Current and voltage harmonics acquisition and obtaining reference currents for an Single Phase shunt Active Power Filter

This paper presents the design and implementation of the insulation and conditioning cards for sensors that measure voltage and current signals for to be applied to harmonic control and compensation in an Active Power Filter (APF). Then describes the characteristics and mathematical algorithm in the time domain technique used to obtain the reference current applied to digital control of a Shunt Single Phase Active Power Filter. Finally presents the simulation and integration of the instrumentation system with the algorithm to obtain reference currents implemented in a Digital Signal Processor (DSP) 56F8323 of Freescale®.