Quantifying Harmonic Distortion

It is necessary to be able to predict harmonic distortion, evaluate the effects, and perform the proper techniques that are required to manage the voltage distortion, without functional faults over the life time of the installation. There are two types of simulation tools available: time domain simulation and the more commonly applied too that calculates in frequency domain. The benefit of the frequency domain calculation tools is that the time and work for modeling and calculation of large systems is much shorter than for a time domain simulation. However, the accuracy will normally be lower, since one has to decide the harmonic content of the load current, which in reality is dependent on the network configuration and can only be determined by time domain simulation or by equivalent figures from similar systems. Special considerations should be made for PWM type of controllers and use of passive filters, where time domain simulations are strongly recommended in order to obtain results that are necessary for correct design and dimensioning


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  • Accession Number: 01484352
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 11 2013 3:29PM