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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 Andalas Journal of Electrical and Electronic Engineering Technology Jurnal Abdimas: Pengabdian dan Pengembangan Masyarakat Jurnal Ilmiah Kurva Teknik International Journal of Advanced Science Computing and Engineering JECCOM JUAN: Jurnal Pengabdian Nusantara Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) 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 Transportation Other

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Voltage–Frequency Stability of a 300 W Portable Cross-Flow Pico-Hydropower System under Low-Flow Conditions Zulka Hendri; Akbar Abadi; Wiwik Wiharti; Yudia Seftiani
Jurnal Ecotipe (Electronic, Control, Telecommunication, Information, and Power Engineering) Vol 13 No 2 (2026): Jurnal Ecotipe, October 2026
Publisher : Jurusan Teknik Elektro, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jurnalecotipe.v13i2.4611

Abstract

Pico-hydropower systems are widely recognized as a reliable solution for rural electrification; however, their performance is highly sensitive to hydraulic and load variations, particularly under low-flow conditions. This study presents an experimental investigation of voltage–frequency stability in a 300 W portable cross-flow pico-hydropower system. The system consists of a simple weir intake, a variable-diameter PVC penstock, a cross-flow turbine, and a directly coupled single-phase AC generator without a governing mechanism. Experimental tests were conducted by applying six resistive load levels ranging from 0 to 100 W to evaluate the output voltage, frequency, generator rotational speed, overall system efficiency, and voltage regulation. The results show a significant frequency drop from 77 Hz at no-load to 57 Hz at full-load, corresponding to a deviation of approximately 35%. The system also exhibits a low overall efficiency of 15.21% and a voltage regulation of 36.6%, indicating poor energy conversion and unstable voltage performance. These findings reveal that the absence of a speed control mechanism and turbine–generator mismatch significantly affect system stability. The study concludes that load variation alone is insufficient to maintain stable operation, highlighting the need for advanced control strategies such as ELC to improve the voltage and frequency stability.
APLIKASI METODE LEAST SQUARE PADA PEMODELAN PASANG SURUT DI PERAIRAN PEMANGKAT Qalbi Hafiyyan; Puspita Rahmasari; Wiwik Wiharti; Putri Yusella; Riza Aulia; Daslin S.J.L. Tobing
Jurnal Ilmiah Kurva Teknik Vol. 15 No. 1 (2026): Jurnal Ilmiah Kurva Teknik
Publisher : Program Studi Teknik Sipil Fakultas Teknik Universitas Mahasaraswati Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36733/jikt.v15i1.12530

Abstract

Perairan Pemangkat yang terletak di Kalimantan Barat merupakan kawasan pesisir dengan berbagai aktivitas seperti perikanan, pelayaran, dan pembangunan infrastruktur. Aktivitas-aktivitas tersebut sangat rentan dipengaruhi oleh pasang surut. Dengan demikian, pengetahuan dan pemahaman karakteristik pasang surut pada perairan pemangkat menjadi sangat penting. Pendekatan yang dapat dilakukan untuk memahami karakteristik pasang surut adalah pemodelan pasang surut dengan metode least square. Pendekatan ini umum digunakan karena mampu memberikan hasil yang akurat. Pada penelitian ini, pasang surut dimodelkan berdasarkan data observasi pasang surut sepanjang 15 hari dengan luaran berupa amplitudo dan fase 9 komponen harmonik. Hasil pemodelan menunjukkan bahwa komponen harmonik M2 menjadi komponen harmonik dengan nilai tertinggi. Hal tersebut menunjukkan bahwa efek gravitasi bulan sangat mempengaruhi karakteristik pasang surut perairan Pemangkat. Selain itu, penelitian ini juga memberikan nilai bilangan formzahl sebesar 0,955. Hal tersebut menunjukkan bahwa tipe pasang surut perairan Pemangkat adalah campuran cenderung harian ganda, dimana perairan mengalami pasang dan surut masing-masing dua kai dengan ketinggian yang berbeda. Selanjutnya, amplitudo dari komponen harmonik juga digunakan untuk menghitung elevasi muka air penting meliputi MHWL, HHWL, MSL, LHWL, dan LLWL. Adapun, nilai dari kelima elevasi tersebut adalah -0,525 m untuk LLWL, -0,329 m untuk MHWL, 0,555 m untuk MSL, 1,439 m untuk MHWL, dan 1,635 m untuk HHWL. Akhirnya, penelitian ini diproyeksikan bisa menjadi referensi dalam merencanakan berbagai aspek di perairan pemangkat, seperti pelayaran dan infrastruktur.
Co-Authors Akbar Abadi Akbar Abadi Akbar Abadi Akbar Abadi, Akbar Aldi Rahman Amelia Yolanda Andira Agustin Aprinal Adila Asril Asri, Aprinal Adila Asrul, Junaidi Daslin S.J.L. Tobing Deddy Prayama dedi kurniadi E Efendi, E EFENDI Efrizon Efrizon Fajri Pratama FANDI AHMAD Ferdiansyah Ferdiansyah Firdaus - - Firmansyah - - Haryadi, Yuda Hendri, Lenny Novi Herisajani Herisajani Herisajani Herisajani Hidayatullah, Ikhram Ihsan L. Rimra Ihsan Lumasa Rimra Ikhram Hidayatullah Ikhwan Razikin Indriana, Falia Julsam Julsam, J Kasmar, Andre Febrian L. Rimra, Ihsan Lila Ayu Ratna Winanda Maria, Popi Mayura, Yona Muchtara, Efendi Mufid, Ulfiah Muhammad Najmul Fadli Muhardika Muhardika Muhardika Munasih Nazris Nazaruddin Ngoc, Nguyen Thi Bich Nofri Dodi Oktavia, Aulia Puspita Rahmasari Putri Yusella Qalbi Hafiyyan Rahmat Fanshuri - Rahmi Berlianti Rahmi Berlianti Randy Heriyanto Rayhan Shadiqi Razikin, Ikhwan Rimra, Ihsan Lumasa Riza Aulia Riza Widia Riza Widia Roni Putra Seftiani, Yudia Meka Silfia Rifka Tiara Aninditha Valdi Rizki Yandri Yani Kamisa Putri Yona Mayura Yudia Meka Seftiani Yudia Meka Seftiani Yudia Seftiani Yustini Zas Ressy Aidha Zulka Hendri Zulka Hendri Zulka Hendri Zulka Hendri