Hybrid Active Filter With Variable Conductance For Harmonic Suppression
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 6
Abstract
The tuned passive filter and the line inductance, causes unintentional series and/or parallel resonances, may result in severe harmonic distortion in the industrial power system.Here we present a paper in which hybrid active filter is used to suppress harmonic resonance and to reduce harmonic distortion. The proposed hybrid filter is operated as variable harmonic conductance according to the voltage total harmonic distortion; therefore, harmonic distortion can be reduced to an acceptable level in response to load change or parameter variation of the power system. Since the hybrid filter is composed of a seventhtuned passive filter and an active filter in series connection, both DC voltage and kVA rating of the active filter are dramatically decreased compared with the pure shunt active filter. In real application, this feature is very attractive since the active power filter with fully power electronics is very expensive. A reasonable tradeoff between filtering performances and cost is to use the hybrid active filter. Design consideration is presented, and experimental results are provided to validate effectiveness of the proposed method. Furthermore, this paper discusses filtering performances on line impedance, line resistance, voltage unbalance, and capacitive filters.
Authors and Affiliations
Abdul Sattar Khan, Pragya Mishra, Prasanta Ku. Jena
Keywords
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