Control and Design Constraints of Compensators for Mitigation of Harmonics in Photovoltaic Inverter
Kalaiarasi N1, Anitha D2, Uthra R3
1Kalaiarasi N, Department of Electrical & Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai (Tamil Nadu), India.
2Anitha D, Department of Electrical & Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai (Tamil Nadu), India.
3Uthra R, Department of Electrical & Electronics Engineering, SRM Institute of Science and Technology, Kattankulathur, Chennai (Tamil Nadu), India.
Manuscript received on 18 October 2019 | Revised Manuscript received on 25 October 2019 | Manuscript Published on 02 November 2019 | PP: 3386-3390 | Volume-8 Issue-2S11 September 2019 | Retrieval Number: B15690982S1119/2019©BEIESP | DOI: 10.35940/ijrte.B1569.0982S1119
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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: Compensators are devices which diminish the current harmonics of the lower order which are injected to the electric grid to meet the international standards. Resonant compensators are used to reduce the particular harmonics in grid-connected photovoltaic inverters. This paper presents how the harmonics are mitigated within the standards by using lead, lag, lead-lag compensators. The frequency deviation and transient response are considered the important factors during the design of the compensators. MATLAB design of grid connected photovoltaic inverter is presented with simulation result. A hardware of three phase photovoltaic load connected inverter with LCL filter was implemented. The simulation and experimental results of Grid connected Photovoltaic inverter with and without compensation are discussed. The harmonic profiles of these compensators are also presented.
Keywords: Quasi-ZSI, PV Array, Lead, Lag, Lead-lag Compensator, LCL Filter, MPPT, THD.
Scope of the Article: Control and Automation