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Lie Jasa
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PS Magister Teknik Elektro Fakultas Teknik Unud Jalan PB Sudirman, Denpasar, Bali, Indonesia
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Majalah Ilmiah Teknologi Elektro
Published by Universitas Udayana
ISSN : 16932951     EISSN : 25032372     DOI : https://doi.org/10.24843/MITE
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering
Majalah Ilmiah Teknologi Elektro (MITE) is peer review journal, published twice a year by the Study Program of Magister Electrical Engineering, Faculty of Engineering, Universitas Udayana. This journal discusses the scientific works containing results of research in the field of electrical, include power systems, telecommunications, informatics, and electronics. Authors are expected to include original scientific papers in accordance with the scope of the discussion of this journal including all aspects of the theory and practice are used.
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 611 Documents
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PENGGUNAAN METODE URUTAN (SEQUENCE METHOD) PADA ANALISIS HARMONISA UNTUK SISTEM KELISTRIKAN TAK-SEIMBANG I Wayan Rinas
Jurnal Teknologi Elektro Vol 6 No 1 (2007): (January - June) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

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Abstract

Peningkatan beban-beban nonlinier yang terpasang pada sistem akan menyebabkan terjadinya distorsi harmonisa. Distorsi harmonisa pada bentuk gelombang tegangan dan arus dapat mengakibatkan kondisi tidak normal pada sistem.Pada sistem 3 phasa nonlinier, distorsi harmonisa akan menyebakan kondisi takseimbang. Tegangan takseimbang dapat memunculkan komponen urutan negatif dan urutan nol yang merugikan sistem. Komponen urutan negatif akan mengakibatkan peningkatan panas yang berlebihan, sedangkan komponen urutan nol disamping dapat menyebabkan peningkatan rugi-rugi pada jaringan transmisi juga mengakibatkan gangguan pada sistem proteksi dan masalah interference.Analisis harmonisa dilakukan untuk mengevaluasi efek distorsi dari arus dan tegangan non-sinusoidal pada sistem daya listrik .
ANALISIS PERBANDINGAN PENGGUNAAN FILTER PASIF DAN FILTER AKTIF UNTUK MENANGGULANGI THD PADA SISTEM KELISTRIKAN DI RUANG PUSKOM JURUSAN TEKNIK ELEKTRO FAKULTAS TEKNIK UNIVERSITAS UDAYANA I Wayan Rinas
Jurnal Teknologi Elektro Vol 10 No 1 (2011): (January - June) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

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Abstract

Beban-beban nonlinear yang terpasang pada sistem tenaga listrk akan menyebabkan terjadinya distorsi harmonisa. Distorsi harmonisa pada bentuk gelombang tegangan dan arus dapat mengakibatkan kondisi tidak normal pada sistem kelistrikannya, seperti beban-beban yang dioperasikan di Lab Puskom Jurusan Teknik Elektro Fakultas Teknik Universitas Udayana memiliki kandungan harmonisa yang tidak sesuai dengan standar yang berlaku. Akibat yang dapat ditimbulkan dari kandungan THD (Total Harmonics Distortion) arus yang berlebih dapat mengganggu peralatan elektronik yang bersifat sensitif, pemanasan berlebih, mengurangi umur kerja peralatan dan meningkatkan rugi-rugi daya.  Untuk mengatasi masalah harmonisa ini akan disimulasikan pengoperasian filter aktif shunt dan filter pasif shunt yang bertujuan untuk meredam harmonisa yang muncul. Dalam penelitian ini dilakukan simulasi penggunaan filter aktif dan pasif dengan menggunakan sofware simulink MATLAB 7.0.4, pengelompokkan jenis beban nonlinear, perhitungan daya aktif (P) dan arus beban (IL), simulasi pada sistem sebelum dan sesudah penggunaan filter aktif dan pasif, analisa perbandingan antara filter aktif dan filter pasif, analisis daya distorsi (D), dan analisis THD hasil simulasi sesuai dengan IEEE 152-1992. Hasil analisis menunjukkan pemasangan filter aktif menyebabkan terjadi penurunan kandungan THD arus yang lebih significan dibandingkan dengan filter pasif. Kandungan THD arus setelah pemasangan filter telah sesuai dengan IEEE 152-1992. Distorsi daya yang disebabkan oleh harmonisa pada sistem akan mengalami penurunan dan terjadi peningkatan faktor daya yang mendekati unity power factor pada feeder
Analisis Kualitas Citra Medis Terkompresi JPEG Derry Suia Pathentantama; I Made Oka Widyantara; Rukmi Sari Hartati
Jurnal Teknologi Elektro Vol 18 No 2 (2019): (Mei-Agustus) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2019.v18i02.P12

Abstract

Basically, image compression technology is a basic step to compress images so that they can be transmitted more quickly and save storage space in storage media. This is a breakthrough that was created in 1920. This research is applied research that focuses on the application of JPEG algorithms based on the value of PSNR. This study uses X-Ray image data as input data, where the image will be searched for the optimal compression ratio of 9 compression ratios (10% -90%). A total of 10 test data were used. From the table results of system testing using test images, it can be seen that the characteristics of PSNR are able to determine the compression ratio of medical images optimally. and the higher the image compression ratio applied to the test image, the higher the quality of the reconstructed image. This can be seen in the PSNR value table, where the PSNR value increases in each compression ratio.
Survei Tentang Analisis Sentimen Pada Media Sosial putri agung permatasari; Linawati linawati; Lie Jasa
Jurnal Teknologi Elektro Vol 20 No 2 (2021): (Juli-Desember) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2021.v20i02.P01

Abstract

Media sosial saat ini telah menjadi bagian penting dalam kehidupan sehari-hari tidak hanya untuk kebutuhan pribadi melainkan bisa di gunakan dalam bisnis, serta banyak hal yang bisa dilakukan. Media sosial yang digunakan seperti Facebook, Twitter, Youtube, Instagram, Likenid, dan Whatsapp. Dengan adanya media sosial tersebut banyaknya data yang ada berupa gambar, comment berupa text atau emoticon, video, dan lainnya, sehingga masyarakat bebas beropini. Dengan adanya analisis sentimen opini yang berkembang dan banyak di media sosial tersebut dapat menghasilkan data dan informasi yang bermanfaat. Dalam analisis sentimen diperlukannya algoritma klasifikasi data diantaranya Naive Bayes Classifier, Support Vector Machine, K-NN, RNN, C4.5, Lexicon Based, LDA Based Topic Modeling, dan beberapa algoritma lainnya. Artikel ini menelaah beberapa literature analisis sentimen pada media sosial. Saat ini media sosial yang sering digunakan dalam analisis adalah Twitter dan pengguna algoritma yang dapat meningkatkan tingkat akurasi adalah algoritma Naive Bayes Classifier dan Support Vector Machine. Hasil perhitungan akurasi klasifikasi data berbeda-beda terlihat pada data uji pada penelitian tersebut.
Monitoring Tegangan dan Arus Pada Panel Surya Menggunakan IoT Tole Sutikno; Jekson Alfahri; Hendril Satrian Purnama
Jurnal Teknologi Elektro Vol 22 No 1 (2023): (Januari - Juni) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2023.v22i01.P20

Abstract

Solar panel is a potential technology for harvesting solar energy, especially in tropical countries like Indonesia. Currently, energy harvesting technology based on solar photovoltaic (PV) has reached an advanced stage and is widely applied to various applications. On the other hand, the massive number of PV-based solar power plants (PLTS) makes the maintenance process even more difficult. Therefore, we need a solution that can streamline this maintenance process. With the use Internet of Things (IoT) Technology, we can monitor the health conditions of PLTS online and real-time. This study uses the NodeMCU ESP8266 microcontroller and the INA219 sensor to monitor current and voltage at PLTS system, then the data will be sent via the internet to the Blynk application. The research method used is to collect data every 10 minutes in the morning, afternoon, and evening. The results showed that the use of the NodeMCU ESP8266 microcontroller and the Blynk IoT platform for solar panel current and voltage monitoring applications can reduce production costs with optimal and stable measurement and monitoring results. Keyword— Blynk; Internet of Things; Monitoring; NodeMCU; Solar Panel.
KAJIAN ENERGI SURYA UNTUK PEMBANGKIT TENAGA LISTRIK I Gusti Ngurah Nitya Santhiarsa; I Gusti Bagus Wijaya Kusuma
Jurnal Teknologi Elektro Vol 4 No 1 (2005): (January - June) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

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Abstract

Solar cell is an energy conversion that changed solar energy into electrical energy. The energy produced by solar cell is the most energy which safe to the environment, but the area covered of its installation will be very wide. Beside that, solar cell most depends on the intensity of sun radiation, for where its continuity is questionable and become another problem. In order to make solar energy as an electrical power generator, the weakness of the problem should be eliminated. This paper will explain how solar energy could be used as an alternative energy in order to anticipate the electrical crisis in Bali.
ANALYSIS POSITIONING OF NOTEBOOK PRODUCED BY HEWLETT PACKARD (HP) IN BALI PROVINCE Ni Wayan Sri Ariyani; I Putu Gde Sukaatmadja; Nym Dayuh Rimbawan
Jurnal Teknologi Elektro Vol 8 No 2 (2009): (July - December) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

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Abstract

Nowadays notebook is not a luxurious thing any more, but has been one of  the things that should be obligatorily owned by high school student, university student, and practitioners. The competition among the notebooks has been getting tight. The reason is that they have been produced with almost similar attributes, qualities, and design but different prices. This study aims at (1) identifying the similarity between the notebook produced by Hewlett Packard (hp) and those produced by its competitors such as, IBM, Sony, Acer and Toshiba, (2) identifying the consumers perception of the notebook produced by Hewlett Packard (hp) and of those produced by its competitors, (3) identifying what is the superiority of the notebook produced by Hewlett Packard (hp) compared with the superiority of those produced by its competitors, and (4) identifying what strategy is relevant in strengthening the positioning of the notebook produced by Hewlett Packard (hp). The samples were determined by purposive sampling, and the respondents employed totaled 100 spreading over Denpasar City. To achieve maximum result, Multi Dimensional Scaling (MDS) was applied as the instrument of analysis to identify the similarity among the notebooks and Correspondence Analysis (CA) was employed as the instrument of analysis to identify the superiority of each variable of every notebook. The result of the study show that the notebook produced by Hewlett Packard (hp) is perceived to resemble those produced by IBM, Sony, and Toshiba. This means that the notebook produced by Hewlett Packard (hp) competes against those produced by IBM, Sony, and Toshiba, and that it does not compete against that produced by Acer. The notebook produced by Hewlett Packard (hp) is superior in the variables of product varieties, post sales, distribution channels, and promotion. The notebook produced by IBM superior in the variable product quality, while that produced by Sony is superior in the variable of product  design, that produced by Toshiba is superior in the variable of  brand image, and that produced by Acer is superior in the variable of price. To strengthen the positioning of the notebook produced by Hewlett Packard (hp), the relevant strategy is perpetually differentiating the product, maintaining the superior variable by creating new varieties, continuously improving the post sales service to every customer, expanding the distribution channels to the regencies, and keeping increasing promotion.
PEMBUATAN PROTOTYPE SISTEM PENGENDALI LAMPU RUMAH DENGAN PERANGKAT MOBILE ANDROID I G. A. K. Diafari Djuni H; I G A P Raka Agung; N. Pramaita; Made Sugiri
Jurnal Teknologi Elektro Vol 14 No 2 (2015): (July - December) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2015.v14i02p05

Abstract

AndroidisaLinux-basedoperatingsystemandis open source that can be developed independently so that more applications can be made. This application can also be integrated with other devices to control or control system is desirable. Media remote control or wireless (LAN) is a growing need for human behavior that want to move faster and farther range of location of residence. This research will be designed and built a prototype system controlling lights at home using Arduino microcontroller connected to mobile devices based on Android. Light control is done on a mobile device that is connected to the control system via WiFi Router lights. Wifi Router has sufficient coverage so that the owners of these devices can move more comfortably without having to control the lights via a switch on the wall of the house. The house lights controller circuit can adjust the lights ON and OFF as well as the Bright and Dim the lamp 1 and lamp 2. Lighting Control Application on mobile android devices already can set the lights on the control circuit.
ANALISIS PEMASANGAN FILTER PASIF UNTUK MENANGGULANGI DISTORSI HARMONISA TERHADAP BEBAN NON LINIER DI PT.WISESA GROUP Wahyu Adi Merta; I Gusti Ngurah Janardana; I Wayan Arta Wijaya
Jurnal Teknologi Elektro Vol 16 No 2 (2017): (May - Agustus) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2017.v16i02p16

Abstract

PT.Wisesa Group terletak di jalan Hayam Wuruk No 199 Denpasar, PT.Wisesa Group mempunya 2 gedung dan 1 bangunan gudang dimana daya yang terpasan sebesar 197 KVA. Hampir semua peralatan listrik yang ada saat ini berbasiskan mikro elektronik. Peralatan jenis ini merupakan jenis beban non linier. Pemasangan filter pasif yang bertujuan untuk meredam harmonisa yang melebihi standar IEEE 519-1992. Dalam penelitian ini dilakukan simulasi penggunaan filter pasif type c menggunakan sofware etap, pengelompokkan jenis beban non linear, perhitungan daya aktif (P) dan arus beban (IL), simulasi pada sistem sebelum dan sesudah penggunaan filter pasif. Hasil analisis menunjukkan pemasangan filter pasif menyebabkan kandungan THD arus dan tegangan telah sesuai dengan standar IEEE 519-1992 yang ditentukan yaitu ? 5%. Daya distorsi harmonisa pada setiap SDP mengalami penurunan. Penempatan filter pasif type c yang terbaik untuk menurunkan THD dan distorsi daya yaitu pada SDP 5 karena dapat menurunkan THD arus terbesar yaitu 31,32 % menjadi 3,48 %.
Estimasi Emisi Gas Rumah Kaca(GRK) Terhadap Konsumsi Energi di Provinsi Bali Ida Bagus Bawa Adiputra; Rukmi Sari Hartati; Wayan Gede Ariastina
Jurnal Teknologi Elektro Vol 17 No 3 (2018): (September - Desember) Majalah Ilmiah Teknologi Elektro
Publisher : Program Studi Magister Teknik Elektro Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/MITE.2018.v17i03.P09

Abstract

Electrical energy is one concerning lives of the people, then provision must be able to ensure the availability of a sufficient number, reasonable prices and good quality. Until now, the use of fossil fuels is still quite high as a primary energy source that is utilized in the process of generating electricity. It has an impact on climate change so that Greenhouse Gases (GHG) arise. The composition of energy use at the end of the projection (2030) uses LEAP software Household consists of the sector amounted to 5.865,1 GWh, Industrial sector of 490.380,6 GWh, Public (Commercial) sector of 3.547,5 GWh, and from Transportation sector as big as 7.220.937,8 BoE. The projection of GHG emissions using LEAP software shows that emissions in 2030 for the Household sector amounted to 8.9115 million tCO2eq, the Industrial sector amounted to 1212.3964 million tCO2eq, the Transportation sector amounted to 26.2161 million tCO2eq, and when the generation of electricity was 33,0955 million tCO2eq. So the total GHG emissions generated are 1,280,6196 million tCO2eq, this amount is an accumulated increase from 2015 of 61.4533 million tCO2eq. To suppress the amount of increase of that size, efforts need to be made such as promoting the use of environmentally friendly energy. Reduce the use of private vehicles and switch to public transportation. The government must also support by providing environmentally friendly mass transportation facilities.

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