Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Department of Electrical Engineering

VIT Unitversity

School of Electrical Engineering

Vellore Campus

World University root node

Advances in Intelligent Systems and Computing Soft Computing for Problem Solving

Application of Wind-Driven Optimization for Decision-Making in Economic Dispatch Problem

Modular multilevel converter (MMC) becomes furthermost promising topologies especially for medium or high voltage (HV) applications. A typical application of MMC is to control the active power as well as reactive power. This paper presents the design of decoupled current controller for a grid connected MMC. The proposed controller gives an efficient and decoupled control of active power and reactive power then substantially improves MMC dynamic response. However, the performance of MMC depends on the controller’s parameters. The tuning of controller’s parameters depends on the desired output for disturbance applied to the input. The effectiveness of MMC is evaluated by transient simulation with decoupled current controller parameters. The transient simulation is done by MATLAB/Simulink using three-phase detailed model. © 2020, World Academy of Research in Science and Engineering. All rights reserved.

International Journal of Emerging Trends in Engineering Research

Design of decoupled current controller for grid connected modular multilevel converter

The multimodal non-identical generators having close frequency modes may complicate the design of Subsynchronous Damping Controller (SSDC). In this paper, we propose a multimodal SSDC using Kalman Filter (KF) to damp Subsynchronous Resonance (SSR). The proposed SSDC is incorporated with Static Synchronous Series Capacitor (SSSC). The system is adapted from the IEEE First Benchmark Model (FBM) with two non-identical generators in parallel. One of the generators has a six-mass mechanical system and other has a four-mass mechanical system. The KF based SSDC is designed to adjust the SSSC injected voltage as to suppress the subsynchronous currents flow to generators. The parameters of KF based SSDC are selected to enrich the torsional modes of both generators. The results show that the peak negative damping viewed at both generators is substantially reduced with proposed KF based SSDC and mitigate SSR. © 2020, World Academy of Research in Science and Engineering. All rights reserved.

Analysis and mitigation of multimodal ssr using kalman filter based ssdc in non-identical generators

The synchronous generators tend to generate oscillations if it is faulted. The oscillations can cause the frequency change in the connected system which may also be disconnected from the grid. To make the synchronous machine stable even under fault conditions many research works have being done. The stability enhancement is the one which reduces the oscillations by controlling the field of the synchronous machines. Since the distributed generations are increasing nowadays, the PMSG is more familiar in offshore wind power generation. When this power is penetrated into the system, there are some problems. Therefore, the entire system needs to maintain stability. For this purpose, SSSC is used more for the stability. This paper also deals with the combination of SG with PMSG connected to infinite bus system and also analyzed for its stability. © 2020, Springer Nature Singapore Pte Ltd.

Lecture Notes in Electrical Engineering Advances in Communication, Signal Processing, VLSI, and Embedded Systems

Stability Improvement Using SSSC in Synchronous Generation System with PMSG-Based Offshore Wind Farm

Renewable energy has slowly come to the forefront of energy production techniques in the world with many countries investing more and more into the renewable sector. Developing country like India with 1.324 billion population as on 2016 has been investing huge amount of money on the renewable sources for meeting their demand. The aim of this paper is to understand how educational institutions are utilizing renewable energy sources and managing energy in meeting their loads. VIT University, Vellore Campus, Tamil Nadu is taken for case study in studying the technical and economic aspects involved in the effective usage of renewable sources. Various challenges involved with respect to educational institutions and energy saving mechanisms are also discussed in this paper. © 2020, Springer Nature Singapore Pte Ltd.

Renewable Energy Management and Implementation in Indian Engineering Institutions—A Case Study

This era is the part of the fast-growing world and it is thriving more in the field of advancement of technology. Power electronics and drives are one of the major fields that is getting updated every day. Due to increased power generation capacity, improved power qualities, increased automation, and improved capabilities, the electric propulsion has replaced mechanical propulsion. Similarly, the variable speed motors have replaced transverse motor starters to save energy and reduce load instability. With the detailed structure and working of the marine electric propulsion system, this paper focus on reviewing about the various power electronic devices and converter configurations that are used in marine applications, specifically in the propulsion system. Moreover, the detailed assessment of different motor and drive schemes employed in propulsion system is carried out. Further, the review will shift its centre towards controlling drives, which includes various control strategies and control techniques. © Published under licence by IOP Publishing Ltd.

Department of Energy and Power Electronics

Fulltext

IOP Conference Series: Materials Science and Engineering

A Review on Power Electronics and Drives in Electric Propulsion System

The high-impedance arc fault (HIAF) is a result of the interaction between the current-carrying conductor and thehigh-impedance surface. This study presents a detailed and comparative time-frequency based analysis for the classification ofdifferent arcs, generated by the interaction of a broken conductor and different arcing surfaces. The real-time arcing voltagesignals are considered as the basis of the whole time-frequency based analysis from a medium voltage distribution line. In thisproposed approach, empirical mode decomposition (EMD) is used to study the real-time arc voltage signals of various surfaces.The intrinsic mode functions obtained by the application of the EMD technique is used as the input to various machine learningtechniques, which later successfully classifies different HIAFs from their harmonic footprints. The Stockwell transform (ST) isadditionally applied to the same test cases, and the classification of the arc is performed using similar learning algorithms to geta quantitative view of both outcomes of EMD and ST towards the selection of appropriate signal processing technique andmachine learning algorithm for the same. © 2020 The Institution of Engineering and Technology.

IET Generation, Transmission and Distribution

Classification of arc fault between broken conductor and high-impedance surface: An empirical mode decomposition and Stockwell transform-based approach

Department of Mathematics

School of Advanced Sciences

IEEE Sensors Journal

Investigating Time Volatility Magnetic Field of the Jovian Moon: Callisto Using Magnetometer Sensor

A photonic crystal (PhC) based optical component paves a path to the upcoming all-optical computer processors. All the components can be realized with the help of PhCs. In particular, optical gates have played a major part in the development of all-optical half adders which has lead to the bloom of optical computing technology. In this paper, a PhC based optical half adder is proposed and a brief analysis is carried out for the different crystal structures and lattice patterns. The efficiency of the device is analyzed by providing proper distinct space in output power between logical '0' and '1' states and it operates well even in the reduced input power level. The error can be minimized while identifying the logical states (logic '0' and logic '1'), by setting a threshold limit for output power. The threshold level is fixed such that if it is greater than 0.7 µW, it is considered as logic '1', and if it is less than 0.35 µW, then it will be taken as logic '0'. The device with circular crystals in a hexagonal lattice provides a better contrast ratio of 12.55 dB and 9.29 dB for 'sum' and 'carry' respectively. The miniature size of the proposed device depicts that this device is compatible with photonic integrated circuit (PIC) applications. © 2020 Astro Ltd.

Department of Communication Engineering

School of Electronics Engineering

Laser Physics

Photonic crystal based all-optical half adder: A brief analysis

This paper presents a Software-In-the-Loop (SIL) simulation of the Single Machine Connected to Infinite bus (SMIB) with Static Synchronous Series Capacitor (SSSC).The linearized model of SMIB with SSSC is developed in MATLAB/Simulink using the differential and algebraic equations of the system. The controller for SSSC is modeled in typhoon HIL 402, a Real-Time (RT) emulator. The Real-Time Interface (RTI) of dSPACE is used to implement the Input/output (I/O) capabilities to the Simulink model. Subsequently, the model of SMIB with SSSC in MATLAB/Simulink is interfaced to typhoon HIL 402 through dSPACE. The performance of the type-1 controller is tested for step change in the mechanical input torque and reactive voltage reference. The results of SIL testing with two digital platforms show excellent transient response under different operating conditions. © 2020, Research Trend. All rights reserved.