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All Journal Journal of Electrical Power Control and Automation (JEPCA)
S Umar Djufri
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Electrical & Electronics Engineering

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PERANCANGAN ATS (AUTOMATIC TRANSFER SWITCH) SATU PHASA MENGGUNAKAN KONTROL BERBASIS RELAY DAN TIME DELAY RELAY (TDR) Riki Rizaldi; S Umar Djufri
Journal of Electrical Power Control and Automation (JEPCA) Vol 1, No 2 (2018): Desember
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (484.257 KB) | DOI: 10.33087/jepca.v1i2.12

Abstract

Pemadaman listrik dapat mengakibatkan terganggunya kontiunitas pelayanan terutama pada aktivitas pelayan pada sektor perdagangan, perhotelan, rumahsakit, maupun industri. Dewasa ini penyaluran energi listrik PLN sering terjadi kegagalan dalam pendistribusian dikarenakan faktor internal maupun faktor eksternal, untuk memenuhi kebutuhan kontiniunitas akan energi listrik maka diperlukan sumber energi listrik lain sehingga jika terjadi pemadaman listrik dari PLN kebutuhan konsumen akan energi listrik tidak terganggu. Sumber-sumber energi listrik ini bersifat sementara  untuk melayani beban listrik dalam pemanfaatan energi listrik PLN menjadi sumber energi utama. ATS (Automatic Transfer switch), adalah alat yang berfungsi untuk memindahkan koneksi antara sumber tegangan listrik satu dengan sumber tegangan listrik lainnya secara automatis. Atau bisa juga disebut Automatic COS (Change Over Switch), pada penelitian ini akan dirancang sebuah ATS satu phasa dengan mereduksi jumlah Kontaktor untuk mendapatkan hasil yang lebih ekonomis dan mudah dalam perawatannya. ATS dalam penelitian ini menggunakan rangkaian kontrol berbasis relay dan Time Delay Relay (TDR). Dari hasil pengujian, alat ini dapat bekerja dengan baik pada proses switching secara manual maupun secara otomatis. Pada saat PLN terjadi pemadaman, terdapat penundaan waktuselama ± 6 detik sebelum genset melakukan starting. Hal ini bertujuan untuk menjaga komponen-komponen agar tidak rusak jika kadang kala PLN terjadi pemadaman sesaat.  
Perancangan VFD Motor Induksi 1 Phase Untuk Pengaturan Awal Kecepatan Mobil Listrik Leily Wustha Johar; S Umar Djufri; Hendi Matalata
Journal of Electrical Power Control and Automation (JEPCA) Vol 4, No 2 (2021): Desember
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jepca.v4i2.51

Abstract

Variable speed drives and the importance of controlling the speed of existing motors have attracted much attention with the advent of new electrical devices and magnetic materials. This paper is a comprehensive review of the application of VFD in energy saving electric motors. The aim is to identify energy saving opportunities and apply variable speed drives to existing electric motor applications. In this paper the authors hope to provide useful information for future variable speed drive applications such as fans, pumps, coolers, ventilators and as electric car propulsion. In this study, a series of frequency changes has been tested as an induction motor speed regulation (VFD), which in the results of this frequency change research can regulate the speed of the induction motor. In this study, the frequency change is still regulated analogously by changing the resistor size on the PWM signal generator IC for the MOSFET driver. For that the next research is expected to change the frequency can be done digitally
Analisis Awal Potensi Renewable Energy di Bawah Jembatan Aur Duri II Jambi S Umar Djufri
Journal of Electrical Power Control and Automation (JEPCA) Vol 1, No 1 (2018): Juni
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (617.586 KB) | DOI: 10.33087/jepca.v1i1.5

Abstract

The city of Jambi is dibentangi River batanghari, study on utilization of renewable electricity in particular an against water power through Streams need to be consider for perencanan Micro Hydro power plant (PLTMH). Water conditions that can be utilized as a resource (resources) electric generator has a capacity of flow and elevation of water channel system. The main problems in hydropower generation is the availability of water of the river discharge as energy for propulsion power plant. Therefore it takes a specific technique to predict the potential flow of river water on all the time or signature debit River that can be used for energy micro hydro power plant, not the onset of rain with a long time as well as the condition of watersheds (DAS) that can cause critical flow of river water into small even dried up. River discharge measurements manually at any given time can only represent the volume of discharge of the River at the time of measurement is performed. Changes that occur due to the onset of rain in the next time, or decrease in discharge of the River because the groundwater deposits shrink, can not be observed with either it needs to be planned debit kontiniu for turbine generator round capacity taking into account the capacity of electricity from generators that can be optimally raised
Co-Authors Leily Wustha Johar Matalata, Hendi Riki Rizaldi