Analisa Harmonisa Transformator Satu Fasa Berbeban Motor Arus Searah Melalui Rectifier dan Simulasi Filter Pasif Berbasis Matlab di Laboratorium Program Studi Teknik Elektro Fakultas Teknik Universitas Kristen Indonesia

Dangin, Helda Oktavianti (2023) Analisa Harmonisa Transformator Satu Fasa Berbeban Motor Arus Searah Melalui Rectifier dan Simulasi Filter Pasif Berbasis Matlab di Laboratorium Program Studi Teknik Elektro Fakultas Teknik Universitas Kristen Indonesia. S1 thesis, Universitas Kristen Indonesia.

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Abstract

Penelitian ini menganalisis harmonisa transformator satu fasa yang dibebani dengan Motor Arus Searah (MAS) dan penyearah dengan menggunakan pendekatan metode kuantitatif. Tujuan dari penelitian ini adalah untuk mengidentifikasi nilai Total Harmonic Distortion untuk arus (THDi) pada transformator dan merancang filter pasif guna mengurangi tingkat harmonisa apabila tidak memenuhi standar. Hasil penelitian menunjukkan bahwa hasil pengukuran, diperoleh THDi 31,01% pada transformator beban nol, pada transformator berbeban MAS dengan penyearah setengah gelombang, THDi sebesar 79,35%, dan pada transformator berbeban MAS dengan penyearah gelombang penuh, THDi sebesar 46,40%, yang melebihi standar IEEE 519-2014. Hasil simulasi filter pasif single tuned LC menunjukkan bahwa pada transformator berbeban MAS dengan penyearah setengah gelombang mengalami penurunan tingkat harmonisa dari nilai THDi 79,35% sebelum menggunakan filter, menjadi 1,04% setelah menggunakan filter dan memenuhi standar IEEE 519-2014. Tingkat harmonisa dari transformator berbeban MAS dengan penyearah gelombang penuh, sebelum difilter, THDi 46,40%, namun setelah difilter, THDi 37,98%, masih melebihi standar IEEE 519-2014. Kata Kunci: Filter Pasif Single Tuned LC, Harmonisa, Standar IEEE 519-2014, Transformator. / This study analyzed single-phase transformer harmonics loaded with Direct Current Motor (MAS) and rectifier using quantitative method approach. The purpose of this study was to identify the Total Harmonic Distortion (THDi) value in transformers and design passive filters to reduce harmonic levels if they do not meet the standards. The results showed that the measurement results, obtained THDi 31.01% in zero-load transformers, in MAS loaded transformers with half-wave rectifiers, THDi by 79.35%, and in MAS loaded transformers with full-wave rectifiers, THDi by 46.40%, which exceeded the IEEE 519-2014 standard. The results of the single tuned LC passive filter simulation showed that the MAS loaded transformer with a half-wave rectifier decreased harmonic level from the THDi value of 79.35% before using the filter, to 1.04% after using the filter and met IEEE 519-2014 standards. The harmonic level of MAS loaded transformer with full wave rectifier, before filtering, THDi 46.40%, but after filtering, THDi 37.98%, still exceeds IEEE 519-2014 standard. Keywords: Single Tuned LC Passive Filter, Harmonic, IEEE 519-2014 Standard, Transformer

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