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All Journal International Journal of Electrical and Computer Engineering SMARTek MEKTEK Foristek ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika PROtek : Jurnal Ilmiah Teknik Elektro KACANEGARA Jurnal Pengabdian pada Masyarakat Abditani : Jurnal Pengabdian Masyarakat INTEK: Jurnal Penelitian Jurnal Pengabdian Kepada Masyarakat (Mediteg) Jurnal Pengabdian Masyarakat Borneo JE-Unisla EPI International Journal of Engineering Journal of Applied Engineering and Technological Science (JAETS) Indonesian Journal of Electrical Engineering and Computer Science Bomba: Jurnal Pembangunan Daerah
Yuli Asmi Rahman
Jurusan Teknik Elektro, Fakultas Teknik,Universitas Tadulako
Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Transportation Veterinary Other

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APLIKASI KARAKTERISTIK PENYEARAH SATU FASE TERKENDALI PULSE WIDTH MODULATION (PWM) PADA BEBAN RESISTIF Rahman, Yuli Asmi
SMARTek Vol 9, No 1 (2011)
Publisher : SMARTek

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Abstract

Penyearah adalah alat untuk mengubah tegangan bolak balik menjadi tegangan searah.Penerapan penggunaan rectifier dalam industri secara luas sebagai Uninterruptible Power Supply(UPS), pengaturan tegangan konstan, penggerak kecepatan motor, perbaikan faktor daya. Satuphasa terkendali penyearah menggunakan metode Pulse Width Modulation (PWM) adalah salahsatu jenis penyearah yang tegangan keluaran yang dikendalikan dengan perbaikan faktor daya.Eksperimen dilakukan dalam dua kasus variable yaitu, pada beban konstan dengan teganganinput variatif dan variabel beban dengan tegangan masukan konstan.Kedua penelitian menunjukkan bahwa satu phasa terkendali penyearah menggunakan metodePulse Width Modulation (PWM) menjaga tegangan sumber dan ouput akan konstan efektifmeskipun beban variatif
EFEK PENGGUNAAN SCR MOTOR CONTROLLER UNTUK PENINGKATAN EFISIENSI PADA MOTOR INDUKSI TIGA FASA Rahman, Yuli Asmi; Nugraha, Deny Wiria
MEKTEK Vol 8, No 1 (2006)
Publisher : MEKTEK

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Abstract

AC Induction motors are sized for maximum load and are operated at a constant full speed, because they are supplied with power from AC lined at a fixed-sinusoidal voltage and fixed frequency. However, load of motor does not always same at many conditions but the input voltage and power of motor is fixed. Of course, it will influence the efficiency of the motor. One method to improve efficiency of the motor is varying the voltage as loaded its and called Motor Controlled. Motor Controlled is AC Drive that using SCR (Silicon Controlled Rectifier) as the output voltage controller by controlling the firing angle. By employing SCR Motor Controller that adjust the voltage of the motor offers advantageous to improve efficiency of motor and potential for significant energy savings.
SISTEM DETEKSI DINI BANJIR BERBASIS SENSOR FLOAT MAGNETIC LEVEL GAUGE -, Fahrul, Miranti, Ambo Asse; Rahman, Yuli Asmi
FORISTEK : Forum Teknik Elektro dan Teknologi Informasi Vol 3, No 2 (2013)
Publisher : FORISTEK : Forum Teknik Elektro dan Teknologi Informasi

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Abstract

Central Sulawesi has tropical climate conditions with interconnected rivers caused each of it can experience the impact of the sudden rise of water levels if there is a heavy rainfall in upstream areas which is commonly called “a sent flood”. Therefore, it is needed an early detector flood tool that works based on the height of river water level so that the impact of floods can be minimized. Early detector flood tool can function automatically by giving early warning when water levels reach a certain limit. The detector of height levels of river streams is designed using float magnetic level gauge method. This height level of river streams detector is able to provide information in real time based on the height level of river streams by giving information in the form of warning light indicator and siren alarm as alert and danger sign. Key words: detector, early, flood, float, magnetic.
EVALUASI SETTING DISTANCE RELAY PADA SUTT 150 KV ANTARA GI PAMONA – GI SIDERA Adrianto, J; Sarjan, Muhammad; Rahman, Yuli Asmi
FORISTEK : Forum Teknik Elektro dan Teknologi Informasi Vol 6, No 1 (2016)
Publisher : FORISTEK : Forum Teknik Elektro dan Teknologi Informasi

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Abstract

A short circuit is a common fault of overhead lines. In 2015, short circuit caused by surge lighting and fallen trees, occurred four times in transmission line connected PamonaSiderasubstation. In securing transmission line, distance relay should be applied as the primery protection. However, incorrect setting of relay may readily lead to relay failure to protect the line. Therefore, evaluation of relay setting is crucial. The purpose of this paper is to evaluate the setting of distance relay that was installed at Pamona and Sidera substation. Furthermore, calculation of curent fault and impedance of short circuit was done by intervering fault to the line connected Pamona and Sidera substation in matlab. The method used is simulation using matlab application. The result shows that the highest short circuit current obtained at 25% of the length of Pamona-Sidera transmission line, 6203.47A. The smallest short circuit current was 1255,86A, occurred at 100% of the Keyword : Short Circuit, Distance Relay, Transmission line
EVALUASI JARINGAN TEGANGAN MENENGAH SISTEM KELISTRIKAN KAMPUS UNIVERSITAS TADULAKO MENGGUNAKAN ETAP 7.5.0 Santiyasa, I Nyoman; Sarjan, Muhammad; Rahman, Yuli Asmi
FORISTEK : Forum Teknik Elektro dan Teknologi Informasi Vol 4, No 2 (2014)
Publisher : FORISTEK : Forum Teknik Elektro dan Teknologi Informasi

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Abstract

Electricity is a secondary energy form that is generated, transmitted and distributed for all kinds of purposes. Tadulako University Campus an electricity consumer with considerable power and continue their development rapidly. Because of the construction, the electrical load is also increasing, the medium-voltage network as one of the components of the power system needs to be evaluated in order to serve the load capacity continuously. Electrical power is supplied from distribution transformers to user have voltage loss and power losses. Because the distribution network has resistance, inductance, and capacitance. The energy lost already appeared from the generation system. This study was conducted by analyzing model of the single line diagram with input medium voltage-network Tadulako University campus data in ETAP 7.5.0 application. From the analysis, there were losses in the medium voltage network Tadulako University Campus at 1.358% with 0.39% voltage drop at the existing load. Keywords : Electricity, Losses, Drop Voltage, Medium Voltage Networks, ETAP
WATAK HARMONIK PADA INVERTER TIGA FASA TAK BERBEBAN Sunanda, Wahri; Rahman, Yuli Asmi
FORISTEK : Forum Teknik Elektro dan Teknologi Informasi Vol 1, No 1 (2011)
Publisher : FORISTEK : Forum Teknik Elektro dan Teknologi Informasi

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Abstract

AbstractHarmonic is one of sinusoidal components, one wave period from whichhaving multiple frequency of its fundamental frequency one, leading toelectrical power quality problems. Harmonic distortion in term of voltageand current ones, generally is due to non linier impedance. Inverter is one ofexample of it. There are some items that will be measured. There are value ofharmonic at source and value of voltage and current harmonic when inverter does not have any load. IEEE Standard of 5191992 as a reference in determining maximum limitation voltage and current harmonics. The result of the tests were showed that voltage harmonic distortion at inverter did not exceed the IEEE 5191992 maximum limitation of 5%. While current harmonic distortion had exceed the maximum limitation of the IEEE 5191992. The highest results were exceeding 56,55 % when inverter does not have any load.Keywords: Voltage, Current, Harmonic Distortion, Inverter.
PELUANG HEMAT ENERGI LISTRIK PADA GARDU FISIP KAMPUS UNIVERSITAS TADULAKO Siregar, Restu Ary Winata; E, Darmawan; Mukhlis, Baso; Rahman, Yuli Asmi
FORISTEK : Forum Teknik Elektro dan Teknologi Informasi Vol 6, No 1 (2016)
Publisher : FORISTEK : Forum Teknik Elektro dan Teknologi Informasi

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Abstract

The use of electrical energy in University is an absolute and unavoidable. Based on data obtained, every year Tadulako University experienced a high increase in electrical energy consumption. The electricity bills of Tadulako University based on data 8 months from January to August 2015 reached Rp.2.567.411.878 that is in average of payment per month of Tadulako University is Rp.322.051.485.At the substation of FISIP electricity usage in January through August 2015 was highest in June reaching 61.750 kWh to the cost of electricity bill as big as Rp.55.575.000. Electric energy audit begins with the historical data collection of electricity biil in the last three years such as : the substation of FISIP on January to August, the data load of electrical equipment, and the spacious rooms supplied. The intensity of energy consumption and the energy-saving opportunities were counted from each supplied rooms of substation FISIP. The result of the calculation of the intensity of energy consumption in detail can be seen throught 160 total rooms if the energy-saving opportunity of 49 rooms is implemented. Therefore, Tadulako University can save the cost of electricity by Rp.30.140.900,73 per month. Keywords : Electrical Energy Audit, Energy Consumption Intensity, Energy Saving Opportunities, Efficiency, Substation FISIP, Tadulako University
APLIKASI FILTER PASIF SEBAGAI PEREDUKSI HARMONIK PADA INVERTER TIGA FASE Sunanda, Wahri; Rahman, Yuli Asmi
FORISTEK : Forum Teknik Elektro dan Teknologi Informasi Vol 2, No 1 (2012)
Publisher : FORISTEK : Forum Teknik Elektro dan Teknologi Informasi

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Abstract

Harmonic is one of sinusoidal components, one wave period from which having multiple frequency of its fundamental frequency one, leading to electrical power quality problems. Harmonic distortion in term of voltage and current ones, generally is due to non linier impedance. Inverter is one of example of it. There are some items that will be measured. There are value of harmonic at  source and value of voltage and current harmonic when inverter does not have any load. IEEE Standard of 519-1992 as a reference in determining maximum limitation voltage and current harmonics. The result of the tests were showed that voltage harmonic distortion at inverter did not exceed the IEEE 519-1992 maximum limitation of 5%. While current harmonic distortion had exceed the maximum limitation of the IEEE 519-1992. The highest results were exceeding 57,52 % when inverter does not have any load. After using passive filter that function for reducing the value of harmonic,  the total harmonic distortion (THD) current w only 6,837%  when inverter does not have any load.   Keywords : Voltage, Current, Harmonic Distortion, Passive Filter.
Temperature Control of Soft Drinks on Vehicle with Portable Storage Thermoelectric Cooler Basri Basri; Mustofa Mustofa; Daud Patabang; Yuli Asmi Rahman; Wahyu Haryadi Piarah
EPI International Journal of Engineering Vol 1 No 2 (2018): Volume 1 Number 2, August 2018 with Special Issue on Railway Engineering
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/epi-ije.082018.07

Abstract

This study aims to design a control system with fuzzy logic on a system of cooling the storage of soft drinks with thermoelectric coolers. This storage can be carried in a vehicle using a DC electric power from a photovoltaic solar cell mounted on the roof of the car. Under certain conditions the energy source of cigarette lighter in a car can replace the solar cells. The test results show that a temperature of 15oC can be reached within 30 minutes with fuzzy control, while without fuzzy control the time needed in 63 minutes, 30 minutes longer.
Optimum Investigation LED Bulbs Light as Photon Energy on Photovoltaic Panel Installed Inside Buildings Mustofa Mustofa; Anjar Asmara; Yuli Asmi Rahman; Tutang Muhtar Kamaludin; Hariyanto Hariyanto; Zuryati Djafar; Wahyu Hariyadi Piarah
EPI International Journal of Engineering Vol 4 No 2 (2021): Volume 4 Number 2, August 2021
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/10.25042/epi-ije.082021.02

Abstract

This study was conducted to obtain the angle of elevation of solar panels (PV) to harvest photon light energy sources from LED bulbs that are often used in residential homes or buildings. The PV tilt angles tested are 0, 15, 30 and 90º by placing a constant bulb in its position. The results of the observations show that a slope of 0º produces the highest PV electrical power, although it is not significant compared to the other 3 slope angles. The decrease in PV output power occurs when the slope angle increases. Optimum power of 16.93 Watt is obtained by using a Hannochs bulb at a power of 15 Watt with an angle of elevation of 0º. Furthermore, the power decreased to 16.33, 12.92, and 12.91 Watts at angles of 15, 30 and 90º, respectively. Further research is still needed by increasing the variation of bulb power above 15 Watts to validate the position of the PV panels on the walls of the building according to light source.
Co-Authors Adrianto, J Agus Siswanto Amaliah, Asma Amar Amar Ambo Asse Ambo Asse Miranti Fahrul - Aminuyati Andi Arham Adam Andi Chaerul Achsan, Andi Chaerul Andi Idhan Andi Rusdin Anjar Asmara Ardi Nugraha ARDI NUGRAHA, ARDI Ardiansyah Ardiansyah Ardias, Erwin Arham, Andi Ashad, Bayu Adrian Baso Mukhlis Basri Basri Basri Basri Dadang Kurnia Dadang Kurnia, Dadang Daud Patabang Deny Wiria Nugraha Diana Diana Din, Muhammad E, Darmawan Erwin Ardias Saputra Fahrul Fahrul Faisal Al-Habsyi Hanni Maksum Ardi Hariyanto Hariyanto Indrajaya, Muhammad Aristo Irwan Mahmudi Irwan Mahmudi Irwan Mahmudi Iskandar Iskandar Iskandar Iskandar JAKARIYA - - Jakariya, Jakariya Khairil Anwar Khairil Anwar Khairil Anwar Lukman, Musfirah Putri M Rusdi Maharani, Dhyvia Mardjudo, Ahsan Maryantho Masarrang Medi, Gery Mery Subito Miranty Miranty Mucharomah, Nurul Maghfiroh Muchsin Muchsin Muhammad Sarjan Muhammad Sarjan Muhira Dzar Faraby, Muhira Dzar Mustika Mustika Mustofa Mustofa Mustofa Mustofa Nasution, Annio Indah Lestari Nurhani Amin PAMUSO, MARLIN Putra, Wisnu Rahmat Dwi Rachmawati, Sitti Ratih Mar'atus Sholihah Ratih Mar’atus Shalihah Rizana Fauzi, Rizana Rizkhi Rizkhi Rustan Hatib Samnur . Santiyasa, I Nyoman setiawan, Dibyo Setiyawan Setiawan Sirad, Mochammad Apriyadi Hadi Siregar, Restu Ary Winata Sitti Nuradha Wati S sofyan sofyan Sonita, Anisya Sundun Sada Maripi Tan Suryani Sollu Thaha, Sarma Vauzia, Farrah Wahri Sunanda Wahyu H. Piarah Yusnaini Arifin Zuryati Djafar