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ELKHA : Jurnal Teknik Elektro
Published by Universitas Tanjungpura
ISSN : 18581463     EISSN : 25806807     DOI : http://dx.doi.org/10.26418
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering
The ELKHA publishes high-quality scientific journals related to Electrical and Computer Engineering and is associated with FORTEI (Forum Pendidikan Tinggi Teknik Elektro Indonesia / Indonesian Electrical Engineering Higher Education Forum). The scope of this journal covers the theory development, design and applications on Automatic Control, Electronics, Power and Energy Systems, Telecommunication, Informatics, and Industrial Engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik Listrik dan Elektro
Articles 302 Documents
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Evaluation of Wireless Solar Power Transfer System Performance in Partial Shadowing Situation Gultom, Togar Timoteus; Irwanto, Muhammad
ELKHA : Jurnal Teknik Elektro Vol. 17 No.2 October 2025
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/elkha.v17i2.97636

Abstract

The wireless solar power transfer (WSPT) system is impacted by solar radiation that arrives on the surface of the solar module. The objective of the research is to evaluate the performance of the WSPT system under a shadowing situation. The method of this research is that the solar module and WSPT are modeled and simulated using MATLAB SIMULINK. Three solar modules with different degrees of solar irradiation are subjected to it. The research results indicate that to meet the system frequency of 50 Hz and match the frequency of both coils, the inductance of the transmitter and receiver coils, which is 0.1689 H, should be connected in parallel to a capacitor of 60 µF. It shows that the three solar modules connected in series have an output voltage of 177 V. It shows that the WSPT system and solar modules' performance are impacted by the shadowing situation. Higher shadowing levels will lessen the amount of sunlight that reaches the solar modules' surface. It implies that both the WSPT system's performance and that of the solar modules will decline concurrently.
Zoned Audio Distribution: Systematic Review and Optimization Framework in Mosque Rosad, Safiq; Yudhana, Anton; Sutikno, Tole
ELKHA : Jurnal Teknik Elektro Vol. 17 No.2 October 2025
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/elkha.v17i2.96757

Abstract

The acoustics of mosques present significant challenges due to their substantial spatial dimensions, highly reflective surfaces, and intricate architectural designs. These characteristics frequently compromise the clarity of sound, which is imperative for religious activities such as sermons and prayers. Despite global advancements in audio technology, centralized sound systems remain the most common choice in many mosques worldwide. However, this approach frequently results in issues such as uneven sound distribution, acoustic dead zones, and excessive reverberation. These factors significantly impact speech intelligibility and overall listener comfort. To address this critical issue, this study presents a systematic literature review spanning from 2003 to 2025. This research also incorporates an initial empirical survey conducted on 77 mosques in Indonesia to provide real-world validation. The survey results empirically corroborated the theoretical problems, revealing that 65% of respondents considered the sound unclear, and less than 50% expressed satisfaction with the current audio system. In light of these findings, the present paper puts forth an integrated optimization framework centered on speaker zoning. The framework synthesizes insights from acoustic engineering, psychoacoustics, and predictive modeling to create a holistic, data-driven solution. The model outlined herein provides a procedural framework for future research endeavors, emphasizing the utilization of professional acoustic simulation tools to achieve uniform sound distribution and high speech intelligibility. This methodological approach guarantees that the acoustic solutions are not only scientifically valid but also user-centric and relevant to the congregation's needs.

Page 31 of 31 | Total Record : 302

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