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    Analisa Perbandingan Perancangan Filter LCL pada Penyearah Terkendali Satu Fasa Full Converter dengan Penyearah PWM Satu Fasa Full Bridge

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    Date
    2012
    Author
    Lastya, Hari Anna
    Advisor(s)
    Nazir, Refdinal
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    Abstract
    Electronics devices need a direct current power supply although now only one alternating current power supply is available. Therefore, ac-dc converters which can convert an alternating current power supply to a direct current power supply will be needed. However, the use of this ac-dc converters will cause distortion in the form of current waves which are called harmonics. This harmonics can fault the work of the other electric devices which are attached to the same power source. Therefore, it is recommended that the harmonics generated by rectifiers should be under IEC 61000-3-2 standard. In this research will reduction of harmonics by using LCL filter. At load of 2 kW, R of 5 , L of 0,05 H, controlled rectifiers single phase full converter produce the third harmonics current of 2.76 amperes, the installed LCL filter produces the third harmonics current of 0.76 ampere. While, at PWM rectifiers single phase full bridge with RL load produce the third harmonics current of 2.57 amperes, the installed LCL filter produces the third harmonics current of 1.26 amperes. According to IEC-61000-3-2 standard, the allowed third harmonics current is 2.3 amperes. Keywords: controlled rectifiers single phase full converter, PWM rectifiers single phase full bridge, LCL filter, harmonics
     
    Peralatan elektronik membutuhkan sumber arus searah, sementara yang tersedia merupakan sumber arus bolak balik, sehingga dibutuhkan konverter ac-dc yang berfungsi mengubah sumber arus bolak balik yang ada menjadi sumber arus searah. Pemakaian konverter ac-dc, menghasilkan distorsi pada bentuk gelombang arus, yang disebut harmonisa. Harmonisa dapat mengganggu kerja peralatan listrik lainnya yang terpasang pada sumber tegangan yang sama. Jadi, harus diupayakan agar harmonisa yang dibangkitkan oleh konverter ac-dc dibawah standar IEC 61000-3-2. Penelitian ini akan dilakukan reduksi arus harmonisa dengan filter LCL. Pada daya output sebesar 2 kW, beban R sebesar 5  dan L sebesar 0,05 H, penyearah terkendali satu fasa full converter menghasilkan arus harmonisa ketiga sebesar 2,76 Ampere, sesudah pemasangan filter LCL menjadi 0,76 Ampere. Pada penyearah PWM satu fasa full bridge menghasilkan arus harmonisa ketiga sebesar 2,57 Ampere, sesudah pemasangan filter LCL menjadi 1,26 Ampere. Sedangkan menurut standard IEC 61000-3-2, arus harmonisa ketiga yang diizinkan adalah sebesar 2,3 Ampere. Kata kata kunci : penyearah terkendali satu fasa full converter, penyearah PWM satu fasa full converter, filter LCL, harmonisa

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    http://repositori.usu.ac.id/handle/123456789/38158
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    • Master Theses [167]

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    Repositori Institusi Universitas Sumatera Utara (RI-USU)
    Universitas Sumatera Utara | Perpustakaan | Resource Guide | Katalog Perpustakaan
    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV