Simulasi Filter Pasif Single Tuned untuk Mereduksi Harmonisa pada Personal Computer (PC)

Abstract

NonJinear load has non-sinusoidal wave form because it has been distorted by harmonics culrent, non linear load in personal computer (PC) one the causes of harmonics which can cause the quality of electric power to be worse. The research used simulation method of single tuned filter as the filter used to reduce harmonics caused by PC dual core using 15 inch LCD monitor and printing machine. By using measurement device, power quality analyzer fluke SW43W, it is found that PC of D brand, which has the biggest IHDi in the second order, is 0.469 ampere, the fifth order is 0.360 ampere, the seventh order is 0.226 ampere, and the ninth order of 0.103 ampere. The Result of the simulations, using passive single tuned filter, shows that the decrease of harmonics currcnt value in thethird order is 0.331 ampere, the fifttr order is 0.0254 ampere, the seventh order is 0.159 ampere, and the ninth order is 0.072 ampere, there is also the decrease of harmonics current in other orders. The passive single tuned filter being used with C value is 9,99 pf, L value is 0,021 H, and R value is 0.46 which can reduce [HDi from l0% - l5o/o whith the decrease of IHDi order up to the 49fr order value. The bigger the value of the used capasitor the closer the IHDi wave to sinusoidal, and it even becomes sinusoidal.