Enhancing the stability of a single bus system using shunt active filter

The stability of the bus system is improved by using the shunt active filter. Shunt active power filters are used to reduce the harmonic content in the power system which is caused by nonlinear loads. Nonlinear loads produces the non sinusoidal waveforms. The harmonic content presented in the system are eliminated and the sinusoidal waveforms of current and voltage are restored by injecting the compensating current at a bus system using shunt active filter. Active filter consists of a switching device such as IGBTs; power MOSFETs with a DC link capacitor across it. Synchronous Reference Frame (SRF) algorithm is used to produce the reference current. Hysteresis current control technique is used for the generation of firing pulses to the inverter. This system is simulated using MATLAB/ Simulink and the results are presented.