...five-phase induction motor drive system was proposed in the late 1970s for adjustable speed drive applications. Since then, a considerable research effort has been in place to develop commercially feasible multiphase drive systems. Since the three-phase supply is available from the grid, there is a need to develop a static phase transformation system to obtain a multiphase supply from the available three-phase supply. Thus, this paper proposes a novel transformer connection scheme to convert the threephase grid supply to a five-phase fixed voltage and fixed frequency supply. The proposed transformer connection outputs five phases and, thus, can be used in applications requiring a five-phase supply. Currently, the five-phase motor drive is a commercially viable solution. The five-phase transmission system can be investigated further as an efficient solution for bulk power transfer. The connection scheme is elaborated by using the simulation and experimental approach to prove the viability of the implementation. The geometry of the fabricated transformer is elaborated in this paper. Index Terms—Five phase, multiphase, three phase, transformer, turn ratio. I. INTRODUCTION ULTIPHASE (more than three phase) systems are the focus of research recently due to their inherent advantages compared to their three-phase counterparts. The applicability of multiphase systems is explored in electric power generation [2]–[8], transmission [9]–[15], and utilization [16]–[33]. The research on six-phase...
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...Design of Five Phase Induction Motor Sanket M. Bhimgade#1 Swapnil C. Chaudhari#2 Roshan B. Durge#3 Vabeihrohnei Chozah#4 Parag P. Salunke#5 Department of Electrical Engineering Dr. Babasaheb Ambedkar Technological University, Lonere, Raigad (MS - 402 103) sanketbhimgade@gmail.com , 2swapnil.28492@gmail.com , 3roshan.durge16@gmail.com , 4pawhrohnei@gmail.com , 1 Abstract: The conversion of electrical energy into mechanical energy has been and continuous to be a dominant form of power transmission for industrial purposes. The alternating current (AC) electric induction motor has been an industry workhouse for electromechanical conversion for over 100 years. This paper introduces the fundamental electric and mechanical principles of 5 phase AC induction motor. In this paper, a generalized formula is proposed for the selection of number of slots required for 5-phase alternative current (AC) machine design and the criterion for selecting the starting points of each phases. Keywords: Induction motor. Five phase, Stator winding. current. The power per phase is P = VP IP cosϕ and the total power is the sum of the amount of power in each phase. If the currents are equal and the phase angles are the same as in Fig. 1, then the load on the system is balanced, the current in the neutral is zero and the total power is [1], =3 cos ∅ Or Or = √3 = 1.73 cos ∅ cos ∅ I. INTRODUCTION In general, the induction machines having three-phase windings...
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...attention in electrical machines with regard to their applications in industrial drives. This paper brings to the fore, various types of electrical machines, their operations, and applications, as well as the method of determining their parameters. Various ways of protecting electric machines against overloads and mechanical faults are also highlighted. It is anticipated that the work presented in this paper will be of immense benefit to practicing engineers especially in areas of machine design, maintenance, and protection. (Keywords: electrical machines, operation design, maintenance, protection, stator) the stator and alternating currents are induced in the rotor by transformer action. In the synchronous machine, direct current is supplied to the rotor and Alternating Current (A.C.) flows in the stator. On the other hand, a D.C. machine is a machine that is excited from D.C. sources only or that itself acts as a source of D.C. [5]. It is a common practice in industry to employ A.C. motors whenever they are inherently suitable or can be given appropriate characteristics by means of power electronics devices. Yet, the increasing complexity of industrial processes demands greater flexibility from electrical machines in terms of special characteristics and speed control. It is in this field that the D.C. machines, fed from the A.C. supply through rectifiers, are making their mark. In this paper, we shall discuss the various types of electric machines,...
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...it is surprising that the average person does not recognize his name or what he did. Over the next few paragraphs the research will discuss Nikola Tesla’s career which includes the invention of alternating current, his ongoing quarrel with Thomas Edison, and his controversial recognition. According to the myth, Nikola Tesla was born at midnight on July 10, 1856 during an electrical storm (Ancient, 2010) in an expiring Empire of Austro-Hungary, modern day Croatia. Milutin Tesla, his father of Serbian origin, was an Orthodox Priest. Nikola wanted to study engineering in a renowned Austrian Polytechnic School but was constantly oppressed by his father who wanted him to also join priesthood. After Nikola contracted Cholera, his father promised him that if he survived he would allow him to pursue his dreams of becoming an engineer (Tesla, 2004). Duka Mandic, Nikola’s mother and also of Serbian origin, was a hard working woman of many talents. She was also an inventor whom made tools and devices for her weaving, carpentry, and other handiwork (Glenn, J, 1994). She was descended from seven generations of priesthood and also supported her husband’s desire to have Nikola follow the same path as his father. During his years at school, Tesla’s physics teacher introduced his class to a new invention called Gramme dynamo. The Gramme dynamo could be used as a motor if it was spun in one direction and if spun in the opposite direction it generated Direct Current (DC). This...
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...Matthew Griffin Andrew Phegley Nathan Smith Alex Turek 1 ORIGINALITY STATEMENT This paper conveys research pertinent to the design and construction of a unique electric vehicle in a form that is easily understood. Unique characteristics include dual, independently controlled A/C drive motors, elimination of traditional mechanical power transmission devices, and traction control software with the ability to make changes several thousand times per second. These original ideas make for an environmentally responsible vehicle with few moving parts. ACKNOWLEDGEMENTS Brocton Barras – Wrote a brief recap of the history of electric vehicles. Joshua Day – Responsible for originality/acknowledgments page, as well as abstract and conclusions. Matthew Griffin – Provided research for innovative control methods section of paper. Andrew Phegley – Wrote a brief description of A/C vs. D/C motors. Nathan Smith – Provided research for the construction of battery packs. Alex Turek – Responsible for introduction, section on the CAN bus, and editorial duties. ABSTRACT The objective of this project is to design and build an electric vehicle that exhibits unique qualities not found in any production vehicle in its class. The vehicle will operate in a similar capacity to the average automobile so as to maintain familiarity to consumers. The vehicle will be powered by independently controlled A/C motors that forgo typical mechanical power transmission devices. Highly intelligent programming...
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...A seminar on Study of working of magnetic levitation trains. By Shubham Sharma Guided by Sagar Shinde Department Of Mechanical Engineering Pad. Dr. Dy Patil Institute Of Engineering, Management And Research Pad. Dr. Dy Patil Institute Of Engineering, Management And Research CERTIFICATE This is to certify that Mr. Shubham Sharma has successfully completed the seminar work entitled “study of working of magnetic levitation trains” under my supervision, in partial fulfillment of bachelor of engineering – mechanical engineering, by university of pune. Date: Place: Guide: Mr. Sagar Shinde Mrs. Amruta Adwant Guide Head, MechanicalEngineering, DYPIEMR Principal, SEAL DYPIEMR AKNOWLEDGEMENT With immense pleasure I am presenting this seminar report on “Study of working of magnetic levitation trains” ...
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...Speed Control of Induction Motor using Fuzzy Logic Approach A PROJECT THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF Bachelor of Technology In Electrical Engineering By Varuneet Varun (Roll 108EE011) G. Bhargavi (Roll 108EE026) Suneet Nayak (Roll 108EE044) Under Supervision of Prof. Kanungo Barada Mohanty Department of Electrical Engineering National Institute of Technology, Rourkela Rourkela- 769008, Odisha © 2011 - 2012 National Institute of Technology Rourkela Certificate This is to certify that the work contained in this thesis, titled “SPEED CONTROL OF INDUCTION MOTOR USING FUZZY LOGIC APPROACH” submitted by Varuneet Varun, G. Bhargavi and Suneet Nayak is an authentic work that has been carried out by them under my supervision and guidance in partial fulfillment for the requirement for the award of Bachelor of Technology Degree in Electrical Engineering at National Institute of Technology, Rourkela. To the best of my knowledge, the matter embodied in the thesis has not been submitted to any other University/ Institute for the award of any Degree or Diploma. Place: Rourkela Date: 11th May, 2012 Dr. Kanungo Barada Mohanty Associate Professor Department of Electrical Engineering National Institute of Technology Rourkela – 769008 i Acknowledgment We are grateful to The Department of Electrical Engineering for giving us the opportunity to carry out this project, which is an integral...
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...Research Report 2005-27 Double Side Control of Wound Rotor Induction Machine for Wind Energy Application Employing Half Controlled Converters D. Panda, T. A. Lipo* Rockwell Automation Advanced Technology Lab, Richmond Heights, Ohio 44143, USA, dpanda@ieee. org *Department of Electrical and Computer Engineering University of Wisconsin, Madison, WI 53706, USA, lipo@engr.wisc.edu isconsin lectric achines & ower lectronics onsortium University of Wisconsin-Madison College of Engineering Wisconsin Power Electronics Research Center 2559D Engineering Hall 1415 Engineering Drive Madison WI 53706-1691 © 2005 Confidential Double side control of wound rotor induction machine for wind energy application employing half controlled converters Debiprasad Panda 1, Thomas .A.Lipo 2 Rockwell Automation Advanced Technology Lab, Richmond Heights, Ohio 44143, USA, dpanda@ieee.org 2 Department of Electrical and Computer Engineering University of Wisconsin, Madison, WI 53706, USA, lipo@engr.wisc.edu 1 Abstract – A double side converter fed wound rotor induction machine control for a wind energy application is proposed in this paper. In order to reduce the cost of a wind generator system, a new configuration using half controlled converters for both the stator and rotor circuit as well as for the line side is proposed. The proposed controller reduces the required KVA rating of both machine side and line side converters, improves the efficiency of the wind generator, helps operating...
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...CHAPTER 1 INTRODUCTION TO HUMAN RESOURCE MANAGEMENT (HRM). 1) WHAT IS HUMAN RESOURCE MANAGEMENT? Human resource management (HRM) is the strategic and coherent approach to the management of an organization's most valued assets - the people working there who individually and collectively contribute to the achievement of the objectives of the business.The terms "human resource management" and "human resources" (HR) have largely replaced the term "personnel management" as a description of the processes involved in managing people in organizations. Human Resource management is evolving rapidly. Human resource management is both an academic theory and a business practice that addresses the theoretical and practical techniques of managing a workforce. The Human Resources Management (HRM) function includes a variety of activities, and key among them is deciding what staffing needs you have and whether to use independent contractors or hire employees to fill these needs, recruiting and training the best employees, ensuring they are high performers, dealing with performance issues, and ensuring your personnel and management practices conform to various regulations. Activities also include managing your approach to employee benefits and compensation, employee records and personnel policies. Usually small businesses (for-profit or nonprofit) have to carry out these activities themselves because they can't yet afford part- or full-time help...
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...Ward-Leonard Motor Generation System Introduction: A control system generally controls, regulates, and updates its output continuously based on present inputs, nature of the system, and the past outputs. In other words, there is a feedback mechanism that is inherent in the system, and is called a closed loop control system. For example, adding an emitter resistance to a common emitter amplifier, results in a negative feedback mechanism in the amplifier system – if the output current increases, the input voltage decreases accordingly so as to reduce the output current; if the output current decreases, then the input voltage increases in order to raise the output current level. Negative feedback thus ensures that the output is always controlled to stay within an optimal range. Similarly other systems may exhibit a positive feedback mechanism. In either case, a control system can be represented as follows: Figure 1: Control System representation In Figure 1, G represents the forward loop function and Fb represents the feedback function. In case the Fb function is absent, the system is reduced to an open loop system. The most popular representation of control systems is using the ‘Block Diagram’ approach (Balakrishnan, 1988). Each component in the system is represented as a block, with its role represented as a mathematical function. From the block diagram representation, the overall function of the system, called the transfer function, is obtained. The transfer function...
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...DESIGN OF FUZZY PID CONTROLLER FOR SPEED CONTROL OF BLDC MOTOR PHASE I REPORT Submitted by ARJUN M Register No. 710012428003 in partial fulfilment for the award of the degree of MASTER OF ENGINEERING in CONTROL AND INSTRUMENTATION DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING ANNA UNIVERSITY REGIONAL CENTRE, COIMBATORE COIMBATORE-641 047 DECEMBER 2013 ii ANNA UNIVERSITY REGIONAL CENTRE, COIMBATORE COIMBATORE-641 047 DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING PROJECT WORK PHASE I DECEMBER 2013 This is to certify that the project entitled DESIGN OF FUZZY PID CONTROLLER FOR SPEED CONTROL OF BLDC MOTOR is the bonafide record of project work done by ARJUN M Register No: - 710012428003 Of M.E. (CONTROL AND INSTRUMENTATION) during the year 2013-2014 Head of the Department Dr.S.N.DEEPA, M.E., Ph.D., Project Guide Mr.P.HARI KRISHNAN, M.E., Submitted for the Project Viva-Voce examination held on Internal Examiner External Examiner iii DECLARATION I affirm that the project titled DESIGN OF FUZZY PID CONTROLLER FOR SPEED CONTROL OF BLDC MOTOR being submitted in partial fulfilment for the award of Master of Engineering (M.E.) in Control and Instrumentation is the original work carried out by me. It has not formed the part of any other project work submitted for award of any degree or diploma, either in this or any other University. Signature of the Candidate ARJUN M Register No.710012428003 ...
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...hypnosis? Aileen McCartney Hypnotherapy and Counselling Skills – Year One - Module One MAIDS1A 12 Word Count: 1984 Tutor: Karen Martin Hypnosis is a well known subject to most people, very often through the drama of the stage or television hypnotist. However, the hypnotic trance is a natural phenomenon that most people will have experienced personally, whether aware of it at the time or not. An example of this might be driving a car along a regular route and arriving at the destination with no memory of the journey, having performed the activity safely and reliably while in another sense being quite detached from the experience. This altered level of consciousness is the starting point for the hypnotic process through an induction which focuses on relaxation, inner experiences, feelings and imagery (Heap & Naish, 2012: 7). It is generally accepted that hypnosis is a different experience to that of being awake or being asleep but debate remains over its true nature within academic and scientific circles (Karle & Boys, 2010:14). This essay will discuss the nature of hypnosis, focusing on the psychological and physical aspects while touching on the role of relaxation. Hypnosis is a complex psychological phenomenon and one which is difficult to find an agreed definition for. Indeed the American Psychological Association definition of hypnosis in 2003 is almost 300 words long but centres around hypnosis being a procedure of suggestions where one person (the...
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...UNIVERSITY OF KERALA B. TECH DEGREE COURSE 2008 SCHEME ELECTRICAL AND ELECTRONICS ENGINEERING I to VIII SEMESTER SCHEME AND SYLLABUS BOARD OF STUDIES IN ENGINEERING AND FACULTY OF ENGINEERING AND TECHNOLOGY UNIVERSITY OF KERALA B.Tech Degree Course – 2008 Scheme REGULATIONS 1. Conditions for Admission Candidates for admission to the B.Tech degree course shall be required to have passed the Higher Secondary Examination, Kerala or 12th Standard V.H.S.E., C.B.S.E., I.S.C. or any examination accepted by the university as equivalent thereto obtaining not less than 50% in Mathematics and 50% in Mathematics, Physics and Chemistry/ Bio- technology/ Computer Science/ Biology put together, or a diploma in Engineering awarded by the Board of Technical Education, Kerala or an examination recognized as equivalent thereto after undergoing an institutional course of at least three years securing a minimum of 50 % marks in the final diploma examination subject to the usual concessions allowed for backward classes and other communities as specified from time to time. 2. Duration of the course i) The course for the B.Tech Degree shall extend over a period of four academic years comprising of eight semesters. The first and second semester shall be combined and each semester from third semester onwards shall cover the groups of subjects as given in the curriculum and scheme of examination ii) Each semester shall ordinarily comprise of not less than 400 working periods each of 60 minutes...
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...gaining due importance of the realization that “Energy Saved is Energy Produced and that too at Economical Cost”. This paper shares the experience of the authors on energy conservation projects carried out in a textile industry situated in Tamil nadu state. Economic and efficient measures of energy conservation have been followed subject to budget constraint and the effects of such measures were realized through reduction in energy cost with the added advantage of environmental safety. 1. Introduction Today, energy and environment are two areas that have sought the greatest attention at the international level. With the issue of the global environment, becoming as important as never before, energy particularly its conservation in industries, has become the main target for all parts of the world that has to be achieved as soon as possible. Textile industries are found to be energy-intensive [4% energy cost in total input cost[ compared to other industries like chemical, food, computer manufacturing, etc.. and hence extensive research has been focused on such industries in the past to reduce the energy cost and the total input cost. In post-independence india, the industrial sector has reached to a level of consuming 50% of total commercial energy available in the country. Indian manufacturing industries like fertilizer, cement, sugar, textile, aluminium, paper, etc.. are found to be highly energy-intensive and their energy efficiency is well below...
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...A Paper Presentation On “Magnetic Levitation Trains” For [pic] ABSTRACT Imagine a train that doesn't touch its track and think of the potential for lower guide way maintenance costs as a result. Imagine a train that speeds along much faster than anything on the highway with a ride as smooth as silk. Imagine that train being capable of speeds higher than any other ground-based transportation system. Maglev can provide this speed and compete directly with airline travel. As stated by American Maglev, "Maglev means magnetically levitated and propelled vehicles. The advantage of maglev is that it can achieve very high speed and acceleration/deceleration performance because the vehicles essentially "fly" at very low altitudes - unlike trains or cars; there is no surface contact or "friction" to slow them down. More speed = more passengers." Only when we have real revenue-producing systems in operation will be able to prove whether this is true or not. In Maglev—which is short for MAGNETIC LEVITATION—high speed vehicles are lifted by magnetic repulsion, and propelled along an elevated guide way by powerful magnets attached to the vehicle. The vehicles do not physically contact the guide way, do not need engines, and do not burn fuel. Instead, they are magnetically propelled by electric power fed to coils located on the guide way. Indeed this is the beginning...
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