Ditemukan 4 dokumen yang sesuai dengan query
Muhammad Levy Aninditio
"The energy crisis in the future will be a threat for human life. Many advancement of technology currently focus on creating something that perform better than its predecessor but consuming less power. LED lighting technology has been introduced as a breakthrough of technology which possesses big advantages over the other lighting technology. LED lighting technology is able to produce a high luminous flux with very low power consumption, and also lasts longer than others. By consuming lower power, hence the amount of energy being consumed in order to generate the same amount of light will be reduced, and hence, energy saving will happen.
This undergraduate thesis discusses replacement analysis of lighting at classrooms at Engineering Center of Faculty of Engineering Universitas Indonesia. The analysis is in terms of illuminance aspect, power quality performance and cost, and it is done by replacing the existing CFL with three different options of LED lamp exist in the market with competitive price. The study suggests that using LED lamp as a replacement for CFL at classrooms at Engineering Center of Faculty of Engineering Universitas Indonesia is more efficient consuming less energy by 42.86 , and moreover saving the electricity cost as well, from IDR 864,360 annually to IDR 493,920. A comparative analysis between the three different LED lamp options is also performed. "
Depok: Fakultas Teknik Universitas Indonesia, 2016
S66112
UI - Skripsi Membership Universitas Indonesia Library
Septyono Utomo
"Perkembangan teknologi dan pertumbuhan penduduk membuat konsumsi energi terus meningkat sehingga diperlukan penghematan. Salah satu cara melakukan penghematan tersebut adalah dengan penghematan konsumsi energi untuk penerangan. Seiring dengan kemajuan teknologi pun muncul Lampu LED (Light Emitting Diode). LED merupakan lampu dengan konsumsi daya yang rendah bila dibandingkan dengan lampu penerangan lainnya seperti misalnya lampu hemat energi. Lampu LED membutuhkan catu tegangan arus searah. Karena itu lampu LED membutuhkan rangkaian untuk mengubah catu tegangan arus bolak-balik menjadi catu tegangan arus searah. Selain itu lampu LED harus memiliki distribusi cahaya yang baik agar dapat digunakan untuk penerangan. Karena itu dilakukan pengujian untuk melihat perbandingan panas serta pengujian untuk melihat bagaimana distribusi cahaya lampu LED bila dibandingkan dengan lampu hemat energi. Dan dari hasil yang didapat Lampu LED memiliki panas yang lebih rendah dibandingkan dengan lampu hemat energi. Sementara lampu hemat energi memiliki distribusi cahaya yang lebih baik dibandingkan lampu LED.
The development of technology and population growth make electrical energy consumption increased so that the savings needed to be made. One way to savings on energy consumption is savings energy consumption for illumination. Along with advances in technology arises LED lamps (Light Emitting Diode). LED (Light Emitting Diode) Lamps is a lamp with low power consumption when compared with other lamps, like energy-saving lamp (LHE). LED lamps require direct current voltage supply. Therefore, the LED lights require electrical circuit to convert the alternating current voltage supply into direct current voltage supply. Futhermore LED lamps should have good light distribution to be used for illumination. Because of that testing of lamps was to compare the heat distribution and light distribution between LED lamps and energy-saving lamps. And from the result LED lamps have lower heat than enery saving lamps. While energy-saving lamps have better light distribution than LED lamps."
Depok: Fakultas Teknik Universitas Indonesia, 2014
S56945
UI - Skripsi Membership Universitas Indonesia Library
Anthony Ryan
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ABSTRAKLampu LED berbasis air garam merupakan alternatif sumber energi listrik untuk penerangan yang ramah lingkungan. Aluminium mempunyai potensi sebagai pengganti elektroda yang lebih murah dan tetap memiliki performa yang baik sebagai elektroda. Batang elektroda aluminium yang dirangkai dengan seri dapat menghasilkan listrik menggunakan elektrolit larutan garam. Pengujian dengan elektrolit air garam dilakukan dengan menggunakan pelarut 380 ml air. Pada jumlah garam 18 gr dihasilkan tegangan 4,12 Volt dan arus listrik 0,19 Ampere, sementara pada garam 28 gr dihasilkan tegangan 4,49 Volt dan arus listrik 0,21 Ampere. Pada pengujian waktu operasi, pada elektrolit air garam dengan garam 18 gr menghasilkan waktu maksimum operasi ± 88 jam pemakaian. Kemudian, kedua macam pengujian dilakukan kembali menggunakan elektrolit air laut guna mengetahui kelayakan kedua jenis karakteristik elektroda aluminium pada air laut. Pengujian tersebut menghasilkan tegangan maksimum 3,98 Volt dan arus listrik maksimum 0,22 Ampere dan menghasilkan waktu maksimum operasi ± 80 jam. Dibandingkan dengan penelitian sebelumnya menggunakan elektroda magnesium, disimpulkan bahwa elektroda aluminium dapat dirangkai sedemikian rupa untuk mendapatkan hasil karakter kelistrikan yang mendekati magnesium, namun secara keseluruhan elektroda aluminium perlu diuji campuran logam (alloy) untuk mendapatkan hasil yang lebih baik.
ABSTRACTSalt-water based LED light is an alernative source of electrical energy for environmentally-friendly lighting. Aluminum has the potential as a substitute for cheaper electrodes and still has good performance as an electrode. Alumunium electrode rods that has been arranged in series electrical circruits can produce electricity using the electrolyte saline solution. The study that is done with brine electrolyte was carried out using 380 ml of water solvent. At the amount of 18 gr salt, it produced a max voltage of 4,12 Volt and a max electric current of 0,19 Ampere, while the 28 gr of salt produced a max voltage of 4,49 Volt and a max electric current of 0,21 Ampere. In testing the operating time, the salt electrolyte with 18 gr salt produces a max operating time of ± 88 hours of use. Then, the two types of tests were carried out again using seawater electrolyte to determine the feasibility of the two types of characteristics of aliminum electrodes in seawater. The test produces a max voltage of 3,98 Volt and a max electric current of 0,22 Ampere and produces a max operating time of ± 80 hours. Compared with previous studies using magnesium electrodes, it is concluded that aluminum electrodes can be arranged in such a way as to obtain electrical characteristics that are close to magnesiums results, but overall aluminum electrodes need to be tested by a mixture of metals (alloy) to get better testing results."
2019
S-pdf
UI - Skripsi Membership Universitas Indonesia Library
Ridho Wibowo
"Penggunaan lampu LED di Indonesia meningkat sejak tahun 2013. Lampu LED memiliki keunggulan faktor konsumsi daya yang rendah dan efisiensi yang tinggi. Lampu LED merupakan beban non-linier yang menyebabkan distorsi harmonik pada sistem tenaga listrik. Distorsi harmonik tersebut merupakan emisi arus harmonik yang mengakibatkan panas berlebih pada inti magnet peralatan listrik yang terkoneksi dalam satu jaringan listrik yang sama. Oleh karena itu, diperlukan batasan nilai emisi arus harmonik untuk meningkatkan optimasi kinerja pada lampu LED. Pada penelitian ini dilakukan pengujian emisi arus harmonik lampu LED yang memiliki rangkaian driver internal. Sebanyak 35 sampel dari 7 merek dengan jenis peringkat daya 3 Watt, 5 Watt, 7 Watt, 11 Watt dan 15 Watt diuji. Proses untuk mendapatkan nilai arus harmonik orde ke-3 dan orde ke-5 dilakukan dengan metode Fast Fourier Transform (FFT). Nilai arus harmonik yang terukur akan dibandingkan dengan persyaratan pada Standar SNI IEC 61000-3-2 tentang batas emisi arus harmonik untuk arus input perangkat ≤ 16 Ampere per fase. Pengembangan disain model filter pasif eksternal diterapkan untuk melakukan analisis optimasi kinerja pada lampu LED. Frekuensi cut-off pada model filter pasif dirancang pada frekuensi sekitar 150 Hz. Hasil pengujian awal (tanpa filter eksternal) menunjukan nilai emisi arus harmonik yang melebihi persyaratan SNI IEC 61000-3-2. Selanjutnya, dilakukan pengujian emisi arus harmonik pada lampu LED dengan tambahan model filter eksternal. Hasil pengujian arus harmonik setelah ditambahkan model filter eksternal menunjukan pengurangan nilai arus harmonik pada orde ke-3 dan ke-5 yang tidak melebihi batas emisi arus harmonik pada persyaratan standar SNI IEC 61000-3-2. Hasil penelitian keseluruhan menunjukkan rangkaian model filter eksternal dapat menurunkan emisi arus harmonik orde ke-3 dan orde ke-5, serta meningkatkan power factor sampel lampu LED di setiap peringkat kategori daya. Sedangkan nilai faktor Q pada komponen filter eksternal mempengaruhi perubahan intensitas cahaya lampu LED. Semakin besar nilai faktor Q menyebabkan peningkatan intensitas cahaya lampu LED.
The use of LED lamps in Indonesia has increased since 2013. LED lamps have the advantages of low power consumption and high efficiency. However, LED lights are non-linear loads that cause harmonic distortion in the electrical power system. This harmonic distortion is the emission of harmonic currents, resulting in overheating the magnetic core of electrical equipment connected to the same electrical network. Therefore, it is necessary to limit the emission value of harmonic currents to improve the performance optimization of LED lamps. In this study, the conducted harmonic current emission tests LED lamps with an internal driver circuit. A total of 35 samples from 7 brands with power ratings of 3 Watt, 5 Watt, 7 Watt, 11 Watt, and 15 Watt tested. The initial test conduct to get the value of the 3rd and 5th order harmonic currents. The process of obtaining the value of the 3rd order and 5th order harmonic currents using the Fast Fourier Transform (FFT) method. The measuring harmonic current values compare with the requirements in SNI IEC 61000-3-2 standard regarding the emission limits of harmonic currents for device input currents ≤ 16 Ampere per phase. Development of the external passive filter model design is applied to perform an optimization analysis of the performance of the LED lamp. In passive filter models, the cut-off frequency design at a frequency of around 150 Hz. The initial test results (without an external filter) show the emission value of harmonic currents that exceed the requirements of SNI IEC 61000-3-2. Subsequently, testing the emission of harmonic currents on LED lamps with an external filter model. The harmonic current test results after adding the external filter model show a reduction in the value of harmonic currents in the 3rd and 5th orders, which do not exceed the emission limits of harmonic currents in the requirements of the SNI IEC 61000-3-2 standard.The overall research results show that the external filter model series can reduce the emission of 3rd and 5th order harmonic currents and increase the power factor of the LED lamp samples in each power category rating. Meanwhile, the value of the Q factor on the external filter component affects changes in the light intensity of the LED lamp. The greater the value of the Q factor causes an increase in the light intensity of the LED lamp. "
Depok: Fakultas Teknik Universitas Indonesia, 2021
T-pdf
UI - Tesis Membership Universitas Indonesia Library
