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All Journal Jurnal Teknik Kimia USU Jurnal Pengabdian Mandiri ELPOSYS: Jurnal Sistem Kelistrikan Serambi Engineering
Muhammad Fahmi Hakim
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Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Social Sciences Other

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Audit Energi dan Rekomendasi Penghematan Energi Listrik di Gedung Rumah Sakit Muhammad Fahmi Hakim; Ahmad Hermawan; Fandi Kurniawan; Kumala Mahda Habsari
Elposys: Jurnal Sistem Kelistrikan Vol. 10 No. 2 (2023): ELPOSYS vol. 10 no. 2 (2023)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v10i2.2522

Abstract

The actions for electricity consumption more efficiently is reducing the amount of electricity consumption of renewable and non renewable energy for human living sustainability or we can called energy conservation. Energy audit purposed to the energy utilization evaluation progress, is still infrequently applied in Indonesia, especially in huge building. The analyzing result of A building in the Dr. Radjiman Wediodiningrat Asylum, the first value audit of Energy Use Intensity (EUI) is 21,944 kwh/m2/year it was include the criteria of efficient. This EUI value is below EUI research that was issued by ASEAN-USAID in 1992 and the EUI value average of hospital in Korea, while detailed audit obtained energy value of EUI is 23,213 kWh/m2/year is included to the criteria of efficient. The THDi value in electricity system is IR= 33,2%, IS=24,48%, IT= 34,85% and IN=122,96%, the THDi value is not complied with IEEE 519-2014 permission which is the value is ISC/IL> 1000 has restraint value by 20%. Whereas the THDv value in electricity system is VR-S= 2,04%, VS-T= 2,11%, VT-R= 1,97%, VR-N= 3,83%, VS-N= 3,69%, VT-N= 3,73% and VL-L= 2,04% and VL-N= 3,75%, the value of THDv is complied the permissiod by IEEE 519-2014 with Voltage system of identification by 0,4 kV, therefore the limit value of THDV which permitted is 8%.
Perencanaan Control Valve Pada Head Tank PLTA Tulungagung Menggunakan PLC Hidayat, Mohammad Noor; Nursal, Elan Causa; Ronilaya, Ferdian; Muhammad Fahmi Hakim
Elposys: Jurnal Sistem Kelistrikan Vol. 10 No. 2 (2023): ELPOSYS vol. 10 no. 2 (2023)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v10i2.2676

Abstract

Head Tank of the Tulungagung Hydro Electric Power Plan of PT PJBUP Brantas still has a manual control valve which consists of  a gate valve and a pair of  float valves. There are some problems when the pipe of the float valve is blocked by cediment and debris, it could affect the cooling water system and make damage to the power plant. In this research, there would build a plan of the automatic control valve of the Tulungagung HEPP. PLC Siemens Simatic Step 7 was used as a control base on a SCADA software Wonderware Intouch version 10.0.0. In this modification plan, a pair of float valve changed over solenoid valve and manual gate valve change over motorized valve. For the water level that would be ultrasonic sensor SICK UM 30 as a input for the power meter Omron Procces Meter K3MA-J. The reliability of this modification are excellence and complete for the auto/manual control even for the long distance one. Moreover this modification also has excellence safety.
Analisis Kestabilan Transien Akibat Penambahan Generator di Pabrik Gula Duanaputri, Rohmanita; Muhammad Fahmi Hakim; Reyhan Aulia Rachman; Nuha Nadhiroh
Elposys: Jurnal Sistem Kelistrikan Vol. 10 No. 2 (2023): ELPOSYS vol. 10 no. 2 (2023)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v10i2.3064

Abstract

The Assembagoes sugar factory has a production capacity of 3000 TCD and was revitalized in 2015, increasing the capacity to 6000 TCD. With the increase in production capacity, the supply of electrical energy, which had previously only come from one generator unit, was supplemented with one new 13 MW generator unit, increasing the total generation capacity to 23 MW. With this addition, the operation pattern of the electrical system changes, and the problem of system stability becomes one of the primary concerns that must be analyzed with improvements to the Assembaggoes sugar factory's electrical system. The goal of this research is to determine the system's frequency and voltage response when a brief stability disturbance occurs.
Rancang Bangun Mesin Sangrai Sampel Biji Kopi Elektrik Kapasitas 250 Gram Heri Sungkowo; Rahman Azis Prasojo; Dinda Ayu Amalia; Rahmad Dwi Pramudya; Muhammad Fahmi Hakim; Bakti Indra Kurniawan; Sukamdi
Elposys: Jurnal Sistem Kelistrikan Vol. 10 No. 3 (2023): ELPOSYS vol. 10 no. 3 (2023)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v10i3.3942

Abstract

Coffee is one of the beverages with a distinct flavor profile. Coffee production continues to grow in response to community demands. A wide variety of coffee flavors have been developed, necessitating an effective coffee processing method, such as roasting. While many coffee production processes employ roasting machines with high capacities, smaller industries may incur losses when using such machines due to their production needs, which involve creating new coffee flavor samples. To address these challenges, a solution is proposed: the creation of a drum-based coffee bean sample roasting machine that utilizes the convection method. The machine manufacturing process involves calculating the drum capacity, heater specifications, motor rotation, and air flow. A 2000 Watt heater is chosen, accompanied by a maximum drum capacity of 250 grams. The driving motor is a 12 V DC motor. The combined power of the motor components totals 1520 Watts, and the overall heating capacity can achieve temperatures of up to 300ºC. Performance testing of the roasting machine is conducted under conditions where all components are functioning correctly. The final roasting results exhibit even distribution, with a preheating temperature range of 190-200ºC for approximately 15 minutes roasting time.
Audit Dan Peluang Penghematan Energi Listrik CV Tirta Windu Agung 3 Probolinggo Duanaputri, Rohmanita; Muhammad Fahmi Hakim; Ahmad Jamaruddin; Tresna Umar Syamsuri
Elposys: Jurnal Sistem Kelistrikan Vol. 11 No. 1 (2024): ELPOSYS vol. 11 no. 1 (2024)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v11i1.4875

Abstract

The use of electrical energy in the building and industrial sectors is very important, especially the use and allocation of funds spent is quite large. So it is necessary to use energy as efficiently as possible. So there is a need for an energy audit to determine the level of electrical energy consumption used, where the results will be compared with predetermined standards. This research was carried out at CV Tirta Windu Agung 3 using a PM5100 and lux meter. From initial audit calculations, the IKE value was found to be 13.42 kWh/m2/year. This IKE value is the total of the buildings and ponds. The IKE value still includes very efficient criteria. Based on the results of detailed audit calculations, the value obtained before improvement was 2.23 kWh/m2/year. The IKE value still includes the criteria for being very efficient or meeting standards. After improvements it became 1.65 kWh/m2/year. Energy saving opportunities are available in indoor and outdoor lighting systems by replacing CFL (compact fluorescent lamp) lamps with Philips LED lamps. Based on calculations, the savings in electrical energy costs are IDR 41,736/day, resulting in savings of IDR 15,233,640/year. Based on the Isc/IL calculation above, it can be seen that the Isc/IL value is 165.4. According to the IEEE 519-2014 standard, the ISC IL value in the range >1000 has a permissible THDi value limit of 15%. The nominal voltage used is 0.4 kV, so the permitted THDv is 8%. Based on table 3.9 THDv and THDi under standard conditions.
Kinerja Inverter 500 W untuk PLTS Skala Kecil Slamet Nurhadi; Muhammad Fahmi Hakim; Ferdian Ronilaya; Sukamdi; Rahmania Putri Yulissa
Elposys: Jurnal Sistem Kelistrikan Vol. 11 No. 1 (2024): ELPOSYS vol. 11 no. 1 (2024)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v11i1.5015

Abstract

At Electrical Engineering Department of Politeknik Negeri Malang, there is an EBT learning module in the form of solar panel with small capacity, namely 80 Watts. The only load that can be supplied is DC load because there isn’t installed inverter. Therefore, it is necessary to determine the inverter specifications to be installed in small-scale solar system. This research aims to determine the specifications and test the performance of a 500 W inverter integrated with a 50 Wp solar system. Also analyze power quality parameters and efficiency when connected to various load. The test method is no-load and load testing with the parameters measured including current, voltage, power, frequency and THD. Analysis was also carried out on the correlation between efficiency and loading and inverter pins with THDV and THDI. In the no-load test, the inverter output voltage waveform was obtained as a pure sine wave with a frequency of 50.10 Hz. In testing the LED and LHE loads, it was found that the inverter was good for use when the load was 50-80% of its capacity. The lowest THDV value is at a Pin value of 26 W, namely a THDV value of 0.009%. The highest THDV on the Pin is 130 W with THDV value of 1.9%. The lowest THDI value is at Pin 9.75 W, namely 27.6%. The highest THDI value on the 130 W Pin is 80.9%. The THD limit is still within the IEEE standard limit, namely 5% - 10%.
Perencanaan dan Evaluasi Sistem Penyulang Ganda Sebagai Backup Power Supply PT. X Muhammad Fahmi Hakim; Ahmad Hermawan; Habib Priyo Budianto; Yudistiro Yanuarianto
Elposys: Jurnal Sistem Kelistrikan Vol. 11 No. 2 (2024): ELPOSYS vol. 11 no. 2 (2024)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v11i2.5155

Abstract

In order to meet the needs of electrical energy, PT X. receives electricity supply from PLN as the main source while the generator with a total capacity of 2.228,5 KVA as a backup electricity supply. PT X plans to procure a double feeder as a backup power supply to replace the generator set in the hope of getting a more economical backup power supply. So, the purpose of this study are analyzing the planning and technical calculations for the construction of a premium feeder, analyzing the comparisono f the use of generator setting with double feeder from economic point of view, and analyzing the comparison of the efficiency of using generator setting with the use double feeder. The method used in this study was the IRR (Internal Rate of Return) method to determine the value of the rate of return on investment while the SAIDI – SAIFI data was used to determine the reability of the feeder. The result of this research is the double feeder using MVTIC type construction. For Rp/kWh, the use of premium service, namely B3/TM customers is Rp. 1.162,78 per kWh and B2/TM Rp. 1.574,7 per kWh, while Rp/kWh generator setting is Rp. 4.003 per kWh. Meanwhile the double feeder IRR values is 44% and the generator setting is 24%. So, it is more efficient to use PLN premium service.
Kontrol Motor Berbasis PID untuk Pompa Air di Miniatur Rumah Kaca Himawan, Helmy Mukti; Mustikasari, Vita Ria; Muhammad Fahmi Hakim
Elposys: Jurnal Sistem Kelistrikan Vol. 11 No. 2 (2024): ELPOSYS vol. 11 no. 2 (2024)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v11i2.5339

Abstract

Greenhouses are crucial in agriculture for enhancing crop yields by providing controlled environmental conditions. Efficient water management is a key challenge in conventional greenhouse systems, often leading to water wastage due to unmeasured soil moisture levels. This research aimed to design and implement a PID control system for water pumps in a miniature greenhouse to optimize water usage and maintain stable soil moisture and temperature levels. The methodology involved integrating PID control with sensors to monitor and adjust the water pump operation based on real-time soil moisture and temperature data. The study found that the PID-controlled system reduced the time to reach steady-state conditions from 650 ms to 600 ms, with no overshoot compared to systems without control. Additionally, the error in the PID system ranged from 0.89% to 2.32%. These findings suggest that PID control significantly enhances the efficiency and effectiveness of water usage in greenhouses, contributing to better crop management and resource conservation. The implications of this research are substantial for agricultural practices, as it demonstrates a viable solution for improving irrigation precision and overall greenhouse management.
JUDUL PEMBUATAN ALAT PERAGA INSTALASI SMART HOME SYSTEM BERBASIS ANDROID SEBAGAI MEDIA PEMBELAJARAN SANTRI PONDOK PESANTREN SUNAN KALIJOGO JABUNG KAB. MALANG Budi Eko Prasetyo; Muhammad Fahmi Hakim; Priya Surya Harijanto; Rhezal Agung Ananto; Wijaya Kusuma
JURNAL PENGABDIAN MANDIRI Vol. 3 No. 10: Oktober 2024
Publisher : Bajang Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53625/jpm.v3i10.8776

Abstract

Pengabdian masyarakat ini bertujuan untuk memperkenalkan teknologi smart home system berbasis Android sebagai media pembelajaran kepada santri Pondok Pesantren Sunan Kalijogo, Jabung, Kabupaten Malang. Kegiatan ini dilatarbelakangi oleh kebutuhan peningkatan wawasan teknologi di kalangan santri untuk menghadapi era digital. Metode yang digunakan meliputi perancangan, pembuatan, dan instalasi alat peraga yang mudah dipahami dan dioperasikan. Program ini juga mencakup sesi simulasi penggunaan alat, di mana para santri diajarkan cara pengoperasian teknologi smart home seperti pengendalian lampu, CCTV, dan perangkat rumah pintar lainnya melalui aplikasi Android. Hasil pengabdian menunjukkan antusiasme tinggi dari peserta, dengan peningkatan keterampilan teknis terkait teknologi smart home. Alat peraga yang dirancang sederhana dan terjangkau, memungkinkan santri untuk memahami konsep Internet of Things (IoT) yang relevan dengan kebutuhan teknologi masa depan.
Evaluasi Metode Health Index Untuk Menentukan Prioritas Pemeliharaan Gardu Distribusi Galuh Prawestri Citra Handani; Rahman Azis Prasojo; Muhammad Fahmi Hakim; Muhammad Ridlo Zainal; Imron Ridzki; Bustani Hadi Wijaya
Elposys: Jurnal Sistem Kelistrikan Vol. 11 No. 3 (2024): ELPOSYS vol. 11 no. 3 (2024)
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/elposys.v11i3.6102

Abstract

Electricity is an essential energy source that plays a crucial role in human life. A key component of power distribution systems is the distribution substation. As distribution substations are in operation over time, their components experience aging, which can result in operational failures. This situation emphasizes the necessity for regular evaluations and diagnostics of distribution substations. Such assessments are crucial for identifying when equipment requires repair or replacement, ensuring that the system operates at maximum efficiency. By implementing a proactive maintenance strategy, utilities can mitigate risks, enhance reliability, and extend the lifespan of their infrastructure. The scoring matrix method is a technique for evaluating the condition of distribution substations. It combines results from field and laboratory tests to produce values that accurately reflect the substation's condition. The research focused on four distribution substations managed by PT PLN, classifying them into high, medium, and low categories based on their health index scores. The results show that, among the four distribution substations evaluated, substations A and C received health indices exceeding 80%, classifying them in the high category. It is therefore recommended that these substations continue operating normally while adhering to their scheduled periodic maintenance. In contrast, substation B received a health index between 50% and 80%, placing it in the medium category. While it can remain operational, it requires closer monitoring and maintenance at specific intervals to ensure reliability and prevent potential issues.
Co-Authors Ahmad Hermawan Ahmad Jamaruddin Amaral, Hanifiyah Darna Fidya Amimah, Anggi Ananto, Rhezal Agung Bakti Indra Kurniawan Budi Eko Prasetyo Bunga Nurkhalifah Bustani Hadi Wijaya David Kevin Diktiaz, Aggahra Dinda Ayu Amalia FANDI KURNIAWAN Fitri Yuliasari Galuh Prawestri Citra Handani Habib Priyo Budianto Helmy Mukti Himawan, Helmy Mukti Imron Ridzki Kumala Mahda Habsari Mohammad Noor Hidayat Muhammad Khairan Muhammad Ridlo Zainal Mustikasari, Vita Ria Nadhiroh, Nuha Nursal, Elan Causa Priya Surya Harijanto Putri Meylani, Cicilia Rachmat Sutjipto Rahmad Dwi Pramudya Rahman Azis Prasojo Rahman Azis Prasojo Rahmania Putri Yulissa Reyhan Aulia Rachman Rohmanita Duanaputri Ronilaya, Ferdian Sarah Dampang Satria Luthfi Hermawan Siti Nurhayati Siti Nurhayati Slamet Nurhadi Sukamdi Sungkowo, Heri Tarishah Setyowati Putri Tresna Umar Syamsuri Vera Pangni Fahriani Vera Pangni Vahriani Wijaya Kusuma Yudistiro Yanuarianto