Perancangan dan Analisa Filter Harmonisa Pasif Single Tuned di Ruangan Laboratorium Interface Gedung Elektro

The Interface Laboratory in the Electrical Engineering Building of the Bengkalis State Polytechnic uses numerous non-linear devices that generate harmonics, degrading power quality. This research designed a single-tuned passive harmonic filter to reduce current harmonics. The process began with measuring the current and voltage THD using a Power Analyzer. After calculating and designing a 41 µF capacitor and a 27 mH inductor, the filter was installed in parallel with the system. As a result, the current THD of phase I2 decreased significantly from 65.7% to 36.9%, while phases I1 and I3 experienced smaller decreases. Conversely, the voltage THD increased across all phases, indicating that the filter is more effective at reducing current harmonics than voltage. This is likely due to component quality or filter design. In conclusion, the single-tuned passive filter is quite effective for improving current waveforms, but further evaluation is needed to ensure it does not increase voltage disturbances.