Sliding-mode Control Based Three-phase Shunt Active Power Filter: Simulation and Experimentation

This article presents a simulation and experimental study of a sliding-mode controller of the DC bus voltage of a three-phase shunt active power filter. The sliding-mode controller is introduced to improve tracking performance characteristics, power quality, and minimized consumption of the reactive power. The algorithm used to identify the reference currents is based on the self-tuning filter. The firing pulses of the insulated-gate bipolar transistor inverter are generated using a hysteresis current controller, which is implemented on an analog card. Finally, this study, under steady-state and transient conditions, is illustrated with signal-flow graphs and corresponding analysis. This study was verified by both time-domain computer simulations and experimental tests on a hardware prototype based on dSPACE-1104 (dSPACE, Germany). The experimental results show the feasibility and the effectiveness of the designed active filter associated with a sliding-mode controller and its capability in meeting the IEEE 519-1992 recommended harmonic standard limits.