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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Jurnal Edukasi Elektro Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Rekayasa Mesin BANGUN REKAPRIMA Journal of Applied Information, Communication and Technology (JAICT) Jurnal Sustainable: Jurnal Hasil Penelitian dan Industri Terapan Jurnal Abdimas Mandiri Eksergi: Jurnal Teknik Energi Jurnal Pengabdian Masyarakat Bangsa Engagement: Jurnal Pengabdian Kepada Masyarakat Jurnal Polimesin
Dwiana Hendrawati
Jurusan Teknik Mesin Politeknik Negeri Semarang
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Analysis Of Solar Power Plants With A Capacity Of 100 Wp With Automatic Transfer Switch In The Energy Conversion Laboratory Of Semarang State Polytechnic Suwarti, Suwarti; Aulia, Nur Fatowil; Wahyono, Wahyono; Prasetyo, Budhi; Hendrawati, Dwiana; Hermawan, Baktiyar Mei
Eksergi Vol. 20 No. 02 (2024): MAY 2024
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/eksergi.v20i02.5807

Abstract

Solar energy is one of the renewable energy sourcesby utilizing the sun as its energy source. The planning of thePLTS uses an on-grid system, the system is still connected tothe PLN network. The system is used as a backup forelectricity flow. The system will work automatically when thePLN electricity flow is cut off by utilizing the AutomaticTransfer Switch (ATS) control system. The PLTS was tested bymeasuring the voltage, current, and input and output powerfor 5 days from 09.00-15.00 WIB with data collection every 60minutes. Then calculations were made to determine theefficiency of the PLTS. Calculations were also made of theenergy produced by the panels needed and produced by thelights ideally and actually. The results of the DC voltage andDC current tests on average at a load of 70 Watts produced bythe solar panel were 12.7 V and 2.41 A with a data collectionperiod of 7 hours, producing energy of 214.3 Wh andproducing the highest efficiency of 7.9% and the lowest 4.84%.
Evaluation of the Efficiency and Stability of High-Frequency Inverters Under Varying Load Profiles in Photovoltaic Systems Zahro, Nabila Aida Az; Samaratungga, Langga; Hendrawati, Dwiana; Ferandez, Aggie Brenda; Efendi, Erwan Tri
Eksergi Vol. 21 No. 03 (2025): SEPTEMBER 2025
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/eksergi.v21i03.7111

Abstract

This research undertakes an operational performance analysis of a high-frequency inverter (HFI) within a Solar Power Plant (SPP) system configuration. The investigation prioritizes assessing the effects of pure resistive and mixed resistive-inductive load profiles on its efficiency stability. Experimental findings definitively demonstrate that the HFI inherently maintains superior efficiency stability when operating under purely resistive loads. Conversely, the introduction of varying inductive loads tends to compromise this efficiency stability, inducing significant fluctuations. These results yield crucial recommendations, establishing that HFIs are optimally suited for systems with predominantly resistive loads, thereby contributing to the overall system power efficiency enhancement
Design of Feed Rate Control System on Loss in Weight Feeder using Programmable Logic Controller Wardhana, Asepta Surya; Nurin Hamdani, Chalidia; Kusuma Dewi, Astrie; Ravy, Javier Umar; Aji, Ferro; Hendrawati, Dwiana
Jurnal Polimesin Vol 21, No 1 (2023): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i1.3184

Abstract

In the industrial world where there is a material process or solid product, it definitely requires a consistent material distribution process to be used in the next process. And to move material from the main storage area, it is necessary to use a tool commonly called a feeder machine or Loss In Weight Feeder. This tool has a feeder system consisting of a hopper and a feeder mounted on a load cell with high accuracy. So in this study, a feed rate control system was designed on the Loss In Weight Feeder to keep the feed rate process at the desired value, so there is a controller to regulate the motor speed in the feeder. To run the control system, a parameter control is needed, namely PID. In this study, in designing the PID controller using Direct Synthesis tuning which will be carried out using two methods in producing a plant model, namely the process model, the proportional gain (Kp) value is 38.7, integral gain (Ki) is 0.6, and derivative gain (Kp) is 0.6. Kd) of 8.12. And the plant structure model of the Auto Regressive eXogenous (ARX) model, the proportional gain (Kp) value is 13, the integral gain (Ki) is 0.78, and the derivative gain (Kd) is 12.85. Based on direct testing, the PID controller parameter that is suitable and reliable with the desired process response from the feed rate output from the Loss In Weight Feeder prototype is the PID controller parameter using Direct Synthesis tuning based on the plant process model. In the system test without disturbance, it produces a time constant (τ) of 3 seconds, settling time (ts) of 5 seconds, delay time (td) of 1.5 seconds, overshoot (Mp) of 79.92% and steady state error (ess) of 0%. And when testing the prototype by providing interference, it shows a fairly good interference rejection
Empowering Regional MSMEs through Clean Energy and Smart Technology in Thematic Villages Kurnianingsih; Hendrawati, Dwiana; Lathief, Muttabik Fathul; Saddewisasi, Wyati
Engagement: Jurnal Pengabdian Kepada Masyarakat Vol. 9 No. 2 (2025): November 2025
Publisher : Asosiasi Dosen Pengembang Masyarajat (ADPEMAS) Forum Komunikasi Dosen Peneliti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29062/engagement.v9i2.1805

Abstract

This regional community service program seeks to empower Micro, Small, and Medium Enterprises (MSMEs) in the Semarang sub-districts of Meteseh and Tembalang by integrating clean energy solutions and smart technology. Meteseh faces significant challenges with plastic waste management, while Tembalang struggles with maintaining a stable energy supply for its MSMEs. To address these issues, the project introduced a solar-powered smart plastic waste shredding machine in Meteseh and a solar panel monitoring system in Tembalang. The shredding machine reduced unmanaged plastic waste by approximately 65%, enabling the processing of up to 15 kg of plastic per hour, while promoting recycling and environmental sustainability. In Tembalang, the solar energy system increased the operational hours of MSMEs’ craft production by 6–8 hours per day, resulting in a 100% increase in production capacity and a 30% reduction in operational energy costs. These initiatives have enhanced MSMEs’ productivity, sustainability, and resilience while fostering socio-cultural transformation and green economic awareness within the communities. The program demonstrates the measurable and transformative potential of clean energy and smart technology in regional development, offering a scalable and replicable model for sustainable economic growth across Indonesia and beyond.
Co-Authors - Sahid, - . Sahid . Suwarti A.A. Ketut Agung Cahyawan W AA Sudharmawan, AA Abdulrazaq, Mohammed N. Adi Soeprijanto Agus Hendroyono Agus Hendroyono, Agus Aji, Ferro Alyasa, Moh. Fani Aminuyati An Nizhami, Avicenna Anis Roihatin Annisa Dewi Agustin Arisa Olivia Putri Aulia, Nur Fatowil Brainvendra Widi Dionova Budhi Prasetiyo Budhi Prasetyo Dina Mariani Efendi, Erwan Tri F. Gatot Sumarno, F. Gatot Fachry Abda El Rahman Ferandez, Aggie Brenda Hamim S, Ahmad Hamzah Eteruddin Hermawan, Baktiyar Mei Hutagalung, Nirmalasari Kurnianingsih Kurniawan Aldy Kusuma Kusuma Dewi, Astrie Laksana, Kurnia Adam Lathief, Muttabik Fathul Legenda Prameswono Pratama Machrus Ali Mei H, Baktiyar Mochamad Ashari Mochammad Denny Surindra Muhammad Hanif Mulyono Mulyono Mulyono Mulyono Nanang Apriandi Nur Fatowil Aulia Nurin Hamdani, Chalidia Nurrohmah, Hidayatul Nurseno Bayu Aji, Nurseno Bayu Padang Yanuar Rahmanda, Ibnu Dwi Ravy, Javier Umar Saddewisasi, Wyati Safaruddin, Yanuar Mahfudz Safarudin, Yanuar Mahfud Sahid Sahid Sahid Samaratungga, Langga Soedibyo Soedibyo Sudjito Soeparman Sudjito Sudjito Supriyo Supriyo Suwarti Suwarti Suwarti Suwarti Suwarti Suwarti Timotius Anggit Kristiawan Totok Prasetyo Totok Prasetyo Wahyono Wahyono Wahyono Wahyono Wardhana, Asepta Surya Wigiantoro Wigiantoro Wiwik Purwati Widyaningsih Yanuar Mahfudz Safarudin Yusuf Dewantoro Herlambang Zahro, Nabila Aida Az