Mereduksi Harmonisa pada Peralatan X-Ray Mobile 100mA dengan Menggunakan Filter Pasif (Single Tuned and Double Tuned Passive Filter)

Abstract

Non-linear electric load can cause distortion in the form of wave, either current or tension which are one of the parameters in determining the quality of electric power system. X-ray has the characteristics of non-linear electric load which can cause the form of side wave of electric tension and current to become not genuine sinusoidal anymore since there is the interaction between fundamental sinusoidal wave frequency with another wave frequency which is known as harmonics. X-ray which has Total Harmonics Distortion current (THDi) of 64.9% and Total Harmonics Distortion voltage (THDv) of 3.4% with 340 Watt power needs to be reduced because it is not in accordance with the definition of harmonic standard of the International Electro-technical Commission (IEC) 61000-3-2Class D. The use of Single-Tuned Passive Filter, Double-Tuned Passive Filter, and the combination of both of them in X-ray can reduce the third order up to the 39th order harmonics with Total Harmonics Distortion current (THDi) and Total Harmonics Distortion voltage (THDv) of 57.77% and 2.79%, 58.48% and 2.75%, 1.74% and 2.77% respectively.

Beban listrik yang bersifat tidak linier dapat menimbulkan distorsi bentuk gelombang, baik arus maupun tegangan yang merupakan salah satu parameter dalam menentukan kualitas dari sistem tenaga listrik. Rontagen (Sinar-X) mempunyai karakteristik beban listrik yang tidak linier yang dapat mengakibatkan bentuk gelombang sisi masukan tegangan listrik dan arus menjadi tidak sinussoidal murni akibat adanya interaksi gelombang sinussoidal frekuensi fundamental dengan frekuensi gelombang lain yang dikenal sebagai harmonisa. Sinar-X mempunyai Total Harmonisa Distorsi arus (THDi) sebesar 64,9 % dan Total Harmonisa Tegangan (THDv) 3,4 % dengan daya 340 Watt, perlu direduksi karena tidak sesuai dengan batasan harmonisa standar Internasional Elektrotechnical Commission (IEC) 61000-3-2 Kelas D. Penggunaan Filter Single-Tuned Passive Filter dan Doubel-Tuned Passive Filter serta penggabungan filter Single-Tuned Passive Filter dan Doubel-Tuned Passive Filter pada sinar-X dapat mereduksi harmonisa orde ke-3 sampai orde ke-39 dengan masing-masing Total Harmonisa Distorsi arus (THDi) dan Total Harmonisa Distorsi tegangan (THDv) yaitu : 57,77 % dan 2,79 %, 58,48 % dan 2,75 %, 1,74% dan 2,77%.