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Open AccessArticle

Current Compensation in Grid-Connected VSCs using Advanced Fuzzy Logic-based Fluffy-Built SVPWM Switching

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Information Communication Convergence Research Center, Gwangju Institute of Science & Technology, Gwangju 61005, Korea
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Department of Electrical & Electronics Engineering, Sri Sairam, College of Engineering, Bangalore 562106, India
3
Department of Electrical Engineering, Amirkabir University of Technology, Tehran 15875–4413, Iran
4
Base 58 d.o.o., 31000 Osijek, Croatia
5
Power Engineering Department, Faculty of Electrical Engineering, Computer Science and Information Technology, University of Osijek, 31000 Osijek, Croatia
*
Author to whom correspondence should be addressed.
Energies 2020, 13(5), 1259; https://doi.org/10.3390/en13051259
Received: 19 December 2019 / Revised: 28 February 2020 / Accepted: 2 March 2020 / Published: 9 March 2020
A main focus in microgrids is the power quality issue. The used renewable sources fluctuate and this fluctuation has to be suppressed by designing a control variable to nullify the circulating current caused by voltage fluctuations and deviations. The switching losses across power electronic switches, harmonics, and circulating current are the issues that we discuss in this article. The proposed intelligent controller is an interface between a voltage-sourced converter and a utility grid that affords default switching patterns with less switching loss, less current harmonic content, and overcurrent protection, and is capable of handling the nonlinearities and uncertainties in the grid system. The interfaced controller needs to be synchronized to a utility grid to ensure that the grid–lattice network can be fine-tuned in order to inject/absorb the prominent complex reactive energy to/from the utility grid so as to maintain the variable power factor at unity, which, in turn, will improve the system’s overall efficiency for all connected nonlinear loads. The intelligent controller for stabilizing a smart grid is developed by implementing a fuzzy-built advance control configuration to achieve a faster dynamic response and a more suitable direct current link performance. The innovation in this study is the design of fuzzy-based space vector pulse width modulation controller that exploits the hysteresis current control and current compensation in a grid-connected voltage source converter. By using the proposed scheme, a current compensation strategy is proposed along with an advanced modulation controller to utilize the DC link voltage of a voltage source converter. To demonstrate the effectiveness of the proposed control scheme, offline digital time-domain simulations were carried out in MATLAB/Simulink, and the simulated results were verified using the experimental setup to prove the effectiveness, authenticity, and accuracy of the proposed method. View Full-Text
Keywords: Fuzzy Logic Controller (FLC); Space Vector Pulse Width Modulation (SVPWM); Voltage Source Converter (VSC); microgrid Fuzzy Logic Controller (FLC); Space Vector Pulse Width Modulation (SVPWM); Voltage Source Converter (VSC); microgrid
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Teekaraman, Y.; Kuppusamy, R.; Baghaee, H.R.; Vukobratović, M.; Balkić, Z.; Nikolovski, S. Current Compensation in Grid-Connected VSCs using Advanced Fuzzy Logic-based Fluffy-Built SVPWM Switching. Energies 2020, 13, 1259.

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