Single phase active power filter

Single phase active power filter (APF) with sliding mode control is analyzed mathematically and by simulation. An APF is power electronics device that is connected parallel to the grid and the load, with task to cancel the reactive and harmonic currents caused by nonlinear loads connected to the grid. Proposed solution is implemented on laboratory test system with universal microprocessor control system. Behavior of realized APF is analyzed under different conditions. Limitations of used microprocessor control system for APF with sliding mode control using Matlab - Simulink are explored.