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All Journal Jurnal Ilmiah Poli Rekayasa Seminar Nasional Informatika (SEMNASIF) 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 JUAN: Jurnal Pengabdian Nusantara 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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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.
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.
Sistem Kontrol Pada Unit Proses Chilled Water System Muhardika; Wiwik Wiharti; Riza Widia; Andira Agustin; Yani Kamisa Putri; Yudia Meka Seftiani
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.
WORKSHOP STANDAR OPERASIONAL PROSEDUR (SOP) MAINTENANCE PLTS SHELTER PASIR PUTIH Herisajani Herisajani; Muhammad Najmul Fadli; Wiwik Wiharti; Nofri Dodi; Muhardika Muhardika; Ferdiansyah Ferdiansyah
JUAN: Jurnal Pengabdian Nusantara Vol. 3 No. 3 (2026): Juli 2026
Publisher : CV Sentra Nusa Connection

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63545/juan.v3.i3.336

Abstract

Pembangkit Listrik Tenaga Surya (PLTS) di Shelter Pasir Putih berperan penting sebagai sumber energi alternatif untuk mendukung aktivitas sosial dan keagamaan masyarakat pesisir. Kondisi lingkungan pantai berupa kelembaban tinggi, paparan garam, debu, dan angin kencang menyebabkan penurunan performa sistem. Sementara itu ketiadaan Standar Operasional Prosedur (SOP) maintenance membuat kegiatan pemeliharaan tidak terstruktur dan berisiko menimbulkan kerusakan serta gangguan operasional. Permasalahan mitra meliputi kurangnya pemeliharaan rutin, tidak adanya SOP tertulis, minimnya dokumentasi perawatan, serta keterbatasan pengetahuan teknis operator. Kegiatan pengabdian ini bertujuan menyusun dan menerapkan SOP maintenance PLTS serta meningkatkan kompetensi pengelola dalam melakukan perawatan preventif, korektif, dan prediktif secara mandiri. Metode yang digunakan adalah pelatihan partisipatif dan pendampingan terstruktur yang meliputi observasi lapangan, penyusunan draf SOP, workshop sosialisasi, demonstrasi dan praktik lapangan, serta finalisasi dokumen. Hasil kegiatan menunjukkan bahwa meningkatnya pemahaman dan keterampilan teknis pengelola dalam melakukan inspeksi, pembersihan, dan penanganan gangguan ringan, serta terbentuknya sistem dokumentasi perawatan yang mendukung keandalan sistem jangka panjang. Kegiatan ini disimpulkan mampu mendorong kemandirian mitra dalam pengelolaan PLTS dan menjamin kontinuitas suplai energi listrik secara optimal dan berkelanjutan di wilayah pesisir.
Studi Evaluasi Rewinding Motor Induksi Tiga Fasa 1,5 kW 3000 rpm dengan Parameter Tahanan Isolasi dan Arus Tanpa Beban Rayhan Shadiqi; Riza Widia; Wiwik Wiharti; Aldi Rahman; Akbar Abadi
Jurnal Surya Energy Vol. 11 No. 1 (2026)
Publisher : Teknik Elektro, Universitas Muhammadiyah Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32502/jse.v11i1.1700

Abstract

Three-phase induction motors are widely used as electric drives in industrial sectors; therefore, their reliability and operational condition must be continuously maintained. One common repair method applied to induction motors experiencing winding damage is the rewinding process. This study presents an evaluation of the rewinding results of a three-phase induction motor rated at 1.5 kW with a nominal speed of 3000 rpm, conducted at the Electrical and Instrumentation Workshop Unit of PT. Semen Padang. The objective of this research is to assess the operational feasibility of the motor after rewinding by examining the conformity of electrical parameters, the quality of the insulation system, and the phase current balance. The research methodology includes collecting nameplate data as a reference, documenting stator windings, performing a visual evaluation of the stator condition, and conducting electrical tests comprising winding resistance measurement, insulation resistance (Rsi) testing, Polarization Index (PI) evaluation, and no-load current measurement. The test results indicate that the winding resistance values are balanced at 4.6 Ω for each phase, while the insulation resistance ranges from 1.80 to 3.31 GΩ with a Polarization Index value of 2.17. The no-load current test results show an average current of 1.29 A, corresponding to approximately 41% of the rated current specified on the nameplate, with a current unbalance of 2.3%. Based on these results, it can be concluded that the rewinding process was successfully performed and the induction motor meets the technical requirements and is suitable for re-operation.
Co-Authors Akbar Abadi Akbar Abadi, Akbar Aldi Rahman Andira Agustin Asri, Aprinal Adila Asrul, Junaidi Deddy Prayama E Efendi, E Ferdiansyah Ferdiansyah Firdaus - - Firmansyah - - Haryadi, Yuda Hendri, Lenny Novi Herisajani Herisajani Herisajani Herisajani Hidayatullah, Ikhram Ihsan Lumasa Rimra Ikhwan Razikin Indriana, Falia Julsam, J Kasmar, Andre Febrian L. Rimra, Ihsan Maria, Popi Mayura, Yona Muchtara, Efendi Mufid, Ulfiah Muhammad Najmul Fadli Muhardika Muhardika Muhardika Ngoc, Nguyen Thi Bich Nofri Dodi Oktavia, Aulia Rahmat Fanshuri - Rahmi Berlianti Rayhan Shadiqi Razikin, Ikhwan Rimra, Ihsan Lumasa Riza Widia Roni Putra Seftiani, Yudia Meka Silfia Rifka Tiara Aninditha Valdi Rizki Yandri Yani Kamisa Putri Yona Mayura Yudia Meka Seftiani Yustini Zulka Hendri Zulka Hendri