Modeling and Simulation of Shunt Active Power Factor using Synchronous Detection Method

Sana M.K

Active power filters (APFs) provides an effective measure to eliminate the power line harmonic/reactive currents generated by nonlinear loads or by distributed energy sources that are connected to the grid. In order to mitigate the harmonics, active power filters (APFs) are used. APF overcomes the drawbacks of passive filters by using the switching mode power converter (VSI) to perform the harmonic current elimination. Active power filters are typically connected in parallel to the harmonic/reactive current sources and cancel the harmonic/reactive components in the line current so that the current flow into and from the grid is sinusoidal and in phase with the grid voltage. In this paper, a three phase shunt active power filter using synchronous detection method with a hysteresis current control technique is presented.