MSc in Electrical Engineering

Course Information Package

Course Unit TitleELECTROMAGNETIC ENERGY CONVERSION
Course Unit CodeAEEE525
Course Unit DetailsMSc Electrical Engineering (Required Courses) -
Number of ECTS credits allocated7
Learning Outcomes of the course unitBy the end of the course, the students should be able to:
  1. Investigate the fundamentals of electromagnetic energy conversion
  2. Analyse the performance of dc machines (motors and generators)
  3. Analyse the performance of induction machines
  4. Analyse the performance of synchronous machines (motors and generators)
  5. Examine the electronic control of ac and dc motors
Mode of DeliveryFace-to-face
PrerequisitesNONECo-requisitesNONE
Recommended optional program componentsNONE
Course Contents

         Introduction: Magnetic field intensity and flux density, B-H curves, electromagnetic induction, voltage induced in a conductor, force on a conductor, direction of force,  torque and mechanical work, power, power of a motor, efficiency of machines, energy transformation, speed of motor/load, power flow in mechanically coupled systems

 

         Direct current generators: principle of operation and characteristics, construction of dc generators

 

         Direct current motors: principle of operation and characteristics

 

         Induction machines: principle of operation and characteristics, properties, motor under load, slip and slip speed, starting characteristics, estimation of electrical parameters, doubly-fed induction machine, selection and application of induction machines, equivalent circuit

 

         Synchronous generators: features of stator and rotor, field excitation and exciters, brushless excitation, generator under load, synchronization and parallel operation, efficiency, power and size of electrical machines

 

         Synchronous Motors: construction, motor under load-calculations, power and torque, torque, losses and efficiency, excitation and reactive power

 

         Single-phase motors: construction, synchronous speed, torque-speed characteristics, efficiency and power factor, split-phase and capacitor motors, shaded-pole motors, universal motor, stepper motors

 

         Application of control theory to machine dynamics: electronic control of dc motors: first quadrant speed control, two-quadrant control, four-quadrant control, drive control modes; control of ac motors: synchronous motor drive, starting methods, self-commutated inverters, PWM drives, torque and speed control of Induction motors

Recommended and/or required reading:
Textbooks
  • Electrical Machines, Drives and Power Systems, 6/E, Theodore Wildi, Pearson, 2006
References
  • Electric Machinery Fundamentals, 4/E, Stephen Chapman, McGraw Hill, 2004
  • Electric Machinery, 6/E, A. E. Fitzgerald Charles Kingsley, Jr.,Stephen Umans, McGraw Hill, 2002
  • Principles of Electrical machines and Power Applications 2nd edition, M.El.Hawary, Wiley-IEEE Press, 2002
Planned learning activities and teaching methods

Students are taught the course through lectures (3 hours per week) in classrooms or lectures theatres, by means of traditional tools or using computer demonstration.

Auditory exercises, where examples regarding matter represented at the lectures, are solved and further, questions related to particular open-ended topic issues are compiled by the students and answered, during the lecture or assigned as homework.

Topic notes are compiled by students, during the lecture which serve to cover the main issues under consideration and can also be downloaded from the lecturer’s webpage. Students are also advised to use the subject’s textbook or reference books for further reading and practice in solving related exercises. Tutorial problems are also submitted as homework and these are solved during lectures or privately during lecturer’s office hours. Further literature search is encouraged by assigning students to identify a specific problem related to some issue, gather relevant scientific information about how others have addressed the problem and report this information in written or orally.

Students are assessed continuously and their knowledge is checked through tests with their assessment weight, date and time being set at the beginning of the semester via the course outline.

Students are prepared for final exam, by revision on the matter taught, problem solving and concept testing and are also trained to be able to deal with time constraints and revision timetable.

The final assessment of the students is formative and summative and is assured to comply with the subject’s expected learning outcomes and the quality of the course.
Assessment methods and criteria
Assignments20%
Tests30%
Final Exam50%
Language of instructionEnglish
Work placement(s)NO