Distribution system performance enhancement using power filter/compensator device

In this paper, a novel low-cost power filter/compensator device is developed and validated for voltage stabilization, power factor correction and harmonic distortions mitigation. The operation of the power filter/compensator device is based on the intermittent switching between a double tuned filter and a series compensator. The switching process is achieved by a pulse signal generated from pulse-width modulation switching. The PID controller which is used to modulate the pulse-width modulation is driven by an error signal generated from a dual loop traditional controller. The Matlab/Simulink software environment is used as a simulation tool. The results show that the power filter/compensator device enhances the power factor and improves the voltage profile at the system buses. Also the power filter/compensator device has a great effect on the mitigation of harmonic distortions of the voltage at the system buses that is downstream it while the enhancement of the harmonic distortions is in the current waveforms at the system buses upstream it.