Real-time implementation of three-level inverter-based D-STATCOM using neuro-fuzzy controller

Authors : Resul ÇÖTELİ, Hakan AÇIKGÖZ, Beşir DANDIL, Servet TUNCER

Pages : 2088-2103

View : 18 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A distribution static compensator insert ignore into journalissuearticles values(D-STATCOM); is a custom power device connected in parallel to a power system to address electric power quality problems caused by reactive power and harmonics. To obtain high performance from a D-STATCOM, the D-STATCOM`s \textit{dq}-axis currents must be controlled in an internal control loop. However, control of the D-STATCOM`s currents is difficult because of its nonlinear structure, cross-coupling effect between the \textit{d}- and \textit{q}-axis, undefined dynamics, and fast changing load. Therefore, the controller to be preferred for a D-STATCOM should have a nonlinear and robust structure. In this study, a neuro-fuzzy controller insert ignore into journalissuearticles values(NFC);, which is a robust and nonlinear controller, is proposed for \textit{dq}-axis current control of a D-STATCOM. A DSP-based experimental setup is built for real-time control. The basic building block of the experimental setup is a three-level cascaded inverter. This inverter is constructed by using three IPM intelligent modules. A DS1103 controller card is used for real-time control of the D-STATCOM`s experimental setup. The control algorithm is prepared in MATLAB/Simulink software and loaded to the DS1103 controller card. The performance of the NFC current-controlled D-STATCOM is tested for different load conditions: no load to full inductive, no load to full capacitive, full inductive to full capacitive, and full capacitive to full inductive. For this aim, the reactive current setpoint is changed as a step. The experimental results are presented to show the efficiency of the proposed controller under different load conditions.
Keywords : D STATCOM, electric power quality, neuro fuzzy controller, three level H bridge inverter