Course syllabus for Electric drive systems for vehicles and vessels

Course syllabus adopted 2021-02-11 by Head of Programme (or corresponding).

Overview

  • Swedish nameElektriska drivsystem för fordon och farkoster
  • CodeEEN140
  • Credits7.5 Credits
  • OwnerMPMOB
  • Education cycleSecond-cycle
  • Main field of studyElectrical Engineering
  • DepartmentELECTRICAL ENGINEERING
  • GradingTH - Pass with distinction (5), Pass with credit (4), Pass (3), Fail

Course round 1

  • Teaching language English
  • Application code 89126
  • Maximum participants90
  • Minimum participants15
  • Block schedule
  • Open for exchange studentsYes

Credit distribution

0121 Intermediate test, part A 2 c
Grading: TH		 2 c
0221 Intermediate test, part B 2 c
Grading: TH		 2 c
0321 Intermediate test, part C 2 c
Grading: TH		 2 c
0421 Laboratory, part D 1.5 c
Grading: UG		 1.5 c

In programmes

Examiner

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Eligibility

Information missing

Course specific prerequisites

Electric machines for vehicles and vessels or equivalent

Aim

Electric drive systems are becoming more and more central in modern propulsion. As an engineer it is therefore important to know the fundamentals of this technology to design and develop propulsion systems. In this course students will learn about the operation of an electric drive system, how to calculate its output power, efficiency, energy loss and how the electric machine is controlled. The course also includes the 3-phase inverter, how DC is converted into AC, the losses in the inverter and how it is used in the drive system. 

Learning outcomes (after completion of the course the student should be able to)

  1. Describe and model ideal components such as diodes, MOSFET, IGBT, capacitors, resistors, DC voltage sources and DC current sources.
  2. Apply Ohm's law, Kirchhoff's law, power law and energy calculation to simple DC circuits.
  3. Describe how lithium-ion battery systems can be constructed and how they can be modeled and calculate voltages and currents that occur in them.
  4. Explain the structure and operation of a 3-phase power electronic inverter and the principle of pulse width modulation.
  5. Perform calculations on 3-phase power electronic inverters and draw the time functions of voltages and currents
  6. Describe the impact of the power electronics on the electrical machine and the surroundings.
  7. Explain the structure and operation of a field-oriented control for a synchronous and induction machine.
  8. For a synchronous and induction machine, design a field-oriented control and speed control based on machine parameters and bandwidth requirements and implement it in a simulation environment and evaluate its performance.
  9. Implement thermal networks for electrical machines and power electronic components in a simulation environment and describe its impact on overload capacity. 

Content

The course is divided into four parts A, B, C and D:
  • A: Basic electrical DC circuits: Voltage, Current, Resistance, Power, Energy, Ohm's law, KVL, KCL, Capacitance, Energy source
  • B: Power electronic inverter: Electric circuit diagram, Switches, PWM, Curve shapes, Efficiency, losses, Overload capacity
  • C: Field-oriented control: Current control (torque) and speed control of the synchronous and induction machine.
  • D: Laboratory work: Measure on stationary operation of a power electronic inverter that drives an induction machine. Simulate a field-oriented control of an induction and a synchronous machine and calculate the system's energy use and losses.

Organisation

The course is carried out with lectures, exercises, laboratory work and intermediate tests. 

Literature

Compendium, lecture notes and handouts.

Examination including compulsory elements

The course examination will involve three intermediate tests and one laboratory work
  1. Part A, 2 points: Basic electrical DC circuits. Examination: intermediate test. The maximum number of points on the test is 30 points.
  2. Part B, 2 points: Power electronic inverter. Examination: intermediate test. The maximum number of points on the test is 30 points.
  3. Part C, 2 points: Field-oriented control. Examination: intermediate test. The maximum number of points on the test is 30 points.
  4. Part D, 1.5 credits: Laboratory work. Examination: The examination takes place during the laboratory work

The grading scale for the three intermediate tests is:
Grade 3 between 12 and 17.9 points
Grade 4 between 18-23.9 points
Grade 5 between 24-30 points

For the final grade it is required that all parts, A, B, C and D are passed and when it is fulfilled the final grade is based on the summation of the points from parts A, B and C according to:
Grade 3 between 45-59.9 of the total score from A + B + C
Grade 4 between 60-74.9 of the total score from A + B + C
Grade 5 between 75-90 of the total points from A + B + C 

The course examiner may assess individual students in other ways than what is stated above if there are special reasons for doing so, for example if a student has a decision from Chalmers on educational support due to disability.