Article Per Year (5 Year)
p-Index From 2019 - 2024
1.497
P-Index
This Author published in this journals
All Journal GEMA TEKNOLOGI Sinergi ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Manutech : Jurnal Teknologi Manufaktur Jurnal Indonesia Sosial Teknologi Prosiding Seminar Nasional Inovasi Teknologi Terapan Jurnal Inovasi Teknologi Terapan
Dedy Ramdhani Harahap
Politeknik Manufaktur Negeri Bangka Belitung
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences

Published : 8 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 8 Documents
Search

 1 
Pengujian Performa Baterai Nickel-Metal Hydride (NiMH) Untuk Mobil Listrik Satu Penumpang Pada Kompetisi Balap Mobil Listrik Ene1-Gp Jepang 2017 Dedy Ramdhani Harahap
Manutech : Jurnal Teknologi Manufaktur Vol. 9 No. 01 (2017): Manutech : Jurnal Teknologi Manufaktur
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (730.111 KB) | DOI: 10.33504/manutech.v9i01.25

Abstract

The use of electric vehicles (EVs) is viewed as an attractive solution to reduce CO2 emissions and fuel consumption resulted from transport sector, but the EVs implementation is limited to driving distance and and the charging process that inconvenience. The analysis of energy consumption characteristics of Nickel-Metal Hydride (NiMH) battery that commonly used as the energy source for EVs become an important foundation to study the durability and performance of the battery when applied in addition to increase the driving range from this EVs. This research aims to test the durability and the performance of the Eneloop type of Nickel-Metal Hydride (NiMH) battery that used for the racing car competed on ENE1-GP Japan at Suzuka Circuit Japan. From this experiment will be achieve the energy consumption estimation systematically, based on this data the parameters can be decided accurately for the EVs that attend the competition. The battery will be test under room temperature and the load given during the test from 0.1A to 10A. The average temperature during the performance test were observed using thermal camera. The best result from this experiment is on 5A, the battery will effectively use and can fit the requirement to complete the race in 18 minutes and 49 seconds for 3 cycles (laps). On the other hand, this data also can become the foundation to develop the electric vehicle which has similar specification.
Energy Management of PEMFC and NiMH Battery on 3-wheels Hybrid Electric Vehicle Equipped with CVT DEDY RAMDHAN HARAHAP; WEI-CHIN CHANG; SUGENG ARIYONO
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 9, No 4 (2021): ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektro
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v9i4.902

Abstract

ABSTRAKPenelitian ini mengelola energi dari PEMFC yang diatur untuk mengamati konsumsi energi, kecepatan maksimum, dan kemampuan kendaraan dalam melakukan pendakian. Pemodelan kendaraan listrik dikerjakan menggunakan ADVISOR. Fuel cell yang digunakan 200W sebagai sumber energi utama yang dikombinasikan dengan baterai NiMH sebagai sumber energi cadangannya. Masing-masing baterai NiMH memiliki tegangan sebesar 1,2 V dan 1,9 AH. Kinerja PEMFC dan baterai NiMH diamati dengan memberikan beban sesuai kebutuhan daya pada kendaraan hibrida. Hasil pengujian menunjukkan daya maksimum PEMFC antara 40-60 % daya baterai NiMH sehingga kendaraan dapat tetap bergerak. Energi dipasok oleh baterai ketika daya kendaraan lebih rendah dari 40% sehingga PEMFC dapat berhenti memasok energinya. Ketika daya yang dibutuhkan lebih besar dari daya maksimum PEMFC maka baterai NiMH akan menyeimbangkan pasokan daya ke kendaraan. Mobil hibrida dapat menanjak pada kemiringan 3,5%, konsumsi bahan bakar 40,6 liter/100 km, jarak tempuh sejauh 33,9 m/ 5 det, dan 0,4 km/26,1 det.Kata kunci: Manajemen Energi , ADVISOR, PEMFC, NiMH, CVT ABSTRACT In this research, the PEMFC energy management were set to inspect energy usage, maximum speed, and the ability of the vehicle to climb. The modeling of the electric vehicle is carried out using ADVISOR. The fuel cell with 200W as the main energy source in combination with NiMH batteries as energy source support. Every NiMH battery has a 1.2 V and 1.9 AH. The performance of PEMFC and NiMH batteries was observed by providing a load according to the power requirements of the hybrid car. The test results indicate the maximum power of the PEMFC around 40-60% of the NiMH battery power so the vehicle can keep moving. The battery will supply the energy when the vehicle power is lower than 40% so the PEMFC can stop supplying its energy. When the power needed is larger than the PEMFC maximum power then the NiMH battery will balance the power supply to the car. The hybrid car able to climb a 3.5% slopping road, fuel consumption 40.6 liters/ 100 km, the distance as far as 33.9 m/ 5 s and 0.4 km/ 26.1 s.Keywords: Energy Management, ADVISOR, PEMFC, NiMH, CVT
THE ABILITY OF THE CONTINUOUSLY VARIABLE TRANSMISSION TO CONTROL THE ENGINE AT MAXIMUM POWER: LITERATURE REVIEW Sugeng Ariyono; Bambang Supriyo; Indra Feriadi; Dedy Ramdhani Harahab; Nurul Akmar Akmar Abu Husain
SINERGI Vol 25, No 3 (2021)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2021.3.011

Abstract

Good ride performance is one of the most important key attributes of a passenger vehicle. One of the methods to achieve this is by using Continuously Variable Transmission (CVT). This is because a CVT can provide an almost infinite ratio within its limits smoothly and continuously. The flexibility of a CVT allows the driving shaft to maintain a constant angular velocity over a range of output velocities. New developments in gear reduction and manufacturing have led to ever more robust CVTs, allowing them to be applied in more diverse automotive applications. As CVT development continues, costs will be reduced further, and the performance will continue to improve, making further development and application of the CVT technology desirable. This cycle of improvement will offer CVT a solid foundation in the world's automotive infrastructure. This paper aims to provide some background and relevant information that is necessary for this study. Specifically, a brief description of CVT, advantages and their brief history is presented. This paper also evaluates the current state of CVT, investigate the technology frontline of drivetrain control and the development of CVT. The stepless transmission is able to maintain the engine running at its maximum power.
SISTEM INVENTARISASI PENGGUNAAN PERALATAN DAN BAHAN PADA MEJA PRAKTIKUM PLC DI POLITEKNIK MANUFAKTUR NEGERI BANGKA BELITUNG MENGGUNAKAN BARCODE SCANNER Nofriyani Nofriyani; Adhi Budiono; Charlotha Charlotha; Indra Dwisaputra; Dedy Ramdhani
Gema Teknologi Vol 21, No 2 (2021): October 2020 - April 2021
Publisher : Vocational School Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/gt.v21i2.31659

Abstract

In the Programmable Logic Controller (PLC) course at Polmanbabel, students use a practicum table containing practicum equipment such as computer units, compressors, PLC units, pneumatic valves, sensors, jumper cables, etc. Before and after practicum, students are required to do an inventory of equipment and materials contained on this practicum desk. The inventory process is still done manually, where students write the name of the equipment, check the presence of the equipment, and calculate the amount. The thing that was complained by lecturers was the confiscation of practicum time as a result of the manual inventory process. Based on this, a new inventory system was created that uses the application and is equipped with a barcode scanner that is able to minimize the time and possibility of misplacement of the device. Based on the results of experiments, it can be seen that this system is able to minimize inventory time by an average of 14.65 minutes compared to manual inventory systems.
Pengaruh Bentuk Sirip Straight Angled dan Right Angled Pada Alat Pengering Lada Tipe Rotary Dryer Berbahan Bakar Biomassa Terhadap Parameter Proses Pengeringan Syahrul Khafizam; Syahaji Watama; Indra Feriadi; Dedy Ramdhani
Jurnal Indonesia Sosial Teknologi Vol. 3 No. 02 (2022): Jurnal Indonesia Sosial Teknologi
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1208.734 KB) | DOI: 10.36418/jist.v3i2.343

Abstract

Proses pengeringan lada yang dilakukan petani sekarang masih banyak menggunakan cara tradisional seperti memanfaatkan sinar matahari. Proses pengeringan lada yang masih tradisional dan alami dilakukan dengan cara dijemur di halaman, di area tanah yang luas, dan dipinggir jalan. Iklim dan cuaca juga berpengaruh dalam proses pengeringan tersebut, dikarenakan apabila sudah memasuki iklim hujan dan cuaca mendung maka proses pengeringan lada membutuhkan waktu yang cukup lama. Untuk mengatasi masalah tersebut maka digunakanlah teknologi mesin pengering berputar (rotary dryer) untuk melakukan proses pengeringan lada. Mesin ini merupakan suatu alat pengering berbentuk drum yang berputar. Prinsip kerja dari alat pengering tipe rotary dryer secara umum merupakan alat pengering yang berbentuk sebuah drum yang berputar secara kontinyu yang dipanaskan dengan tungku. Pengeringan pada rotary dryer dilakukan berkali-kali sehingga tidak hanya permukaan atas yang mengalami proses pengeringan, namun juga pada seluruh bagian secara bergantian, sehingga pengeringan yang dilakukan oleh alat ini lebih merata dan lebih banyak mengalami penyusutan serta mempercepat waktu pengeringan.Invalid source specified. Penelitian ini bertujuan untuk mengetahui besar kontribusi dari kecepatan, suhu, dan waktu terhadap hasil pengeringan dan mengetahui pengaruh variasi sirip pada sistem pengeringan. Peneletian ini menggunakan metode eksperimen langsung. Setiap hasil pengujian lada memiliki kadar air yang berbeda. Kadar air yang sesuai dengan SNI mutu lada putih yang telah ditentukan terdapat pada variasi waktu pengeringan 75-90 menit dengan suhu 55℃-60℃.Sedangkan, kadar air tertinggi atau tidak sesuai dengan standar mutu terdapat pada variasi waktu pengeringan 60-90 menit pada suhu 45℃-55℃ dan pada waktu pengeringan 60 menit pada suhu 55℃-60℃. Waktu dan suhu proses pengeringan sangat berpengaruh pada laju pengeringan lada putih. Laju pengeringan tertinggi terjadi pada waktu 60 menit dengan suhu pengeringan 45℃-50℃ dengan menghasilkan perpindahan massa uap air sebesar 5 g/m.
PENGARUH VARIASI STATOR TURBO BLADE TERHADAP KEKUATAN DORONG TURBOJET DRIVE PRODUK 3D PRINTING MATERIAL ST-PLA Nori Farandi Nori; Dedy Ramdhani Harahap; Hasdiansah Hasdiansah
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 1 (2021): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Turbojet drive or water jet as we know today that turbojet drive technology is a marine system that produces water jets for propulsion. However, the thing that must be considered is the thrust generated by the propeller because of a problem that is often discussed. The purpose of this study was to determinet the effect of variations of the turbo stator on the trust of the tubojet drive using the ST-PLA 3D printing material.in this study, the turbojet drive design method uses the concept of an outboard engine with the help of tools and hanging scales to get the value of the thrust so that it can be  analyzed later. This study compares 3 forms of turbo stator, namely 4 Blade, 6 Blade and 8 Blade, based on the results of this study it was found that the variation of the turbo stator has a major influence on the thrust of the turbojet drive with 3D printing product ST-PLA material. The test results show that the 8-blade turbo stator has the highest thrust with an average value of 44.145 N and the 4-blade turbo stator has the lowest thurst with an average value of 24.525 N. Besides, this data can also be used as a reference for development of a turbojet drive according to the desired speed with the selection of a turbo stator variation that has been tested.
PENGARUH CHAMBER PADA MESIN 3D PRINTING FDM TEHADAP HASIL PRODUK DENGAN MENGGUNAKAN FILAMEN ABS zailani hamzah; Pristiansyah Pristiansyah; Dedy Ramdhani
Prosiding Seminar Nasional Inovasi Teknologi Terapan Vol. 2 No. 01 (2022): Prosiding Seminar Nasional Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

3D printing technology using the Fused Deposition Modeling (FDM) system is one of the manufacturing processes currently being developed. The rapid prototyping process makes it easier for academics in research. Acrylonitrile Butadiene Styrene (ABS) filament material is the type of material used in this research. The purpose of this study was to determine the effect of the use of the chamber on the 3D printing machine DIY (Do It Yourself) FDM type Cartesian ender model on the quality of product dimensional accuracy results. The method used in this research is experimental by using a chamber on a 3D printing machine and using process parameters. The results of the research by testing and measuring, it is found that the chamber affects the accuracy of the product dimensions with the heat bed temperature (80 ℃), nozzle temperature (230 ℃), print speed (40 mm/s), infill density (40%) and the use of layer thickness. (0.20 mm) shows a significant result of product dimensional accuracy.
Optimalisasi Kinerja Archimedes Screw Menggunakan Sistem Transmisi Terhadap Output Daya (Watt) Fikri Fikri; Dedy Ramdhani; Hasdiansah Hasdiansah
Jurnal Inovasi Teknologi Terapan Vol. 1 No. 2 (2023): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Water energy sources at low head and discharge can be utilized as a generator of electrical energy, one of which is by using the Archimedes screw turbine, the Screw turbine is used in Pico Hydro Power Plants (PLPTH) as a small-scale power plant by utilizing water energy from river flow. The purpose of this research is to optimize the performance of the Archimedes screw turbine Pico Hydro Power Plant so as to produce a better power output. In this study the authors designed an Archimedes screw turbine model with a screw angle of 28°, 5 blade type screw, and 40° turbine tilt. This study focuses on a transmission system using a belt and pulley ratio of 1:3, with two levels of transmission, and a turbine tilt angle of 40°. The method used in this study is the experimental method. As a result, after trials were carried out on a stream located in the Sungailiat Archipelago Fishing Port area, the highest turbine rotation value was 146 rpm and generator rotation 756 rpm, resulting in a power output of 8 watts within 45 minutes of the trial period in the field. This means that after modifying the Archimedes screw turbine with the transmission system and the turbine tilt angle of 40°, the resulting power output increases.
Co-Authors Abu Husain, Nurul Akmar Akmar Adhi Budiono Agus Susanta Bambang Supriyo Bambang Supriyo, Bambang Charlotha Charlotha Feriadi, Indra Fikri Fikri Hasdiansah, Hasdiansah Indra Dwisaputra Nofriyani Nofriyani Nori Farandi Nori Nurul Akmar Akmar Abu Husain Pristiansyah Pristiansyah Sugeng Ariyono, Sugeng Syahaji Watama Syahrul Khafizam WEI-CHIN CHANG zailani hamzah