Author : P. Lalitha Madhuri and N. Vamsi Krishna

This paper aims to compensate harmonics, reactive power and unbalanced load current of diesel generator set for an isolated system by controlling Distribution static synchronous compensator (DSTATCOM). DSTATCOM control is achieved by using least mean square based adaptive linear element (ADALINE).To extract balanced positive sequence real fundamental frequency component of the load current an ADALINE is used. To maintain a constant voltage at the dc- bus of voltage- source converter (VSC) and to obtain a fast dynamic response a proportional-integral (PI) controller is used. Switching signals to voltage source converter are obtained from hysteresis-based Pulse Width Modulation controller. The simulation is carried out in matlab environment by using simulink and PSB tool boxes, for to demonstrate the load compensation of DG set for an isolated system feeding to both linear and nonlinear loads. Results are given to verify the optimal operation of the DG set and to verify the effectiveness of the control of DSTATCOM. The extension part utilizes Neuro Fuzzy controller instead of PI controller to reduce steady state error, and to improve THD, compare this with previous results.

Keywords: ADALINE, Diesel Generator Set, Distribution Static Synchronous Compensator (DSTATCOM), Voltage Source Converter(VSC), Load Compensation ,Harmonic elimination.

Article published in International Journal of Current  Engineering  and Technology, Vol.3,No.5(Dec- 2013)