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Comparative evaluation of Fuzzy-PI and PI control methods for a three phase grid connected inverter

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2 Author(s)
Tsengenes, G. ; Dept. of Electr. & Comput. Eng., Democritus Univ. of Thrace, Xanthi, Greece ; Adamidis, G.

This research addresses the issue of power electronics control scheme for grid integration of a distribution generation unit. For the improvement of the current control and DC bus voltage control, the application of the PI and Fuzzy-PI controller is investigated. Theoretical and mathematical analysis of the internal structure of the PI and Fuzzy-PI controller is carried out. Using the software Matlab/Simulink, the behavior of the controllers for DC bus voltage and current control is investigated. A comparative evaluation of the controllers both in steady state and transient response is presented. Furthermore the PI and Fuzzy-PI controller are compared based on THDi index of the inverter's current. The ability of the inverter to provide ancillary services to the electric power system though the uninterrupted compensation of the reactive power of the load is studied, as well.

Published in:

Power Electronics and Applications (EPE 2011), Proceedings of the 2011-14th European Conference on

Date of Conference:

Aug. 30 2011-Sept. 1 2011