harmony

Methodology

In order to successfully run the project a number of research approaches need to be taken like harmonic analysis methods, modeling of the power system components, filter design, system analysis and mitigation methods to avoid harmonic problems. 

Harmonic analysis in power systems

Harmonics are present in many ways in a power system. In order to carefully map harmonic sources, harmonic sinks and identify harmonic resonance risks, it is important to perform harmonic analysis of the different active and passive components in the power systems. 

More wide-band modeling of power system devices

Models which describe the power system components (power lines, cables, transformers, capacitors, switch-gears) at the fundamental frequency exist to a large extend. However, for frequencies away from this still major challenges exist. Cable and line models are strongly frequency dependent and it is necessary to model those components in order to master the control of the harmonics in the power system. 

Filter design of power electronics based systems

The overall goal of filter design is to reduce cost and increase efficiency to ensure a competitive product. Design tools to optimize those parameters may be based on step-by-step procedures, which are the most attractive seen from a designer point of view. 

System modeling and analysis of power electronics based power system

The complexity of a power electronics based power system is high. Hence, it is necessary to develop system models in the simulation tools, which can assist to do analysis and help to identify problems in a given power system. The tools can be based Matlab/Simulink, but also more power system oriented tools like PSCAD or Digsilent. 

Harmonic mitigation methods

In the case that serious stability problems are foreseen in a power system with a large amount of power electronic systems (generation, load), methods to reduce the harmonic risk are necessary. 

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