ECE4054 - Electrical energy - power converters and motor control - 2017

6 points, SCA Band 2, 0.125 EFTSL

Undergraduate - Unit

Refer to the specific census and withdrawal dates for the semester(s) in which this unit is offered.



Organisational Unit

Department of Electrical and Computer Systems Engineering


T Czaszejko

Not offered in 2017


The unit looks at the use of power electronic converters in applications such as variable speed motor drives and electrical grid energy control. It analyses voltage and current source inverters operating under open and closed loop regulation, develops advanced models of AC motors, and then integrates these concepts into variable speed drives for AC motors. A similar approach is used for DC motor drive systems, first using multipulse SCR converters and then hard switched converters for more advanced systems based on brushless DC and stepper servo motors. Finally, topologies such as cycloconverters, matrix converters and multilevel converters are presented, together with typical applications.


To understand:

  1. The way in which electrical motors can operate at variable speeds
  2. The use of power electronic converters for variable speed motor control
  3. How electrical energy can be controlled by power electronic converters for industrial processes and to improve power quality.


Laboratory and assignment work: 30% + Examination (3 hours): 70%.

Students are required to achieve at least 45% in the total continuous assessment component (assignments, tests, mid-semester exams, laboratory reports) and at least 45% in the final examination component and an overall mark of 50% to achieve a pass grade in the unit. Students failing to achieve this requirement will be given a maximum of 45% in the unit.

Workload requirements

2 hours lectures, 3 hours laboratory/practice classes and 7 hours private study per week

See also Unit timetable information

Chief examiner(s)


ECE2061 or TRC2500


ECE3051 or (TRC3501 and TRC3600)


ECE4504, ECE5054, ECE5504