To achieve the research objective, the scope of research has been determined. The scope of research is to mitigate the high inrush current during start-up of three-phase induction motor which is targeted 50% to 70% of current reduction. This mitigation of the high inrush current is implemented by using soft starter and all works will beconducting and simulated in the PSCAD software. The soft starter parameters was set-up in ideal condition connected to three-phase induction motor which is wound type with varied rated power parameter to 116kVA, 232kVA and 435kVA. The chosen values of rated power are based on standard NEMA Code Letters. The reduction high inrush current during start-up of induction motor is by concept of limiting high starting current. Larger rated power required higher mitigation of inrush current.

In designing the soft-starter to mitigate motor high inrush current, several objectives are neededto be completed. The objectives of this project are ; to study the magnitude and duration of inrush current during the starting of three phase induction motor ; to propose mitigation method on inrush current through implementation of soft starter through firing angle adjustment ; to compare the magnitude current during the start-up and steady state of induction motor between direct online, star delta and soft starter.

Bachelor Thesis from the year 2012 in the subject Engineering - Power Engineering, grade: 10.0, Trichandra College-Tribhuwan University (Institute of Engineering), course: Electrical Engineering, language: English, abstract: In this project, the performance of split-phase motor and three-phase induction motor drives for soft starting is evaluated. The pre systematically investigates and compares the characteristics of a variable voltage fed induction motor drive for two different types of soft starters; one based on IGBT and another based on Thyristor. The novelty of the work lies in the development of simple and flexible models for simulation purpose. This project investigates the influence of the parameters of the machine and of the soft starter on the dynamics of the induction machine start. The situations may reproduce actual situations occurred in practice, for example, the variation of initial voltage Vi, modification of the start time and load value. In this project we have investigated the relation between Total Harmonic Distortion and Power Factor of the IGBT and Thyristor based soft starter. Using an already predefined fire angle characteristic the influence of the initial voltage was also evaluated. Discussion of these results and conclusions as to the near-optimum types of profiles are delineated based on voltage and current profile fed to induction motor, starting times, and distortion in current with change in firing angle.

The book is a collection of high-quality peer-reviewed research papers presented in the Proceedings of International Conference on Power Electronics and Renewable Energy Systems (ICPERES 2014) held at Rajalakshmi Engineering College, Chennai, India. These research papers provide the latest developments in the broad area of Power Electronics and Renewable Energy. The book discusses wide variety of industrial, engineering and scientific applications of the emerging techniques. It presents invited papers from the inventors/originators of new applications and advanced technologies.

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This book comprises select proceedings of the international conference ETAEERE 2020, and focuses on contemporary issues in energy management and energy efficiency in the context of power systems. The contents cover modeling, simulation and optimization based studies on topics like medium voltage BTB system, cost optimization of a ring frame unit in textile industry, rectenna for RF energy harvesting, ecology and energy dimension in infrastructural designs, study of AGC in two area hydro thermal power system, energy-efficient and reliable depth-based routing protocol for underwater wireless sensor network, and power line communication. This book can be beneficial for students, researchers as well as industry professionals.

This book features original papers from International Conference on Expert Clouds and Applications (ICOECA 2021), organized by GITAM School of Technology, Bangalore, India during February 18–19, 2021. It covers new research insights on artificial intelligence, big data, cloud computing, sustainability, and knowledge-based expert systems. The book discusses innovative research from all aspects including theoretical, practical, and experimental domains that pertain to the expert systems, sustainable clouds, and artificial intelligence technologies.

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