Analisis Perbandingan Reduksi Arus dan Tegangan Harmonisa pada VSD Menggunakan Metode Filter Pasif, Metode Filter Aktif, Metode Filter Kalman, Metode Injeksi Sinusoidal Pulse Width Modulation dan Space Vector Pulse Width Modulation dengan Beban Motor Induksi 3 Fasa

Abstract

Three-phase induction motors are widely used as prime movers for industrial and commercial machines. However, an induction motor must also have a device to control the speed so that the performance efficiency of the motor is getting better. One of the tools used to regulate the rotational speed of a three-phase induction motor is the Variable Speed Drive (VSD). VSD is a non-linear load so it will produce harmonic distortion. In this study, the authors used four methods to reduce harmonic currents and voltages that occur in VSD, namely the passive filter method, thr active fiter method, the Kalman filter method, the Sinusoidal Pulse Width Modulation (SPWM) injection method, and the Space Vector Pulse Width Modulation (SVPWM) injection method. After the research was conducted, the authors found that the most effective method for reducing harmonic currents and voltages for the Variable Speed Drive was the Space Vector Pulse Width Modulation (SVPWM) method. The current THD value in the R, S, and T phases produced by the Variable Speed Drive with the SVPWM injection method decreased from 7.16%, 7.15% and 7.58% to 3.82%, 3.21% and 2.04% while the voltage THD value decreased from 28.87%, 28.80%, and 28.85% to 4.61%, 5.69%, and 5.51%.