradigm shift in our energy systems-focusing on movement and flow-the author proposes a more seamless integration of energy storage within an ongoing energy continuum. Nature provides energy in abundance-through lightning, thunder, waves, the sun, and wind-but our inability to predict its timing has led to the construction of oversized, inefficient storage systems. By understanding that energy is movement, not containment, we can rethink battery storage as part of a seamless energy continuum.
On the Various Forces of Nature and Their Relations to Each Other
Experiments and Observations Relative to the Influence Lately Discovered by M. Galvani and Commonly Called Animal Electricity
An Essay to Shew the Cause of Electricity; and Why Some Things Are Non-Electricable.
On the Various Forces of Nature and Their Relations to Each Other
Smith-Purcell Radiation
Smith-Purcell radiation is the name given to the radiation produced when a charged particle beam, usually electrons, passes close to the surface of a metallic grating. The wavelength of the emitted radiation depends on the period of the grating and on the angle of observation. This makes this phenomenon a very useful tuneable source of radiation in the far-infrared (or THz) part of the spectrum, where tuneable sources are scarce. Moreover, a spectral analysis of the radiation can be used to reconstruct the time profile of the very short (picosecond or sub-picosecond) electron bunches that gave rise to this radiation. This is a parameter that is of interest to accelerator designers and users. The book is aimed primarily at experimentalists but starts with a relatively simple theoretical description of the origin of this radiation and then discusses its application either as a beam diagnostic tool or as a tuneable source of THz radiation. There is also a brief overview of other THz sources in order to allow the reader to assess the advantages of Smith-Purcell radiation.
Experimental Study on Transformerless Grid-Connected PV Inverter
Advancing Renewable Energy through PMSG and Control Techniques
Electrodynamics and Special Theory of Relativity
This textbook offers you a profound understanding of the core concepts in electrodynamics and the special theory of relativity. Emphasis is placed on establishing strong mathematical fundamentals while also equipping you with problem-solving skills crucial for mastering these disciplines. It covers electromagnetic theory, encompassing Maxwell's equations and electromagnetic wave theory as well as special theory of relativity, including space-time principles and the Lorentz transformation.
Optimization of Coordinated Thermal-Wind-Solar Power Generation
Wide-Area Damping of Power Systems Oscillations using Model Predictive
Fault-Tolerant in Voltage Source Inverter for Induction Motor Drive
