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Alfeus Sunarso
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Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Pengembangan Monitoring System dan Electronic Load Controller pada Pembangkit Listrik Tenaga Arus Sungai (PLTAS) Dominikus Sulistiono; Seno D. Pandjaitan; Managam Managam; Alfeus Sunarso; Agato Agato; Gunawan Widodo; Halasan Sihombing
Jurnal Otomasi Kontrol dan Instrumentasi Vol 8 No 2 (2016): Jurnal Otomasi Kontrol dan Instrumentasi
Publisher : Pusat Teknologi Instrumentasi dan Otomasi (PTIO) - Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/joki.2016.8.2.7

Abstract

Paper ini menggambarkan tentang pengembangan electronic load controller (ELC) yang dilengkapi dengan sistem pemantau parameter kelistrikan untuk generator sinkron pada pembangkit listrik tenaga arus sungai (PLTAS). Di sini generator sinkron dapat menghasilkan frekuensi dan tegangan yang konstan jika beban listrik dan debit air terjaga konstan. Pada kondisi daya yang dibangkitkan lebih besar dari beban konsumen, ELC menjaga frekuensi dan tegangan konstan dengan menambahkan beban penyeimbang. ELC yang dikembangkan ini terdiri dari  zero crossing detector, microcontroller atmega32, beban penyeimbang (ballast load) dan rangkaian pemicu TRIAC. Sistem pemantau melengkapi ELC sebagai alat bantu dalam melihat karakteristik parameter pembangkit dan pola konsumsi beban, serta mempermudah dalam troubleshooting. Sistem pemantau ini terdiri dari sensor arus non invasive SCT 013 005, real time clock (RTC), rangkaian pengkondisi sinyal, sensor tegangan, lcd display, module sd card dan microcontroller atmega32. Saat ini sistem sudah dioperasikan selama lima bulan di PLTAS Nanga Manjang Kabupaten Sekadau Provinsi Kalimantan Barat. Dari data dalam tiga hari  yang tercatat pada sd card menunjukkan, bila arus pada beban pengguna rendah, maka arus pada beban penyeimbang meningkat, sehingga tegangan yang dihasilkan konstan dan frekuensi tidak melebihi dari 50,5 Hz. 
SIMULASI NUMERIK ALIRAN FLUIDA PADA KINCIR AIR MENGGUNAKAN METODE SLIDING MESH INTERFACE Agato, Agato; Deendarlianto, Deendarlianto; Indarto, Indarto; Alfeus Sunarso
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1634

Abstract

This research is aimed to investigate the accuracy and cost-effectiveness of numerical simulation method for the study of flow in a waterwheel system by comparing the results to the results of experiment, as well as by comparing the computational load of various solution schemes. The simulation is performed using Ansys Fluent with sliding mesh interface (SMI) method to treat the interface between rotating waterwheel region and static channel region. The governing equations are solved using the SIMPLE and Coupled schemes, and the effects of spatial and temporal resolutions are investigated. In general, the values of torque and power and the flow patterns obtained using numerical simulation are in a good agreement with those obtained using the experiment, which confirms the reliability of the simulation method. Considering the accuracy and computational load, it is recommended to use the Coupled scheme instead of the SIMPLE scheme for numerical simulation using SMI method.
SIMULASI NUMERIK ALIRAN FLUIDA PADA KINCIR AIR MENGGUNAKAN METODE SLIDING MESH INTERFACE Agato, Agato; Deendarlianto, Deendarlianto; Indarto, Indarto; Alfeus Sunarso
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1634

Abstract

This research is aimed to investigate the accuracy and cost-effectiveness of numerical simulation method for the study of flow in a waterwheel system by comparing the results to the results of experiment, as well as by comparing the computational load of various solution schemes. The simulation is performed using Ansys Fluent with sliding mesh interface (SMI) method to treat the interface between rotating waterwheel region and static channel region. The governing equations are solved using the SIMPLE and Coupled schemes, and the effects of spatial and temporal resolutions are investigated. In general, the values of torque and power and the flow patterns obtained using numerical simulation are in a good agreement with those obtained using the experiment, which confirms the reliability of the simulation method. Considering the accuracy and computational load, it is recommended to use the Coupled scheme instead of the SIMPLE scheme for numerical simulation using SMI method.
Co-Authors . Agato Agato, Agato Deendarlianto Dominikus Sulistiono Gunawan Widodo Halasan Sihombing Indarto Indarto Managam Managam Seno Darmawan Panjaitan