Comparison of Control Strategies for Shunt Active Power Filter in Distribution Systems
M.V.S. Sivakrishna1, K.S.S. Prasad Raju2
1M.V.S. Sivakrishna, Department of Electrical and Electronics Engineering, S.R.K.R. Engineering College, Bhimavaram (Andhra Pradesh), India.
2K.S.S. Prasad Raju, Department of Electrical and Electronics Engineering, S.R.K.R. Engineering College, Bhimavaram (Andhra Pradesh), India.
Manuscript received on 11 May 2019 | Revised Manuscript received on 05 June 2019 | Manuscript Published on 15 June 2019 | PP: 124-130 | Volume-8 Issue-1S3 June 2019 | Retrieval Number: A10230681S319/2019©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In this paper different control schemes for shunt active power filter were discussed for the harmonic mitigation in distribution systems. Shunt active power filters are connected in distribution systems, to supply excessive real and reactive powers. Shunt Active filter is used for the compensation of harmonics from nonlinear loads by injecting equal and opposing harmonic current which gives sinusoidal wave on supply side. Harmonics on load side can be eliminated by using filters with proper control strategies. These control strategies are used for the estimation of reference currents on supply side. Triggering pulses to the converter will be generated as per the difference between the reference current and the actual current on supply side. Here Instantaneous P-Q Theory, Synchronous reference frame (D-Q) Theory, Synchronous Detection method, Perfect Harmonic Cancellation strategies are applied to the filter for elimination of harmonics. In this case we are using a 3-level Neutral Point Clamped Converter as filter and Diode Bridge rectifier connected load.
Keywords: Shunt Active Power Filter, Harmonic Currents, Instantaneous P-Q Theory, Synchronous Reference Frame (D-Q) Theory, Synchronous Detection Method, Perfect Harmonic Cancellation, 3-level Neutral Point Clamped Converter.
Scope of the Article: Wireless Power Transmission