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Courses » Electrical Machines - I

Electrical Machines - I

ABOUT THE COURSE

The operational principle of Transformers and Direct Current (DC) Electrical Machines are covered in this course. Both the single-phase and three-phase transformers are analyzed in details considering magnetic circuit design, parallel operation, various connection diagrams, etc.Thereafter, the DC machines are presented starting from their construction, principle of operation, starting, braking and speed control methods.  All of the topics are presented in a lucid and interactive manner, such that at the end of this course, students will get a good understating on the aforesaid areas. Assignments with numerical problems are provided on each topic to further improve the understanding and to develop problem solving skills. In some cases, laboratory demonstration is included to give a feel of hands-on-experience. The dynamic simulation of electrical machine using MATLAB/SIMULINK is also included to study the performance during steady state and transients.


INTENDED AUDIENCE

  • Electrical Engineering

PRE-REQUISITES 
  • Circuit Theory

INDUSTRY SUPPORT – LIST OF COMPANIES/INDUSTRY THAT WILL RECOGNIZE/VALUE THIS ONLINE COURSE
  • Nil

    12177 students have enrolled already!!

    COURSE INSTRUCTOR 


    Prof.Debaprasad Kastha



    Prof.Suman Maiti was born in Paschim Medinipur, West bengal, India, in 1979. He obtained his Bachelor degree (2002) and Master degree(2004) in Electrical Engineering from Jalpaiguri Govt. Engineering Collage, North Bengal University and IIEST Shibpur (formerly known as Bengal Engineering and Science University, Shibpur) respectively.  He received his PhD degree in Electrical Engineering from Indian Institute of Technology Kharagur, in 2009.
    His research interests include Machine Drives & Power Electronics, High Power Multilevel Converters for High Voltage Direct Current (HVDC) transmission, STATCOM, integration of renewable energy.
    Since 2009, he had been working with the Research and Development (R&D) group of ABB (India) Ltd.  as an Associate Scientist. He joined in the department of Electrical Engineering, IIT Kharagpur in 2014 as an Assistant Professor.
    Dr. Maiti has received 2008-best-paper-third-prize-award from the IEEE-IES electrical machine technical committee and best paper presentation award in National Power Electronics Conference (NPEC) - 2005.
    Dr. Maiti has published around twenty articles in the national/international journals and conferences which got 583 citations (h-index = 9, i10-index = 8) so far.  He also holds four international patents.
    Dr. Maiti has served as a co-track chair for “TT-1: PCT-Power Devices and Power Converter Topology” in PEDES 2012. He is a member of IEEE since 2013. He is serving as a reviewer for many national and international journals.

    COURSE LAYOUT

    Week 1:     Single Phase Transformers : Operating Principles and Modeling

    Week 2:     Single Phase Transformers : Equivalent Circuit, Testing and Efficiency

    Week 3:     Voltage Regulation; Parallel Operation of Single phase transformer; Harmonics and Switching Transients

    Week 4:     Three phase transformer : Construction and Connections

    Week 5:     Three phase transformer phase groups:  Analysis , Testing and Operation

    Week 6:     Auto transformers; Three winding transformers; Scott connected transformers and Current and potential transformers

    Week 7:     DC Machines : Operation, Construction, EMF and Torque equations

    Week 8:     Armature reaction and Commutation in DC Machines;  Separately excited and shut DC generators

    Week 9:     Compound DC Generator; Interconnection of DC generators; Characteristics of DC Shunt Motors

    Week 10:     Starting , speed control and braking of DC Shunt Motors; Electronic control of DC shunt motors

    Week 11:     Testing of DC shunt motors; DC series motor characteristics, starting and braking.

    Week 12:     Speed control, testing of DC series motors; characteristics of compound DC series motors

    SUGGESTED READING

    1. Principles of Direct Current Machines     by Alexander S Langsdorf, Publisher: Forgotten Books 

    2.   Electric Machinery by Fitzgerald & Kingsley, Publisher: McGraw Hill Education; 6 edition (28 October 2002)

    3.    Electric Machines by D.P. Kothari, I Nagrath, Publisher: McGraw Hill Education; 4 edition (7 July 2010)

    4.    Electrical Machinery by P. S. Bimbhra, Publisher: Khanna (1 January 2011)


    CERTIFICATION EXAM 
    • The exam is optional for a fee. Exams will be on 22 October 2017.
    • Time: Shift 1: 9am-12 noon; Shift 2: 2pm-5pm
    • Any one shift can be chosen to write the exam for a course.
    • Registration url: Announcements will be made when the registration form is open for registrations.
    • The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published.

    CERTIFICATE

    • Final score will be calculated as : 25% assignment score + 75% final exam score.
    • 25% assignment score is calculated as 25% of average of  Best 8 out of 12 assignments.
    • E-Certificate will be given to those who register and write the exam and score greater than or equal to 40% final score. Certificate will have your name, photograph and the score in the final exam with the breakup. It will have the logos of NPTEL and IIT KHARAGPUR. It will be e-verifiable at nptel.ac.in/noc