Power quality is convinced a foremost concern in the present circumstance it becomes above all important with the introduction of complicated tools whose recitation is extremely sensitive to the quality of power supply. Novel industrialized progressions are sustained a great quantity of electronic applications for instance programmable logic controllers and adjustable speed drives. The electronic machine is very sensitive to troubles. Now a day electrical power faces several quality issues like voltage distortion, load unbalancing, excessive neutral current due to harmonics. In paper D-STATCOM with T-connected transformer and a single phase active power Filter is used to reduce harmonics and to compensate the neutral current. SRF based control algorithm is used to control the D-STATCOM. The complete model is designed in MATLAB Simulink environment and the results are shown.

Keywords : custom power devices, DSTATCOM, T-connected transformer, Active power filter