Simplified Adaline based control of Shunt Active Power Filter with reduced sensors

Performance of Shunt Active Power Filter (SAPF) depends on the effectiveness of the reference current generation technique, which senses the voltages and currents of the system. Detection of voltage and current is done with the help of sensors. Failure due to faults in these sensors causes SAPF to aggravate power quality problems instead of compensating it. Therefore, sensorless and fault tolerant control of SAPF is a very attractive solution for its robust operation. This paper presents a simple modification in existing ADALINE based conventional control strategy which only requires source current and DC voltage measurement, thus eliminating load current, source voltage and filter current measurement and hence reducing the number of sensors involved. MATLAB/Simulink results under different conditions are shown to validate the proposed work.