MPPT Controller Based on Fuzzy Logic for Photovoltaic Systems using Line-Commutated Inverter and Sepic Converter
T. Shanthi1, S. U. Prabha2
1T. Shanthi, Assistant Professor, Electrical and Electronics Engineering DepartmentKumaraguruCollege of Technology, Coimbatore – 641 049, Tamil Nadu, India.
2S. U. Prabha, Professor and Head, Electrical and Electronics Engineering Department, Sri Ramakrishna Engineering College, Coimbatore – 641 022, Tamil Nadu, India.
Manuscript received on 19 October 2019 | Revised Manuscript received on 25 October 2019 | Manuscript Published on 29 June 2020 | PP: 41-47 | Volume-8 Issue-10S2 August 2019 | Retrieval Number: J100708810S19/2019©BEIESP | DOI: 10.35940/ijitee.J1007.08810S19
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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: A controller for maximum power point tracking (MPPT) based on fuzzy logic was developed to connect the solar panels and three phase grid through an inverter. MPPT controller traces the maximum power and then feeds this power to the three phase grid irrespective of the changes in solar irradiations. The input and output variables for the fuzzy logic controller were selected in order to vary the inverter firing angle to track the maximum power from the solar panels. The proposed system using fuzzy logic controller was built using MATLAB Simulink /Power System Block (PSB) set. A DSP controller has been embedded with program for firing of the thyristors used in the inverter with appropriate pulses. Hardware of the entire system was fabricated in the laboratory and the outputs from the PV array of 90 volts, 11 amperes are exhibited. Both the hardware and simulation outputs have been compared which are in close agreement to validate the suggested system.
Keywords: Line Commutated Inverter, Photovoltaic Cell, SEPIC Converter, Maximum Power Point Tracking.
Scope of the Article: Community Information Systems