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All Journal Jurnal Ilmiah Poli Rekayasa Seminar Nasional Informatika (SEMNASIF) EPI International Journal of Engineering Andalasian International Journal of Applied Science, Engineering, and Technology Brilliance: Research of Artificial Intelligence Jurnal Abdimas: Pengabdian dan Pengembangan Masyarakat International Journal of Advanced Science Computing and Engineering JECCOM Jurnal Surya Energy
Wiwik Wiharti
Politeknik Negeri Padang
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 Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Other

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Performance and Capabilities of Small Qualification Contractors on the Sustainable Construction Regulations Implementation Choir, Mochamad; Sebayang, Nusa; Wijayaningtyas, Maranatha; Wiharti, Wiwik
EPI International Journal of Engineering Vol 7 No 2 (2024): Volume 7 Number 2, August 2024
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/epi-ije.082024.05

Abstract

The construction sector is important in Indonesia's economic and social development. With the increasing awareness of the importance of sustainability, implementing sustainable construction principles has become necessary. On the other hand, construction service businesses with small qualifications face various challenges in meeting strict regulations and adapting to sustainable practices. This study aims to analyse the performance and capabilities of sustainable construction services businesses in small qualification contractors in East Java on implementing sustainable construction services business regulations. The research method used is mixed methods, as well as qualitative and quantitative methods. As many as 100 respondents are members of the Gapeksindo East Java association with small qualifications. The results showed that construction service businesses with good management (high managerial ability) tend to be more able to comply with sustainable construction regulations. In addition, the descriptive analysis results show recommendations and strategies to improve the implementation of construction services regulations among small businesses, such as training and education, financial support, Simplification of Regulations, technology and innovation, Increased Market Awareness, and technical assistance. With these strategies, it is expected that small construction service businesses in East Java can be more effective in implementing sustainable construction regulations to improve their performance and contribution to sustainable development.
Solar Panel Installation Engineering for Energy Conversion Optimization in Solar Power Plants Yandri, Valdi Rizki; Mayura, Yona; Wiharti, Wiwik; Hendri, Zulka; Hendri, Lenny Novi; Mufid, Ulfiah
JECCOM: International Journal of Electronics Engineering and Applied Science Vol. 2 No. 2 (2024)
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jeccom.2.2.42-49.2024

Abstract

The sunlight absorption is the main technical factor of solar power plants performance because it affects to the amount of solar energy conversion. In order to optimize this absorption, the position of solar panel should be adapted to the direction of sunlight so it can improve the economic factor of solar power plants utilization. Furthermore, in this research, we have designed and tested three serial connection solar panels with single solar tracker (SST) to optimize the absorption of sunlight and its conversion to electricity, where the electrical current from panel with SST (1.41 – 2.52 A) is higher than panel without SST (0.89 – 1.59 A). Another parameter, namely electrical power of solar power plants, is proportional to electrical current and also higher than without SST (65.2 – 102.4 W), so the stored electrical energy in battery can be also increased. The utilization of Arduino Mega 2560, driver motor BTS7960, and linear actuator can optimize the solar panel absorption and finally this control circuit addition can increase the solar energy conversion to electricity. Besides that, this control circuit will reset the position of solar panel at 6.30 pm to the starting position. It means the solar energy conversion can be maximized by using SST and this advantage can increase the efficiency and support the transition to renewable energy.
The Impact of Load Variations on The 300 W Pico-hydro Power Plants Parameters (Voltage, Current, Frequency and Generator Speed) Hendri, Zulka; Seftiani, Yudia Meka; Abadi, Akbar; Wiharti, Wiwik; Herisajani, Herisajani; Yandri, Valdi Rizki; Haryadi, Yuda; Mayura, Yona
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 5 No. 2 (2025): July 2025
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v5i02.249

Abstract

This research examines how load variations affect the performance of a pico-hydro power system, specifically focusing on voltage, current, frequency, and generator speed. Experiments were carried out through direct measurement under different load conditions. The findings reveal that as the load increases, the output voltage decreases due to higher circuit resistance, while the output current rises significantly. The generator frequency remains relatively stable under light loads but starts to fluctuate near full capacity, indicating the need for improved regulation. Similarly, the generator’s rotational speed declines with higher loads, signaling a performance limit. These results highlight the critical relationship between load changes and system performance, providing valuable insights to enhance the efficiency and stability of pico-hydro systems, especially for renewable energy applications in remote areas.
Sistem Kontrol Pada Unit Proses Chilled Water System Muhardika; Wiharti, Wiwik; Widia, Riza; Agustin, Andira; Kamisa Putri , Yani; Meka Seftiani, Yudia
Jurnal Surya Energy Vol. 10 No. 1 (2025)
Publisher : Teknik Elektro, Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jse.v10i1.916

Abstract

Penelitian ini bertujuan untuk mengevaluasi bagaimana sistem kontrol otomatis pada unit Process Chilled Water (PCW) di PT. Infineon berfungsi dalam mendukung proses pendinginan yang efisien. Kami fokus pada kinerja sistem dalam mengatur suhu dan tekanan, serta bagaimana kontrol Proportional-Integral-Derivative (PID) berperan dalam menjaga kestabilan operasional. Hasil penelitian menunjukkan bahwa sistem ini bekerja dengan baik, mampu mempertahankan suhu dalam rentang 15˚C hingga 23°C dan tekanan antara 2,5 hingga 3,2 bar. Kontrol PID yang diterapkan terbukti responsif terhadap perubahan suhu dan tekanan, sehingga sistem dapat menyesuaikan diri dengan cepat dan akurat. Dengan menggunakan sensor tekanan dan suhu, sistem secara otomatis mengaktifkan atau menonaktifkan pompa, yang membantu menjaga kondisi operasional yang optimal. Salah satu aspek penting dari sistem ini adalah tampilan Human-Machine Interface (HMI), yang memudahkan operator dalam memantau status operasional secara real-time. HMI memungkinkan operator untuk membuat keputusan yang lebih cepat dan tepat, serta meningkatkan respons terhadap situasi darurat. Penelitian ini juga menunjukkan bahwa integrasi antara sistem kontrol otomatis dan HMI tidak hanya meningkatkan efisiensi, tetapi juga mengurangi kemungkinan kesalahan manusia dalam pengelolaan proses pendinginan.Secara keseluruhan, temuan dari penelitian ini menunjukkan bahwa penerapan sistem kontrol otomatis di PT. Infineon memberikan kontribusi signifikan terhadap peningkatan kinerja sistem pendinginan. Kami berharap hasil penelitian ini dapat menjadi referensi berharga bagi industri lain yang ingin menerapkan sistem kontrol otomatis serupa untuk meningkatkan efisiensi operasional mereka.
Design of a Microcontroller-Based Corn Dryer Wiharti, Wiwik; Hendri, Zulka; Mayura, Yona; Rimra, Ihsan Lumasa; Razikin, Ikhwan
Brilliance: Research of Artificial Intelligence Vol. 3 No. 2 (2023): Brilliance: Research of Artificial Intelligence, Article Research November 2023
Publisher : Yayasan Cita Cendekiawan Al Khwarizmi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47709/brilliance.v3i2.3057

Abstract

Maize drying is a crucial procedure in the agricultural and food industries, aimed at decreasing the moisture content of maize kernels to prolong their shelf life, inhibit microbial growth and maintain their quality. Two common methods for drying corn include natural techniques, which involve drying the maize in the sun, and artificial techniques, where specialized equipment such as hot air dryers, drum dryers and microwaves are employed. The author constructed a corn dryer utilizing Arduino. This device employs heat elements and fans to expedite the corn drying process. The tool can significantly quicken the corn drying process. The author utilises a DHT22 sensor to gauge temperature and humidity levels of the corn. The device is capable of generating temperatures ranging from 20?C to 90?C, thanks to the assistance of the DHT22 sensor during the drying process.
Co-Authors Agustin, Andira Akbar Abadi, Akbar Asri, Aprinal Adila Asrul, Junaidi Choir, Mochamad Deddy Prayama E Efendi, E Firdaus - - Firmansyah - - Haryadi, Yuda Hendri, Lenny Novi Herisajani Herisajani Hidayatullah, Ikhram Ihsan Lumasa Rimra Ikhwan Razikin Indriana, Falia Julsam, J Kamisa Putri , Yani Kasmar, Andre Febrian L. Rimra, Ihsan Maranatha Wijayaningtyas Maria, Popi Mayura, Yona Meka Seftiani, Yudia Muchtara, Efendi Mufid, Ulfiah Muhardika Ngoc, Nguyen Thi Bich Nusa Sebayang Oktavia, Aulia Rahmat Fanshuri - Rahmi Berlianti Razikin, Ikhwan Rimra, Ihsan Lumasa Riza Widia Roni Putra Seftiani, Yudia Meka Silfia Rifka Valdi Rizki Yandri Winnugroho Wiratman, Manfaluthy Hakim, Tiara Aninditha, Aru W. Sudoyo, Joedo Prihartono Yona Mayura Yustini Zulka Hendri Zulka Hendri