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Studi Kasus Kelayakan Penerapan Sistem Hybrid Building Applied Photovoltaics (BAPV)-PLN pada Atap Gedung Politeknik Aceh Rachmad Ikhsan; Ira Devi Sara; Rakhmad Syafutra Lubis
Jurnal Rekayasa Elektrika Vol 13, No 1 (2017)
Publisher : Universitas Syiah Kuala

With the undeveloped BAPV(Building Applied Photovoltaics) at Office Building and Public Facilities, Caused the high price of solar modules and the lack the economic study on the use of solar modules that housed in the Banda Aceh region. Furthermore, the price of solar modules is expensive, so people think it will cost so much funds to building a BAPV’s system. These problems could be overcomed if the existing technical studies and economic studies of the application of the BAPV’s system. This study aims to assess the application of the BAPV’s system on institutions building in terms of technical and economic value, in this case the building that is used as the study object is the Polytechnic Aceh’s Building. The method that used in the technical studies are theoretical calculations and simulations using helioscope software, while the methods used for economic studies is using the methods of cost-benefit analysis (cost benefit analysis). The method used to find the NPV (Net Present Value), PP (Payback Period), IRR (Internal Rate of Return), and BCR (Benefit Cost Ratio). If the average value of solar radiation reaching 4.79 kWh / m2 / day and the average daily energy requirement is 592 kWh, the energy generated from BAPV-PLN hybrid system on the roof of the object building will reach the amount of 237 MWh/year with the capacity charge controller used is 7490 A and the capacity of the battery used is 64.487 Ah. Panel tilt angle used is 25o and the type of panel used is Monocrystalline manifold. From the economic value will obtained NPV value of Rp. 20.022.106.937, PP during 5,2 years, IRR of 36% and 3,49 of BCR. Based on the evaluation results of the feasibility study, the project of hybrid BAPV-PLN’s system on the roof of the Polytechnic Aceh’s building can be realized, because its already meet the criteria of the feasibility study to make the systems get established in real term.

Studi Kasus Kelayakan Penerapan Sistem Hybrid Building Applied Photovoltaics (BAPV)-PLN pada Atap Gedung Politeknik Aceh Rachmad Ikhsan; Ira Devi Sara; Rakhmad Syafutra Lubis
Jurnal Rekayasa Elektrika Vol 13, No 1 (2017)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v13i1.6071

With the undeveloped BAPV(Building Applied Photovoltaics) at Office Building and Public Facilities, Caused the high price of solar modules and the lack the economic study on the use of solar modules that housed in the Banda Aceh region. Furthermore, the price of solar modules is expensive, so people think it will cost so much funds to building a BAPV’s system. These problems could be overcomed if the existing technical studies and economic studies of the application of the BAPV’s system. This study aims to assess the application of the BAPV’s system on institutions building in terms of technical and economic value, in this case the building that is used as the study object is the Polytechnic Aceh’s Building. The method that used in the technical studies are theoretical calculations and simulations using helioscope software, while the methods used for economic studies is using the methods of cost-benefit analysis (cost benefit analysis). The method used to find the NPV (Net Present Value), PP (Payback Period), IRR (Internal Rate of Return), and BCR (Benefit Cost Ratio). If the average value of solar radiation reaching 4.79 kWh / m2 / day and the average daily energy requirement is 592 kWh, the energy generated from BAPV-PLN hybrid system on the roof of the object building will reach the amount of 237 MWh/year with the capacity charge controller used is 7490 A and the capacity of the battery used is 64.487 Ah. Panel tilt angle used is 25o and the type of panel used is Monocrystalline manifold. From the economic value will obtained NPV value of Rp. 20.022.106.937, PP during 5,2 years, IRR of 36% and 3,49 of BCR. Based on the evaluation results of the feasibility study, the project of hybrid BAPV-PLN’s system on the roof of the Polytechnic Aceh’s building can be realized, because its already meet the criteria of the feasibility study to make the systems get established in real term.

Design and implementation of a state feedback controller for enhanced speed stability of permanent magnet DC motors under load variations Mahdi Syukri; Rakhmad Syafutra Lubis; Melinda Melinda; Muhammad Hakkan Syukur; Iskandar Hasanuddin; Muhammad Irwanto
Jurnal Polimesin Vol 24, No 2 (2026): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i2.8379

This study presents the design and simulation of a State Feedback Controller (SFC) for speed regulation of a Permanent-Magnet DC (PMDC) motor using a state-space modeling approach. The objective is to achieve stable and accurate speed control under dynamic load disturbances that typically degrade the performance of conventional open-loop systems. The Direct Current (DC) motor is modeled in state-space form, with armature current and angular speed selected as the main system states. Controller gains are designed using the pole placement method to ensure fast response and improved stability. The proposed SFC is evaluated through MATLAB®/Simulink® simulations by examining motor speed, armature current, and input voltage responses under step-load variations. Simulation results show that the SFC maintains the motor speed at the reference value of 3,430 rpm even during sudden load increases, whereas the uncontrolled motor experiences significant speed drops and oscillations. Performance analysis confirms notable improvements in transient response. The rise time is reduced from 1.1864 s to 0.4220 s, and the settling time decreases from 2.1132 s to 0.7517 s, indicating faster and more stable system behavior. In addition, smoother current transitions and more efficient voltage regulation are achieved compared to the open-loop configuration. Overall, the results demonstrate that state-space control using pole placement provides a robust and responsive alternative to conventional PID controllers for DC motor speed control under load disturbances. Future work will focus on experimental validation and the exploration of advanced control strategies such as Linear Quadratic Regulation and adaptive control.

Pembinaan Pemasangan Pembangkit Listrik Tenaga Matahari bagi Santri Dayah Mini Banda Aceh Rakhmad Syafutra Lubis; Suriadi Suriadi; Mahdi Syukri; Ramdhan Halid Siregar; Masri Masri; Yuwaldi Away
AJAD : Jurnal Pengabdian kepada Masyarakat Vol. 5 No. 3 (2025): DECEMBER 2025
Publisher : Divisi Riset, Lembaga Mitra Solusi Teknologi Informasi (L-MSTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59431/ajad.v5i3.684

Solar energy is a renewable energy source that has become increasingly popular in recent years as an electricity source. However, the availability of trained personnel to install rooftop solar panels is limited. This community service program was conducted to provide training in residential solar system installation for students from Dayah Mini Banda Aceh. The training took place in the Power Electronics and Renewable Energy Laboratory at Universitas Syiah Kuala, where theoretical training on renewable energy was combined with demonstrations of equipment and simulated installation practice. The modules included rail mounting, panel positioning, inverter connections, charge controller setup, and wiring in series and parallel. Students were guided by lecturers and assisted by engineering students who had already undergone training in this field. They exhibited great enthusiasm and completed all the stages of installation successfully. This program not only addresses the shortage of workers with such skills in the solar installation industry but also helps students from low-income families acquire these practical competencies that can lead to jobs or entrepreneurship within the ever-growing sector of renewable energy; thus reducing unemployment among their communities while supporting Indonesia's shift towards sustainable energy.

Pelatihan Pengenalan Mesin-Mesin Listrik bagi Masyarakat Seputaran Kampus USK Rakhmad Syafutra Lubis; Ramdhan Halid Siregar; Syukriyadin Syukriyadin; Alfisyahrin Alfisyahrin; Saifuddin Muhammad Jalil
Indonesia Berdampak: Jurnal Pengabdian kepada Masyarakat Vol. 2 No. 1 (2026): JANUARI-JUNI 2026
Publisher : Indo Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63822/qxxkm356

Electrical power is used not only for lighting but also for devices that can facilitate daily activities, such as washing machines, where this device drives a device called an electric motor. Electric machines are widely used in various places to help humans complete their work. Electric machines have many types and uses according to their type. The use of an electric machine is generally very frequent, therefore the possibility of damage due to age and condition is the main cause. To extend the life of an electric machine, maintenance is necessary, and if damage occurs, it can usually be repaired so that the cost of use is cheaper when compared to buying a new electric machine as a replacement. The most common damage is in the windings of the electric machine. The windings are long conductor wires wrapped around the stator (the stationary part). This winding is where the rotating electric field will be generated which will affect the conductors in the rotor (the rotating part) so that it can rotate. This winding is the most important part of an electric machine or motor. When the electricity supply is disrupted, some people use a temporary power generator called a generator set (a generator that is driven by a combustion engine or what is called a genset). These two devices, motors and generators, are known as electrical machines. Therefore, the community service team felt the need to conduct training for several interested community members. This training, called Introduction to Electrical Machines, was conducted. By utilizing the skilled workforce already available within the Electrical and Computer Engineering Department, Faculty of Engineering, Unsyiah, including lecturers, students, and the laboratory, the training is expected to increase the number of skilled personnel in electrical machine maintenance and repair. This will, in turn, increase budget savings in the use of electric motors within the community.

Pelatihan Pemeliharaan dan Perbaikan Motor Listrik Rakhmad Syafutra Lubis; Ramdhan Halid Siregar; Syukriyadin Syukriyadin; Alfisyahrin Alfisyahrin; Saifuddin Muhammad Jalil
Indonesia Berdampak: Jurnal Pengabdian kepada Masyarakat Vol. 2 No. 2 (2026): JULI-DESEMBER
Publisher : Indo Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63822/qzxga020

Electric motors are widely used in various places to assist human work. Their intensive use makes damage due to age and operating conditions a common occurrence. The most frequent damage occurs in the motor windings, the most critical part that generates a rotating magnetic field. Repairing this damage requires rewinding the coils with high precision, as errors can cause the motor to malfunction. To extend the motor's service life and reduce repair costs, skilled personnel are needed in the community who can perform electric motor maintenance and repair. Therefore, the community service team conducted training on motor winding rewinding for interested community members. This training utilized experts from the Department of Electrical and Computer Engineering, Faculty of Engineering, Syiah Kuala University, including lecturers, students, and laboratory staff. This activity aims to increase the number of skilled workers in electric motor maintenance and repair, particularly in rewinding coils, so that electric motors can function properly again and maintenance cost savings can be improved in the community. The results achieved showed a noticeable improvement in participants' understanding after the training, and participants were able to perform the motor winding rewinding practice under guidance.

Compensation of Voltage Sags Due to Short Circuits on Distribution Lines (Feeders) with Dynamic Voltage Restorer (DVR) Rakhmad Syafutra Lubis; Muhammad Iqbal Nasir Gade; Ramdhan Halid Siregar; Mahdi Syukri; Saifuddin Muhammad Jalil
Journal of Engineering and Science Vol. 5 No. 1 (2026): June
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jes.v5i1.418

Short circuit faults occur frequently on distribution lines. Such faults generate a fault current within a short interval and result in a momentary voltage drop, commonly known as a voltage sag. On a feeder, the short circuits that occur most often are single-phase-to-ground, two-phase, and three-phase faults. To determine the voltage sag on the line caused by a short circuit, it is necessary to analyze the short circuit fault current and voltage sag by assuming the fault point at 25%, 50%, 75%, and 100% of the total length of the BA 15 feeder. The voltage sag when a single-phase-to-ground short circuit occurs at 25%, 50%, 75%, and 100%, respectively, is 8663.68∠0° V, 5773.4∠0° V, 2886.87∠0° V, and 525.48∠0° V. When a two-phase short circuit occurs, the voltage sag is 19022.602∠0° V, 16637.035∠0° V, 12106.47∠0° V, and 11826.98∠0° V, while during a three-phase short circuit it is 5000∠-76.05° V, 10000∠-70.21° V, 15000∠67.05° V, and 18231.99∠24.29° V. This voltage sag disturbance can be corrected using a DVR, which injects the voltage required to restore normal conditions.

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