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Preliminary Study on biogas production from POME by DBD plasma Ariadi Hazmi; Reni Desmiarti; Primas Emeraldi; Muhammad Imran Hamid; Edwardo Edwardo; Eka Putra Waldi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 15, No 2: June 2017
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v15i2.5574

A new technology to produce biogas using a dielectric barrier discharge (DBD) plasma system from palm oil mill effluent (POME) was investigated. The batch experiments were examined at applied voltages of 15, 20 and 25 kV. The results showed that the highest yields of hydrogen and methane were achieved at an applied voltage of 25 kV after 1 hour were 2.42 and 1.32 mL/mL of POME, respectively. The biogas was composed of 65% hydrogen and 35% methane. In order to make the results of this study applicable to biogas plants, the effects of flowrate and consumed energy are important parameters that should be further investigated in a future study.

TOMPEL (TONG SAMPAH PENGHASIL ENERGI LISTRIK) Bingesti Vegi Mayolan; Ade Chandra; Willy Azhar; Fitri Rahmatesa; Vebby Ola Handessa; Muhammad Imran Hamid
PAKAR Pendidikan Vol 15 No 2 (2017): Published in July 2017
Publisher : Pusat Pengembangan Ilmiah dan Penelitian Mahasiswa Universitas Negeri Padang

Plastic waste is the main problem that we face in Indonesia and still there is no appropriate way to solve it. Indonesia is ranked in number two as the country that throwing plastic waste to the sea. The common solution that mostly developed is by using recovery method, which is recycling the materials or compounds that exist in trash even it is physically, chemically, biologically or thermally. In this case it is needed a prototype for recovery system in changing trash into electrical energy. A prototype named TOMPEL (basket case generating electrical energy) has its function besides the place to put trashes but also has its function as converting tools to convert energy from plastic combustion into electrical energy with thermoelectricity system. The output is DC electricity that converts into AC electricity so it can be used after that. Based on experiment that has been done, the conclusion is effective plastic mass is 200 gram with outer voltage 10 volt by using glass wool as isolator. The voltage can recharge power in mobile phone. Moreover, solid waste is transformed into bricket.

Harmonics Analysis of Input Current of 3-Phase PWM Rectifier Alfin Prima Adjie; Muhammad Imran Hamid
Andalas Journal of Electrical and Electronic Engineering Technology Vol. 1 No. 1 (2021): May 2021
Publisher : Electrical Engineering Dept, Engineering Faculty, Universitas Andalas

Rectifier is a non-linier load that causes harmonic distortion in the power system. Pulse-width modulation (PWM) method is an effective method in pressing the magnitude of harmonics in a rectifier application, it provides an almost sinusoidal input current. However, the variation of loads that supplied by a rectifier cause the harmonics that arise can still beyond the applicable standard. The amount of harmonics in the operating range of a rectifier need to be identified to determine the filter on the input side. In this research article, 3-phase PWM rectifier was designed with hysteresis current control technique using PSCAD software simulation. Harmonic compensation was carried out by applying an active filter based on P-Q theory to reduce the harmonic distortion that occurs in the input current, thus giving a low total harmonic distortion (THD) value. Based on the simulation, 3-phase PWM rectifier operation starting at a power level of 150 kW, giving a THD value above 5-10% by the increasing the amount of load supplied by the rectifier. The application of active filter based on the P-Q theory is able to compensate harmonics in the input current wave with a THD value below 5% in the rectifier operating range.

Pengembangan Instrumen Pewarnaan Alam pada Studio Wastra Pinankabu Muhammad Ilhamdi Rusydi; Prima Fithri; Haznam Putra; Andi Pawawoi; Muhammad Imran Hamid; Riko Nofendra
Warta Pengabdian Andalas Vol 28 No 4 (2021)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.28.4.514-520.2021

One of the obstacles the Pinankabu studio faces is the lack of adequate equipment for processing silk threads and the currently available dyeing equipment for natural dyeing. Some equipment such as degumming pans, hangers, furnaces, and stoves are no longer suitable for needs. The properties of silk, which vary with demand and temperature, must be studied under appropriate conditions. Currently, partners can not confirm whether these conditions are met at work. The planned solution to this problem is the design of degumming pans, hangers, furnaces, and stoves that can increase work effectiveness and improve the quality of production and design systems to measure pH and temperature accurately and in real-time. This activity aims to develop yarn processing equipment at Pinankabu studio to increase productivity and maintain product quality. The expected benefits of this activity are that partners have natural colouring instruments that can improve the quantity and quality of production. Operators can work comfortably because the equipment is designed to design ergonomic users. Equipment that will be developed is an example of a similar business. The method used was the implementation of engineered products on partners. The implementation stages consisted of problem formulation, solution determination, solution design, implementation, evaluation, and activity outputs. The expected result is that partners can increase the productivity and quality of the yarn produced.

Identification of Power Plant Operation and Loading Problems at Ngalau Baribuik Micro Hydro, Padang Refdinal Nazir; Andi Pawawoi; Melda Latif; Muhammad Imran Hamid; Pinto Anugrah; Eka Fitrianto; Ahmad Ahmad
Jurnal Andalas: Rekayasa dan Penerapan Teknologi Vol. 1 No. 2 (2021): Desember 2021
Publisher : Jurusan Teknik Elektro, Universitas Andalas

Ngalau Baribuik Micro-hydro Power Plant (MHP) is located in Bukit Karang Putih, Lubuk Kilangan, Padang City. This MHP with a capacity of 10 kW belongs to the local community which has been operating since 2012. This MHP was built with the aim of meeting the electricity needs of the people of Nagari Ngalau Baribuik who are not covered by electricity from PLN. Based on the information obtained from the MHP management, until now the operating profile and loading pattern of the MHP which is managed independently by the community has not been identified. To overcome this problem, a community service activity was carried out to minimize the failure of the MHP in meeting the needs of the community and the worst possibility was that there was damage to the generator. The target of this activity is the people of Nagari Ngalau Baribuik who are consumers of the MHP. Through this community service activity, the people who are consumers of the Nagari Ngalau Baribuik MHP have understood the importance of saving energy to maintain the sustainability of the MHP. People also know tips for saving energy that they can apply in their daily lives. Efforts to transfer knowledge to the community have been successfully carried out through this activity.

The correlation between lightning and various weather parameters in the Padang monsoon system Ariadi Hazmi; Muhammad Imran Hamid; Rudy Fernandez; Hanalde Andre; Rizki Wahyu Pratama; Primas Emeraldi
Indonesian Journal of Electrical Engineering and Computer Science Vol 31, No 1: July 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v31.i1.pp1-9

The correlation between lightning and several weather parameters (rainfall, humidity, air temperature, and wind) in Padang from 2016 to 2020 was statistically analyzed. Lightning data and weather parameters were obtained from two electric field mills (EFMs) and the meteorology, climatology, and geophysics agency (BMKG), Indonesia. The study results show that the highest lightning occurred in November during the wet season. The correlation coefficient between lightning and rainfall during the wet and dry seasons was 0.52 and 0.26, respectively. Furthermore, the correlation coefficient of lightning with humidity, air temperature, and wind during the wet and dry seasons was 0.25, 0.06, 0.15, and -0.45, 0.25, -0.02, respectively. These results indicate a strong relationship between lightning and rainfall during the wet season; rainfall is the only primary variable in lightning frequency.

Perancangan Sistem Smart Egg Incubator sebagai Optimalisasi Pemanfaatan Energi Terbarukan di Ngalau Baribuik, Padang Refdinal Nazir; Andi Pawawoi; Melda Latif; Muhammad Imran Hamid; Pinto Anugrah; Eka Fitrianto
Warta Pengabdian Andalas Vol 30 No 2 (2023)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.30.2.304-313.2023

Micro Hydro (PLTMH) Ngalau Baribuik, Padang - West Sumatra, has operated since 2012. It is currently the only source of electricity for the local community, some of whom work as chicken breeders. Based on community service activities in 2021, information was obtained that the PLTMH's electricity had yet to be utilized optimally. Meanwhile, chicken breeders also needed egg incubators to increase their productivity. This community service activity aims to design an IoT-based automatic egg incubator to optimize the use of renewable energy. Activities started with field visits, making initial plans, designing and testing the machine, handing over the machine, and disseminating knowledge. The designed a smart egg incubator worked well after a 21-day hatching test for chicken eggs. The IoT technology installed on the device also functions appropriately and can show real-time temperature and humidity on mobile devices.

Smart Card-based Access Control System using Isolated Many-to-Many Authentication Scheme for Electric Vehicle Charging Stations Wervyan Shalannanda; Fajri Anugerah P. Kornel; Naufal Rafi Hibatullah; Fahmi Fahmi; Erwin Sutanto; Muhammad Yazid; Muhammad Aziz; Muhammad Imran Hamid
Journal of ICT Research and Applications Vol. 17 No. 2 (2023)
Publisher : DRPM - ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.ict.res.appl.2023.17.2.8

In recent years, the Internet of Things (IoT) trend has been adopted very quickly. The rapid growth of IoT has increased the need for physical access control systems (ACS) for IoT devices, especially for IoT devices containing confidential data or other potential security risks. This research focused on many-to-many ACS, a type of ACS in which many resource-owners and resource-users are involved in the same system. This type of system is advantageous in that the user can conveniently access resources from different resource-owners using the same system. However, such a system may create a situation where parties involved in the system have their data leaked because of the large number of parties involved in the system. Therefore, ‘isolation’ of the parties involved is needed. This research simulated the use of smart cards to access electric vehicle (EV) charging stations that implement an isolated many-to-many authentication scheme. Two ESP8266 MCUs, one RC522 RFID reader, and an LED represented an EV charging station. Each institute used a Raspberry Pi Zero W as the web and database server. This research also used VPN and HTTPS protocols to isolate each institute’s assets. Every component of the system was successfully implemented and tested functionally.

A Review of Strategies for Improving 3-Phase Induction Motor Performance Zuriman Anthony; Refdinal Nazir; Muhammad Imran Hamid
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 4 No. 1 (2024): March 2024
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v4i1.112

The 3-phase induction motor is an electric motor with a strong, reliable, and easy-to-operate construction, and it is cheaper compared to other types of electric motors, making it widely used by the public. Although this motor is considered reliable, it still has some drawbacks, such as low performance, including starting torque, power factor, and efficiency compared to other types of electric motors. Therefore, research to improve the performance of this motor is ongoing. This paper aims to outline some methods that have been used by previous researchers to improve the performance of induction motors based on literature studies. Some of the methods discussed in this paper include the use of permanent magnets on the rotor, operating the 3-phase induction motor on a single-phase system, developing ferromagnetic materials for the motor, increasing the number of coil phases, and optimizing coil design in the motor. The advantages and disadvantages of using these methods to improve motor performance are briefly outlined.

Harmonics Analysis of Input Current of 3-Phase PWM Rectifier Alfin Prima Adjie; Muhammad Imran Hamid
Andalas Journal of Electrical and Electronic Engineering Technology Vol. 1 No. 1 (2021): May 2021
Publisher : Electrical Engineering Dept, Engineering Faculty, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/ajeeet.v1i1.6

Rectifier is a non-linier load that causes harmonic distortion in the power system. Pulse-width modulation (PWM) method is an effective method in pressing the magnitude of harmonics in a rectifier application, it provides an almost sinusoidal input current. However, the variation of loads that supplied by a rectifier cause the harmonics that arise can still beyond the applicable standard. The amount of harmonics in the operating range of a rectifier need to be identified to determine the filter on the input side. In this research article, 3-phase PWM rectifier was designed with hysteresis current control technique using PSCAD software simulation. Harmonic compensation was carried out by applying an active filter based on P-Q theory to reduce the harmonic distortion that occurs in the input current, thus giving a low total harmonic distortion (THD) value. Based on the simulation, 3-phase PWM rectifier operation starting at a power level of 150 kW, giving a THD value above 5-10% by the increasing the amount of load supplied by the rectifier. The application of active filter based on the P-Q theory is able to compensate harmonics in the input current wave with a THD value below 5% in the rectifier operating range.

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