Abstract
The rapid development of technology to date has made many electrical and electronic equipment that require a direct current (dc) voltage source whose output voltage can be adjusted to the needs of the user. There are several direct voltage levels that are commonly used by electrical and electronic equipment. To get a direct voltage that can be used for various equipment, a direct voltage source that can be varied according to need is required. One way to convert a dc voltage source to a lower dc voltage source is by using a buck converter circuit. This study proposes a buck type direct current converter is porposed to use the Arduino uno as a PWM signal generator circuit to control to control the 24 volt input voltage. The converter output voltage regulation is implemented through a potentiometer and Arduino programming using the simulink Matlab. In this research, a buck converter is tested with output voltage feedback so that the output voltage remains stable. The result of the test that have been carried out show that the buck converter designed in this study has worked well in accordance with objectives. This can be seen from the buck converter output voltage that is in accordance with the reference voltage using a potentiometer that is included in the simulink Matlab program.
Highlights
Abstrak—Pesatnya perkembangan teknologi sampai saat ini membuat banyak perlatan listrik maupun elektronik yang membutuhkan sumber tegangan searah atau direct current yang tegangan keluarannya dapat disesuaikan dengan kebutuhan pemakai
Besarnya duty cycle pulse Width Modulation (PWM) pada rangkaian konverter buck mempengaruhi tegangan keluaran artinya nilai duty cycle PWM berbanding lurus dengan tegangan output referensi
Bekerja sebagai staf pengajar di jurusan teknik elektro Universitas Negeri Padang sejak tahun 2006 sampai sekarang,
Summary
Abstract—The rapid development of technology to date has made many electrical and electronic equipment that require a direct current (dc) voltage source whose output voltage can be adjusted to the needs of the user. Hal ini dapat dilihat dari tegangan output konverter buck yang telah sesuai dengan tengangan referensi menggunakan potensiometer yang dimasukkan dalam program simulink Matlab. Dalam bidang elektronika daya telah banyak teknologi yang berkembang untuk menghasilkan ketersediaan suplai tegangan searah (dc), dimana keluaran dari tegangan searah (dc) ini bisa diubah-ubah menjadi lebih kecil dan lebih besar. Penelitian tentang penggunaan DC Chopper jenis buck telah dilakukan beberapa peneliti, seperti pada penelitian sistem penyimpanan energi listrik ke baterai menggunakan rangkaian buck konverter yang menggunakan Arduino sebagai kontroler dengan metode pulse Width Modulation (PWM)[8], untuk menurunkan dan menstabilkan tegangan sebesar 14,4 Volt sehingga tidak melewati ambang batas pengisian baterai yaitu 14,4 – 15 VDC untuk mejaga baterai agar tidak cepat rusak. Kendali tegangan output konverter buck dirancang menggunakan metode penguatan proporsional yang di implementasikan dengan Arduino yang di program dengan software simulink Matlab. Rancangan konverter buck yang diusulkan dalam penelitian ini dijabarkan menggunakan blok diagram
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