H.R Imani jajarmi - University Kebangsaan Malaysia, Malaysia
A Mohamed - University Kebangsaan Malaysia, Malaysia
H Shareef - University Kebangsaan Malaysia, Malaysia

This paper presents a novel method to calculate the reference source current and the reference compensating current for shunt active power filters (SAPFs). This method firstcalculates the amplitude and phase of the fundamental load current from a recursive algebraic approach block beforecalculating the displacement power factor. Next, the amplitudeof the reference mains current is computed with the corresponding phase voltage. Finally, the difference betweenthe actual load current and the reference source current is considered the reference compensating current to be deliveredby the SAPF. The proposed method is presented and applied to the control system of the voltage source converter of SAPFs. The performance of the proposed method in reducingharmonics and improving the power factor is examined with a SAPF simulation model

shunt active power filter, reference source current, recursive algebraic approach, power quality