A Comparative Study of Control Algorithms for DSTATCOM for Load Compensation

DSTATCOM (distribution STATic COMpensator) is used for compensation of reactive power and unbalance caused by various loads in distribution system. This paper evaluates three different methods of determining the compensating current for a DSTATCOM. The methods compared, are the instantaneous reactive power theory, synchronous reference frame theory and a new Adaline based algorithm. The Adaline based algorithm is an adaptive method for extracting reference current signals. These three schemes are simulated under MATLAB environment using SIMULINK and PSB toolboxes. Simulation results depict the performance of these schemes for control of DSTATCOM.