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All Journal Jurnal Informatika dan Teknik Elektro Terapan Journal of Engineering and Scientific Research (JESR)
Nining Purwasih
Department of Electrical Engineering, Faculty of Engineering, Universitas Lampung, Jalan Prof. Soemantri Brojonegoro No. 1, Bandar Lampung, 35143 Indonesia
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Engineering Industrial & Manufacturing Engineering

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Dashboard Monitoring Atmospheric Corrosion Sensor in Material Metal Using Laravel Framework Nima Rohmalia; Gigih Forda Nama; Nining Purwasih
Journal of Engineering and Scientific Research Vol. 3 No. 1 (2021)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (662.38 KB) | DOI: 10.23960/jesr.v3i1.52

Abstract

Corrosion is a chemical reaction that occurs in materials made of iron such as steel.  Steel that is experiencing corrosion will appear dark brown spots, the longer it is getting more and more and can cover the entire surface. Corroded steel will result in a major deterioration and structural failure because the thickness of the steel will decrease over a period of time, so the safety of the building is clearly not guaranteed. Research on the tools used to detect the corrosion value of steel has been carried out. However, not using the internet of things technology. Therefore, a web-based corrosion monitoring or monitoring system was designed. The web will display data on voltage and temperature values ??in the form of numbers and charts. In addition, the website can also send SMS and Whatsapp message notifications if the value obtained exceeds the threshold. In developing this website using the prototype method, Laravel Framework, PHP and Java programming languages, MySQL database, Guzzle, and Whatspie as automatic message sending bots. System can provide information of monitoring regarding dummy, active and delta voltage along with their time and temperature.
Frequency Stability Control In Low -Inertia Power System Using Virtual Synchronous Generator Novia Utami Putri; Khairudin khairudin; Nining Purwasih
Journal of Engineering and Scientific Research Vol. 3 No. 1 (2021)
Publisher : Faculty of Engineering, Universitas Lampung Jl. Soemantri Brojonegoro No.1 Bandar Lampung, Indonesia 35141

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1417.338 KB) | DOI: 10.23960/jesr.v3i1.56

Abstract

The stability of the electric power system is divided into transient stability, steady state stability and dynamic stability. Things that affect the performance of the generator include the addition of generators, changes in the load that vary in the system which have an impact on system stability and the distance between the generator and the load. The addition of a Virtual Synchronous Generator (VSG) is needed to improve the power system that is integrated with Renewable Energy Systems Source in maintaining system stability. When the integration between conventional generators and Renewable Energy Systems Source without Virtual Synchronous Generator (VSG) has a frequency response of 58.2 Hz when the generating capacity is -40% of the initial state, while integration between conventional generators and Renewable Energy Systems Source with Virtual Synchronous Generator (VSG) has a steady state response of 60 Hz even though the generating condition is 40% of the initial capacity of the generator. This means that the Virtual Synchronous Generator (VSG) can stabilize the return frequency in its nominal value on the system. Keywords : Inertia, Conventional Generating, Renewable Energy Systems Source, Virtual Synchronous Generator (VSG).  
PERANCANGAN SISTEM TRANSFER ENERGI SECARA WIRELESS DENGAN MENGGUNAKAN TEKNIK RESONANSI INDUKTIF MEDAN ELEKTROMAGNETIK Berri M Panggabean; Herman Halomoan; Nining Purwasih
Jurnal Informatika dan Teknik Elektro Terapan (JITET) Vol 2, No 2 (2014)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (644.857 KB) | DOI: 10.23960/jitet.v2i2.234

Abstract

Abstrak  Energi listrik merupakan salah satu kebutuhan pokok yang sangat penting dalam kehidupan manusia saat ini, di mana sampai saat ini pengiriman energi listrik komersial tegangan rendah 220 volt masih mempergunakan kabel listrik. Salah satu cara pengiriman atau transfer energi listrik yang terus dikembangkan sampai saat ini adalah transfer energi listrik  wireless.  Transfer energi listrik  wireless  memiliki  beberapa  kelebihan  dibandingkan menggunakan kabel  yaitu  dapat  meningkatkan kenyamanan dalam penggunaan peralatan listrik  dan  dapat mengurangi jumlah sampah elektronik. Metode yang digunakan untuk  transfer energi wireless pada tugas akhir ini menggunakan  teknik  resonansi induktif medan elektromagnetik.  Pengguna membuat  dua buah  kumparan tembaga berbentuk selenoid yang digunakan untuk menghasilkan induktansi bersama. Rangkaian transfer energi listrik wireless terdiri dari dua yaitu rangkaian pengirim dan rangkaian penerima. Rangkaian pengirim terdiri dari rangkaian LC osilasi dan rangkaian penerima merupakan penggabungan beberapa komponen elektronika.  Realisasi alat bekerja dengan baik dengan pengaturan komponen yang sesuai. Namun pengaruh jarak dan sudut kemiringan antar kumparan sangat mempengaruhi nilai energi listrik yang mampu ditransfer. Semakin jauh jarak antar kumparan,  maka semakin kecil energi yang mampu ditrasfer, demikian juga dengan sudut kemiringan kumparan. Semakin miring sudut kumparan penerima, maka semakin kecil energi listrik yang dihasilkan. Kata kunci :  induktansi bersama,   kumparan tembaga, rangkaian pengirim, rangkaian penerima, transfer energi wireless. Abstract  Electrical energy is one of the basic needs that are essential in human life today,  where until today the delivery of electrical energy commercial low voltage 220 volts still using power cable. One way of delivery or transfer of electric energy are constantly being developed to date  is the transfer of electrical energy wireless. Transfer of electrical energy wireless has several advantages over using a cable that can increase comfort in the use of electrical equipment and can reduce the amount of electronic waste. The method used for  wireless energy transfer in this paper uses an resonance techniques inductive electromagnetic field. User create two shaped copper solenoid coils used to generate the mutual inductance. Wireless electrical energy transfer circuit consists of two circuits that the transmitter and receiver circuit. Transmitter circuit consists of a series LC oscillation andreceiver circuit is a merger several electronic components. Realization tool works well with setting the appropriate components. However, the effect of distance and tilt angle between the coil greatly affect the value of the electricity that is able to be transferred. The farther away the distance between the coils, the smaller energy capable to be transfer. as well as the slope angle the coil. The more sloping angle of the receiver coil, the smaller the electric energy is generated.  Key word : mutual inductance, copper coils, transmitter circuit, receiver circuit, wireless energy transfer 
ANALISIS TEGANGAN TEMBUS PADA MINYAK JARAK (Castor Oil) SEBAGAI ALTERNATIF ISOLATOR MINYAK TRANSFORMATOR Agung Ansori; Nining Purwasih; Herman H Sinaga; Diah Permata
Jurnal Informatika dan Teknik Elektro Terapan Vol 10, No 2 (2022)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (405.368 KB) | DOI: 10.23960/jitet.v10i2.2440

Abstract

Isolasi transformator berbasis minyak mineral memiliki beberapa masalah yaitu tidak ramah lingkungan, tidak dapat terurai, tidak dapat diperbarui, dan jarang. Minyak nabati adalah alternatif isolasi transformator yang salah satunya adalah minyak jarak. Penelitian ini bertujuan untuk mendeskripsikan minyak nabati yaitu minyak jarak sebagai alternatif minyak mineral untuk bahan isolasi pada transformator. Minyak jarak didapatkan dari proses pengepresan biji jarak dan penyaringan minyak jarak. Hasil pengukuran kadar air dan tegangan tembus serta pengaruh proses pemanasan terhadap kadar air dan tegangan tembus dari minyak jarak dianalisis dalam penelitian ini. Penelitian ini menemukan bahwa kadar air dalam minyak jarak murni adalah sebesar 0,33 % dan tegangan tembus dalam minyak jarak murni adalah 13,9 kV, proses pemanasan yang dilakukan terhadap minyak jarak mempengaruhi kadar air di dalam minyak dan meningkatkan nilai tegangan tembus dari minyak jarak.
Analisa Dampak Penggunaan Filter L-C-L Terhadap Kinerja Pengatur Kecepatan Motor Induksi M.Fawwaz Rizaldy; Khairudin Khairudin; Noer Soedjarwanto; Nining Purwasih
Jurnal Informatika dan Teknik Elektro Terapan (JITET) Vol 10, No 1 (2022)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (841.803 KB) | DOI: 10.23960/jitet.v10i1.2254

Abstract

Pengaturan kecepatan motor dilakukan dengan mengubah tegangan input, ataupun frekuensi yang terdapat pada motor. Maka hal yang lebih mungkin dilakukan adalah dengan mengubah kecepatan motor dengan mengubah frekuensi pada sumber stator. Inverter bisa digunakan sebagai pengontrol yang dapat mengatur kecepatan pada motor induksi, topologi inverter yang digunakan adalah diode clamped multilevel inverter tetapi inverter masih mengandung harmonisa yang cukup tinggi, sehingga inverter memerlukan filter untuk mengurangi besarnya harmonisa. Filter yang digunakan adalah filter pasif L-C-L, Kapasitas atau ukuran dari filter yang dibutuhkan akan semakin besar berbanding lurus dengan besar daya yang digunakan.Kata kunci — Diode clamped multilevel inverter, Harmonisa, Filter, Pengaturan kecepatan.
Co-Authors Agung Ansori Berri M Panggabean Diah Permata Gigih Forda Nama Herman Halomoan Herman Halomoan Sinaga Khairudin Khairudin Khairudin M.Fawwaz Rizaldy Nima Rohmalia Noer Soedjarwanto Novia Utami Putri