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Shaping the current waveform of an active filter for optimized system level harmonic conditioning

Skjong, Espen; Molinas Cabrera, Maria Marta; Johansen, Tor Arne; Volden, Rune
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URI
http://hdl.handle.net/11250/2391035
Date
2015
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  • Institutt for teknisk kybernetikk [4100]
  • Publikasjoner fra CRIStin - NTNU [41946]
Original version
Helfert, Markus; Gusikhin, Oleg [Eds.] Proceedings of the 1st International Conference on Vehicle Technology and Intelligent Transport Systems p. 98-106, SciTePress, 2015   10.5220/0005488800980106
Abstract
Harmonic voltages and currents in electrical systems, when present to a certain degree, represent not only a

power quality problem but they are also strongly associated with the electrical system overall losses and they

are arguably a source of instability and a safety concern. Mitigating harmonics distortion across the entire

system by actively reducing harmonic currents propagation is an effective way of coping with these issues and

can be dealt with the injection of a compensating current waveform with an active filter installed at a given

bus. This paper shows how, by shaping the compensating current waveform in an optimal way, the overall

electrical system harmonic distortion can be optimally reduced in a cost effective manner with a minimum

size of the compensating device. The process of shaping this optimal compensating current is shown by how

its components are defined by the optimization algorithm using the phase and amplitude of each harmonic as

degrees of freedom in the process of finding the optimal waveform. A marine vessel distribution grid is used

as representative example to prove the concept.
Publisher
SCITEPRESS
Series
Proceedings of the 1st International Conference on Vehicle Technology and Intelligent Transport Systems;VEHITS 2015

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