Active power filters are devices having it generally installed in electrical systems and which tend to enhance the overall capacity especially when harmonics and reactive power are present and need some counter measure to there effect. They actively oversee the flow of energy so as to assure that energy usage does not only remain but is also stable. Their deployment is noted to be very useful in industrial applications since there is large machinery which significantly distorts the power supply. Other than the economic factor, the functional effectiveness of active power filters also leads to increased lifespan of electrical components, thus proves beneficial in the long term for any power-based operation.