Perancangan Filter Aktif Berdasarkan Data Harmonisa Kapal Dengan Sistem Distribusi Direct Current (DC)

Gitasari, Dewi Diaz (2024) Perancangan Filter Aktif Berdasarkan Data Harmonisa Kapal Dengan Sistem Distribusi Direct Current (DC). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Rekonfigurasi sistem distribusi listrik AC menjadi DC merupakan metode yang sesuai untuk mengurangi nilai impedansi yang timbul pada sistem kelistrikan AC serta meningkatkan efisiensi terhadap penggunaan bahan bakar pada diesel generator kapal. Dengan melakukan rekonfigurasi, kerugian akibat impedansi pada arus AC dapat berkurang. Akan tetapi, rekonfigurasi sistem distribusi AC ke DC berpotensi menimbulkan distorsi harmonisa karena adanya penambahan komponen tambahan seperti rectifier dan inverter. Harmonisa merupakan gangguan yang terjadi dalam sistem distribusi tenaga listrik yang disebabkan oleh distorsi gelombang arus dan tegangan. Distorsi gelombang arus dan tegangan disebabkan oleh pembentukan beberapa gelombang dengan frekuensi kelipatan dari frekuensi fundamentalnya. Perancangan filter aktif dapat menjadi solusi untuk menyesuaikan dan mereduksi nilai THD yang disebabkan dari rekonfigurasi sistem distribusi AC ke DC. Penelitian dilakukan dengan melakukan simulasi gelombang harmonisa sebelum ditambahkan filter aktif. Berdasarkan hasil simulasi didapatkan nilai rata-rata THD sebesar 14.91%. Nilai tersebut masih berada di atas batas dari standar kelas BKI yaitu sebesar 8%. Perancangan filter aktif dilakukan dengan menggunakan perangkat lunak “Simulink MATLAB”. Filter aktif yang digunakan dalam perancangan yaitu menggunakan jenis Shunt Active Power Filter (SAPF) yang kemudian ditambahkan ke dalam sistem distribusi DC dengan tujuan menghambat laju arus beban agar tidak mengalami lonjakan. Kemudian, rangkaian dengan SAPF disimulasikan menggunakan analisis Fast Fourier Transform (FFT) sehingga didapatkan nilai THD dan visualisasi dari bentuk gelombang harmonisa. Berdasarkan hasil dari simulasi, didapatkan hasil nilai rata-rata THD sebesar 1.33%. Berdasarkan nilai rata-rata THD dengan filter, dapat disimpulkan bahwa filter aktif dengan jenis SAPF dapat digunakan untuk menurunkan nilai THD.

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Reconfiguration of the AC to DC electrical distribution system is a suitable method to reduce the impedance value arising in the AC electrical system and increase the efficiency of fuel use in ship diesel generators. By reconfiguring, losses due to impedance in the AC current can be reduced. However, the reconfiguration of the AC to DC distribution system has the potential to cause harmonic distortion due to the addition of additional components such as rectifiers and inverters. Harmonics are disturbances that occur in power distribution systems caused by distortion of current and voltage waves. Distortion of current and voltage waves is caused by the formation of several waves with frequencies multiple of the fundamental frequency. Active filter design can be a solution to adjust and reduce the THD value caused by the reconfiguration of the AC to DC distribution system. The research was conducted by simulating the harmonic wave before adding an active filter. Based on the simulation results, the average THD value is 14.91%. This value is still above the limit of the BKI class standard of 8%. The active filter design is carried out using the “Simulink MATLAB” software. The active filter used in the design is using a type of Shunt Active Power Filter (SAPF) which is then added to the DC distribution system with the aim of inhibiting the load current rate so that it does not experience a surge. Then, the circuit with SAPF is simulated using Fast Fourier Transform (FFT) analysis so that the THD value and visualization of the harmonic waveform are obtained. Based on the results of the simulation, the average THD value is 1.33%. Based on the average THD value with the filter, it can be concluded that an active filter with SAPF type can be used to reduce the THD value.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Beban non-linier, Distorsi Harmonik Total, Shunt Active Power Filter, Sistem Distribusi Direct Current. Direct Current Distribution System, Non-linear load, Shunt Active Power Filter, Total Harmonic Distortion
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK1010 Electric power system stability. Electric filters, Passive. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2681.B47 Electric motors, Direct current. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2692 Inverters T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK351 Electric measurements.
Divisions:	Faculty of Marine Technology (MARTECH) > Marine Engineering > 36202-(S1) Undergraduate Thesis
Depositing User:	Dewi Diaz Gitasari
Date Deposited:	07 Aug 2024 02:44
Last Modified:	07 Aug 2024 02:44
URI:	http://repository.its.ac.id/id/eprint/112804

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