Neuro-fuzzy current controller for three-level cascade inverter based D-STATCOM

Distribution STATCOM (D-STATCOM) is a custom power device connected in parallel to power system. In this paper, Neuro-Fuzzy Controller (NFC) which has robust structure is proposed for control of D-STATCOM´s dq-axis currents. Designed NFC is first order Mamdani type NFC structure and has two inputs, one output and six layers. D-STATCOM is based on three-level cascaded inverter and this inverter is controlled with Sinusoidal Pulse Width Modulation (SPWM) technique. dSPACE´s DS1103 control card is used for real-time implementation of D-STATCOM´s control algorithm. The performance of D-STATCOM using NFC is evaluated by changing of reference reactive current (i_qref) as on-line. Under this condition, some experimental results obtained from experimental setup are given.