Welcome to Harmonics in Power Electronic Systems

Description: This course provides a broad overview of power system harmonic problems, methods of analysing, measuring and effectively mitigating them. Several extended simulation and data pro- cessing tools, among others DIgSILENT PowerFactory, Matlab/Simulink or LabVIEW are used to assess and study the harmonic distortion at different points of power networks. The results of ana- lytical investigation and simulations are validated against measurements applying sophisticated data processing techniques. Furthermore, deep understanding of hardware considerations regarding har- monic measurements in harsh industrial environment is given, using specialized equipment, for in- stance GPS-synchronized measuring instruments.


The course covers the following topics:

  • Power Quality definitions. Generation mechanism of power system harmonics. Harmonic in- dices.
  • Voltage vs. current distortion as well as parallel vs. series resonance in modern power sys- tems. Point of Common Coupling (PCC).
  • Sources and effects of harmonic distortion.
  • Harmonic measuring instruments and measuring procedures in LV, MV and HV networks.
  • Mathematical tools and theories for analysing distorted waveforms. Signal processing and uncertainty analysis.
  • Modelling of classical power system components. Harmonic analysis.
  • Modelling of grid-connected converters for harmonic analysis purposes and their application in modern power systems including e.g. offshore wind power plants.
  • Harmonic load-flow, frequency scan and time domain simulations. Linear and nonlinear anal- ysis techniques.
  • Steady-state harmonics vs. harmonic stability. Small-signal representation, sequence and frequency coupling.
  • Software tools for harmonic analysis.
  • Precautionary (preventive) and corrective (remedial) harmonic mitigation techniques. Passive and active line filters. Filter design.

Link: http://et.aau.dk/phd/phd-courses/

Organizer: Professor Claus Leth Bak, email: clb@et.aau.dk, Aalborg University

Lecturers: Lukasz Kocewiak - Ørsted Wind Power


Time: 29 - 31 October 2018

Place: Aalborg Unvirersity

Zip code:

City: Number of seats: 30

Deadline: 8 October 2018  

Important information concerning PhD courses: We have over some time experienced problems with no-show for both project and general courses. It has now reached a point where we are forced to take action. Therefore, the Doctoral School has decided to introduce a no-show fee of DKK 5,000 for each course where the student does not show up. Cancellations are accepted no later than 2 weeks before start of the course. Registered illness is of course an acceptable reason for not showing up on those days. Furthermore, all courses open for registration approximately three months before start. This can hopefully also provide new students a chance to register for courses during the year. We look forward to your registrations.