Design and development of passive filter and comparative study of simulation results of passive and Active filter

Now a days use of nonlinear devices has been increased to a large extend. In the power system reforms some of the power supplying companies take into consideration the presence of harmonics as one of the parameter in the tariff. Therefore as we control the power factor within the limit using APFC panel, it is today´s need to use appropriate filter to control the harmonics. This paper presents the study of harmonics present in an educational Institute and hardware design of passive filter. Readings are taken with and without filter to validate the developed hardware. The simulation work is also carried out in MATLAB to compare the results of Active and passive filter.