Perancangan dan Pengujian LED Driver 8 Watt Menggunakan Topologi Buck

Authors

  • Dwi Putri Rianny Politeknik Caltex Riau
  • Noptin Harpawi Politeknik Caltex Riau
  • Siska Novita Posma Politeknik Caltex Riau

Abstract

Permasalahan saat ini adalah led driver yang menghasilkan EMI yang besar. Dilakukannya perubahan nilai duty cycle pada switching untuk melihat seberapa besar pengaruh EMI. Pengujian dilakukan menggunakan konverter dc-dc topologi buck. Perubahan duty cycle pada switching konverter mempengaruhi level EMI yang dihasilkan. Pada proyek akhir ini diperlukan kontroller yang mampu mengubah duty cycle PWM yaitu chipkit uno32. Kontroller ini memiliki kinerja frekuensi tinggi yang tetap. Perubahan duty cycle dilakukan dengan cara manual dan otomatis. Dengan adanya perubahan duty cycle secara otomatis dapat menekan level EMI yang dihasilkan. Saat duty cycle berganti secara otomatis dalam pengukuran real, EMI yang didapat semakin menurun dari -55,176 dBm menjadi -63,2 dBm dan -73,3 dBm. Sedangkan pada simulasi level EMI juga menurun dari 5,6 dBm menjadi -27,3 dBm.

Author Biographies

Dwi Putri Rianny, Politeknik Caltex Riau

Teknik Elektro Telekomunikasi

Noptin Harpawi, Politeknik Caltex Riau

Teknik Telekomunikasi

Siska Novita Posma, Politeknik Caltex Riau

Teknik Telekomunikasi

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Published

2017-02-23

Issue

Vol. 4 No. 1 (2015): JAE

Section

Artikel

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