Section outline

  • General

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  • Introduction

    EEE 313: Electrical Machines II 

                                                                                        

                                                              



    Instructions/Guideline for the course:

    • All the students registered for this course have to enroll in Moodle.
    • Students can find all the course materials from Moodle.
    • All the students have to submit the soft copy of their "Assignment" in Moodle under assignment section. 
    • One discussion or feedback forum is created under each Module so that  Students can give their feedback. 
    • All the announcements regarding the class will be posted on Moodle. 
    • All the quizzes and presentation will be held on  online (Moodle) and it will be announced before the class.
    • The question pattern and the syllabus for the quizzes, midterm and final exam is given here under each of the section (quizzes, midterm and final)

     Course Objectives:

    • To understand the real applications of Faraday's electromagnetic induction law
    • To enable students to obtain a detailed idea and knowledge about various electrical machines like DC and Synchronous generators and motor
    • To enable students to obtain the knowledge of utilization of solar energy
    • To make the students familiarized with the wind turbine generator

    Course summary:

    • Principle of operation, construction and characteristics of Synchronous generator
    • Principle of operation, construction and characteristics of Synchronous Motor
    • Principle of operation, construction and characteristics of DC generator
    • Principle of operation, construction and characteristics  of DC motor
    • construction and working principle of solar cell
    • construction and working principle of wind turbine

  • Instructor Profile

    Course Instructor(s)

    Zakir Hasan

    Md. Zakir Hasan

    Lecturer

    Dept of EEE, DIU

    Room: 805 (PC)

    Mobile: +8801796-674214

    Email:  zakir.eee0191.c@diu.edu.bd

    Google Site: https://sites.google.com/diu.edu.bd/md-zakir-hasan/home






  • Important Information and resources about the course

    Course Outcome (COs):


    Course Contents:

    Synchronous Generator: excitation systems, equivalent circuit, vector diagrams at different loads, factors affecting voltage regulation, synchronous impedance, synchronous impedance method of predicting voltage regulation and its limitations. Parallel operation: Necessary conditions, synchronizing, circulating current and vector diagram. Synchronous motor: Operation, effect of loading under different excitation condition, effect of changing excitation, V-curves and starting. DC generator: Types, no-load voltage characteristics, build-up of a self excited shunt generator, critical field resistance, load-voltage characteristic, effect of speed on no-load and load characteristics and voltage regulation. DC motor: Torque, counter emf, speed, torque-speed characteristics, starting and speed regulation. Introduction to wind turbine generators Construction and basic characteristics of solar cells.


    • resource icon
      Text Book File

      Electrical Machinery Fundamentals - by Stephen J. Chapman,

    • resource icon
      Reference Book File

      Electrical Technology (AC & DC Machine) - by B.L Theraja& A.K. Theraja, Vol. II,

    • resource icon
      Assessment Policy File
    • resource icon
      Course Profile

    • Google Class room code :  

             Section- (PC-A) EVE: d3vyjb6


             
      Class routine
      Section  SundayWednesday
       PC-A  6.00 pm- 7.30 pm 6.00 pm- 7.30 pm




  • Live Class link

  • Module 1: Construction and equivalent circuit of Synchronous Generator


    Lecture Objectives:

    • To teach the students about the construction and the formation of the equivalent circuit of a synchronous generator


    Lecture Outcomes:

    At the end of this lecture the student will be able to understand:

    • Details of excitation system
    • Synchronous Speed
    • Induced voltage
    • Armature reaction
    • Equivalent circuit


    Lecture Contents:

    • Stator construction
    • Rotor/Field construction
    • Brush less excitation system
    • Interaction between stator and rotor magnetic field
    • Mathematical model of armature reaction
    • exact and simplified equivalent circuit

  • Assignment

    • assign icon
      Assignment 1
      Students must
      View
      Make a submission

      Answer the following questions for Assignment 1

      1. Discuss about the brush less excitation system.

      2. Describe the formation procedure of equivalent circuit of synchronous generator.

    • url icon
      class recording URL
      Students must
      View

  • Quiz

    Date: 11/10/20
    Time: 8-11 pm
    BLC opening and closing time: 55 minutes
    syllabus: Module 1

    • quiz icon
      quiz-1
      Students must
      Mark as done

  • Module 2: Power flow diagram and Voltage regulation of Synchronous Generator

    Lecture Objectives:

    • To teach the students about the induced voltage ,power flow diagram and voltage regulation of a synchronous generator.

    Lecture Outcomes:

    At the end of this lecture the student will be able to :

    • Understand power flow diagram of a synchronous generator
    • know about induced voltage of a synchronous generator
    • Determine voltage regulation of a synchronous generator

    Lecture Contents:

    • Vector diagrams at different loads
    • synchronous generator power flow diagram
    • induced torque and voltage equation
    • voltage regulation

  • Module 3: Parallel operation of Synchronous Generator


    Lecture Objectives:

    • To teach the students about the vector diagram and parallel operation of synchronous generator so as to they can operate the machines in parallel in the real world.


    Lecture Outcomes:

    At the end of this lecture the student will be able to :

    • Understand the vector diagram of synchronous generator
    • Understand the necessity of parallel operation
    • Learn about the conditions of parallel operation
    • Learn about the procedure of parallel operation


    Lecture Contents:

    • Advantage of parallel operation
    • Condition of parallel operation
    • Three light bulb method for synchronization
    • Operation of synchroscope
    • Synchronizing current and power
    • vector diagram

  • Quiz-2

    Syllabus: ( Module 2 and Module 3)

    Date: 28-10-20

    Time: 9:00pm-12:00pm

    Total time: 60 min


    • quiz icon
      Quiz-2
      Students must
      View

  • Module 4: Introduction of Synchronous Motor


    Lecture Objectives:

    • To teach the students about the construction and working principle of synchronous motor so that the student can apply their knowledge in practical field.


    Lecture Outcomes:

    At the end of this lecture the student will be able to :

    • Learn about the working principle of synchronous motor
    • Learn about the torque-speed characteristic curve of synchronous motor
      of synchronous motor
    • Learn about the  effect of load changes on a synchronous motor

    Lecture Contents:

    • Equivalent circuit of a synchronous motor
    • Torque-speed characteristic curve of synchronous motor
    • The effect of load changes on a synchronous motor

  • Introduction for Midterm Examination

    Date: 03/11/20
    Time: 4 pm-8 pm
    BLC opening and closing time: 1.5 hour

    Midterm Syllabus: All the topics covered under modules 1 to 4


  • Assignment 2

    • assign icon
      Assignment 2
      Students must
      View
      Make a submission

      Describe the effect of load changes and field current changes of a synchronous motor.

  • Module 5: Characteristics of Synchronous Motor


    Lecture Objectives:

    • To teach the students about different characteristics of  synchronous motor so that the student can apply their knowledge to solve the problem related to that motor.


    Lecture Outcomes:

    At the end of this lecture the student will be able to :

    • Understand the effect of Field current changes of a synchronous motor
    • Understand the effect of the change of field excitation on a synchronous motor
    • Solve the problems related to the synchronous motor


    Lecture Contents:

    • Effect of excitation change
    • Application of synchronous motor
    • V-curves of synchronous motor
    • Problem solution

  • Module-6: Power factor correction of a synchronous motor

    Lecture Objectives:

    • To teach the students about Power factor correction of the synchronous motor so that the student can apply their knowledge to solve the problem related to that motor.


    Lecture Outcomes:

    At the end of this lecture the student will be able to :

    • Understand the Power factor correction of a synchronous motorr
    • Solve the problems related to the synchronous motor


    Lecture Contents:

    • Power factor correction
    • Difference between synchronous motor and generator
    • Problem solution

  • Quiz-4

    Date: 9/12/2020
    Time:7-10 pm
    BLC Open and Closing time:3 hours
    Exam Time: 60 minutes
    • quiz icon
      Quiz-4
      Students must
      View

  • Module 7: Introduction to Wind turbine and solar cell


    Lecture Objectives:

    • To teach the students about the working principle,  construction and the characteristics of wind turbine generator (WTG) and solar cell .


    Lecture Outcomes:

    At the end of this lecture the student will be able to :

    • Understand the working principle of WTG and solar cell
    • Learn about the different feature of WTG and solar cell
    • Learn about the merits and demerits of WTG and solar cell


    Lecture Contents:

    • construction of solar cell
    • working principle of solar cell
    • classification 
    • construction and working principle of WTG
    • classification
    • Merits and demerits and challenges of WTG  and solar cell


  • Presentation

    Topic: Full syllabus(Any topic)

    Date: 

    Submission Deadline: 15/12/2020

  • Module 8: Working principle and construction of DC Generator


    Lecture Objectives:

    • To teach the students about the detail construction and principle of operation of a DC generator.


    Lecture Outcomes:

    At the end of this lecture the student will be able to :

    • Understand voltage generation procedure of a DC generator
    • Understand the function of commutator
    • Learn about the construction of DC generator
    • Solve the problems of DC generator 


    Lecture Contents:

    • Construction of DC generator
    • Working principle
    • Commutation
    • induced voltage equation
    • Classification
    • Problem solution

  • Module 9: DC Generator characteristics


    Lecture Objectives:

    • To teach the students about the different characteristics of a DC generator so that they can analyze the behavior of the machine practically.


    Lecture Outcomes:

    At the end of this lecture the student will be able to :

    • Understand voltage build up characteristics of a DC generator
    • Understand the critical resistance
    • Learn about the load characteristics
    • Understand the voltage regulation 


    Lecture Contents:

    • No-load voltage characteristics
    • Voltage build-up of a self excited shunt generator
    • Critical field resistance
    • Load-voltage characteristic
    • Effect of speed on no-load  characteristics
    • voltage regulation


  • Module 9: Introduction to DC Motor


    Lecture Objectives:

    • To teach the students about the working principle,  different characteristics and speed control of DC motor.


    Lecture Outcomes:

    At the end of this lecture the student will be able to :

    • Understand working principle of DC motor
    • Understand significance of back e.m.f.
    • Learn about the torque-speed  characteristics
    • Understand the speed regulation


    Lecture Contents:

    • Principle of motor
    • Back emf
    • Torque
    • Torque/speed, torque/current, speed/current characteristic
    • speed  regulation
    • Speed control
    • starting