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All Journal Buletin Udayana Mengabdi Jurnal SPEKTRUM PROSIDING CSGTEIS 2013 International Journal of Engineering and Emerging Technology Journal of Applied Agricultural Science and Technology Jurnal Ilmu Multidisplin Jurnal Riset Rumpun Ilmu Teknik (JURRITEK) Jurnal Indonesia Sosial Sains Merkurius: Jurnal Riset Sistem Informasi dan Teknik Informatika Majalah Ilmiah Teknologi Elektro Jurnal SPEKTRUM Journal of Electrical, Electronics and Informatics
I Wayan Sukerayasa
Teknik Elektro Fakultas Teknik Universitas Udayana
Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Neuroscience Physics Public Health Social Sciences

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 1 
IMPLEMENTASI SISTEM KONTROL OTOMATIS PADA PROTOTIPE ALAT PENERANGAN JALAN BERBASIS INTERNET OF THINGS SEBAGAI UPAYA EFISIENSI ENERGI DI JALAN BUKIT DHARMA RAYA JIMBARAN I N. B. T. Putra; C. G. I. Partha; I W. Sukerayasa
Jurnal SPEKTRUM Vol. 12 No. 3 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2025.v12.i03.p1

Abstract

The implementation of an AC Light Dimmer and Relay 2 Channel as an automatic lamp control system on a Street Lighting (APJ) prototype based on the Internet of Things (IoT) is used to support energy efficiency on Jalan Bukit Dharma Raya Jimbaran. This system is designed to automatically adjust light intensity based on time and the presence of road users detected by an ultrasonic sensor. Monitoring and control are performed in real-time via the Telegram platform, with energy consumption monitored using the PZEM-004T module. The prototype is built using an ESP32 microcontroller, which controls the lamp activation, brightness through the AC Light Dimmer, and ON/OFF status via the Relay 2 Channel. Test results show that the system can improve energy efficiency by up to 43.75% and save electricity costs by Rp132.56 during 2 hours of operation. This system implementation has proven to be effective, adaptive to environmental conditions, and supports the application of intelligent and energy-efficient street lighting systems.
IMPLEMENTASI API TELEGRAM SEBAGAI ANTARMUKA MANUSIA-MESIN UNTUK SISTEM MONITORING DAN NOTIFIKASI KONDISI REAL-TIME INFRASTRUKTUR PUBLIK Joni Wijaya Fathoni; Ngurah Indra ER; I Wayan Sukerayasa
Jurnal SPEKTRUM Vol. 12 No. 3 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2025.v12.i03.p2

Abstract

Public Street Lighting (PJU) is a crucial component of public infrastructure, but ineffective real-time maintenance often leads to slow damage detection, resulting in energy waste, high maintenance costs, and increased safety risks. Previous research has highlighted the importance of proactive monitoring systems based on the Internet of Things (IoT) for PJU energy efficiency. However, conventional Human-Machine Interface (HMI) solutions such as custom mobile applications are often expensive and inflexible. This research proposes the implementation of the Telegram API as a low-cost HMI for a real-time monitoring and damage notification system for PJU. This system integrates an ESP32 microcontroller with an LDR sensor, ultrasonic sensor, and PZEM-004T module for acquiring data on light intensity, traffic activity, and electricity consumption. The Telegram Bot is utilized to send monitoring data and damage notifications in real-time to operators without requiring additional applications or dedicated servers. The main innovation lies in using Telegram as the primary communication medium, which is fast, secure, and efficient. Test results show that the system successfully detects and notifies light conditions and monitors energy consumption accurately, with notifications received within 1-2 seconds as long as the internet connection is stable. This implementation proves that the Telegram API is a functional, responsive, secure, and cost-effective HMI solution for public infrastructure management, offering flexibility and ease of access across various platforms.
PEMANFAATAN INTERNET OF THINGS (IOT) PADA PERANCANGAN SISTEM BANGUNAN CERDAS Komang Bagus Dwi Widiatama Putra; I Nyoman Satya Kumara; I Wayan Sukerayasa; I Made Arsa Suyadnya
Jurnal SPEKTRUM Vol. 12 No. 3 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2025.v12.i03.p17

Abstract

The development of Internet of Things (IoT) technology has made a significant contribution to the design of smart building systems. This research discusses the utilization of IoT in designing smart building systems based on previous studies. The focus of the discussion includes the use of controllers, various types of sensors and control devices, and system scope. By understanding the use of IoT devices and the approaches used in prior research, this study is expected to serve as a reference in the development of smart building systems to be more adaptive and efficient in the future.
RANCANG BANGUN SISTEM SENSOR OTOMATIS PADA ALAT PENERANGAN JALAN (APJ) DI JALAN BUKIT DHARMA RAYA JIMBARAN I Wayan Darsana; I Wayan Sukerayasa; Cokorde Gede Indra Partha
Jurnal SPEKTRUM Vol. 12 No. 3 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2025.v12.i03.p20

Abstract

Street lighting plays a crucial role in supporting public safety and comfort, especially at night. However, many areas, such as Jalan Bukit Dharma Raya Jimbaran, still lack adequate lighting systems. This study designs and implements an intelligent street lighting system based on the Internet of Things (IoT), utilizing the ESP32 Devkit V1 as the central controller, along with an LDR sensor, ultrasonic sensor, and an AC Light Dimmer to automatically adjust light intensity according to time and traffic conditions. Test results show that the system operates efficiently and adaptively, achieving energy savings of up to 17.6% and cost savings of Rp 54.39 compared to a manual system, with efficiency levels varying depending on road user activity. The prototype has proven effective in enhancing energy efficiency and offers an adaptive lighting solution that can be further developed to support the concept of a sustainable smart city.
PERANCANGAN SPBKLU SEPEDA MOTOR LISTRIK DAN PEMILIHAN LOKASI PEMASANGAN DI BALI SELATAN N. W. Sindi; D. A. S. Santiari; I. A. D. Giriantari; W. G. Ariastina; I W. Sukerayasa; I N. S. Kumara; I N. Setiawan
Jurnal SPEKTRUM Vol. 12 No. 3 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2025.v12.i03.p22

Abstract

The limited availability of fossil fuel reserves and the fact that their formation takes millions of years have driven the accelerated adoption of electric vehicles as a strategic step to reduce carbon emissions. Bali, as one of the leading regions in the clean energy transition, requires adequate infrastructure support, particularly charging stations as the main facilities for electric vehicles, whose development must take into account proper location selection and design. This study focuses on the design and location selection of battery swapping stations for electric motorcycles (SPBKLU) in South Bali, including three-dimensional designs and electrical layouts, as well as location determination using the Analytical Hierarchy Process (AHP) method by evaluating potential sites. The results of this study are one optimal location for SPBKLU installation, accompanied by a three-dimensional design suited to the site’s characteristics and the SPBKLU’s electrical layout. In the future, it is expected to serve as a study and reference for the development of electric vehicle infrastructure in Bali, accelerating public adaptation to this technology.
ANALISIS TEKNIS DAN KELAYAKAN EKONOMI SISTEM PEMBANGKIT LISTRIK TENAGA PLTB TURBIN TULIP DAN PLTS MENGGUNAKAN SIMULASI HOMER PRO I M Dwijaksana; I W Sukerayasa; I G N Janardana; C G I Partha C G I Partha; P A Mertasana; A A G M Pemayun
Jurnal SPEKTRUM Vol. 12 No. 3 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2025.v12.i03.p23

Abstract

The horizontal axis wind turbine in the smart microgrid system at DH Building, Faculty of Engineering, Udayana University, is not operating optimally due to blade damage. This study aims to evaluate the replacement of the horizontal wind turbine with a tulip-type wind turbine and to analyze its economic feasibility. Simulation and optimization were carried out using HOMER Pro software, considering the local wind and solar energy potential. The simulation results indicate an annual energy production of 103,205 kWh, with contributions from the PV system at 61.5% and the wind turbine at 38.5%. From an economic perspective, the project yields a Net Present Cost (NPC) of Rp 1,668,925,000, a Levelized Cost of Energy (LCoE) of Rp 4,368.36/kWh, and a Payback Period of 16 years and 8 months. The feasibility analysis results in a Net Present Value (NPV) of –Rp 308,312,810.02 and a Profitability Index (PI) of 0.7635. These findings demonstrate that the project is not financially feasible under the PLN tariff of Rp 1,699.53/kWh and a discount rate of 8.5%.
PERANCANGAN SPKLU SEPEDA MOTOR LISTRIK DAN PEMILIHAN LOKASI PEMASANGAN DI BALI SELATAN N. M. G. A. Krisnayani; I N. S. Kumara; I N. Setiawan; W. G Ariastina; I W. Sukerayasa; I. A. D. Giriantari; D. A. S. Santiari
Jurnal SPEKTRUM Vol. 12 No. 4 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Indonesia is currently in a transition toward clean energy. Therefore, accelerating the adoption of Electric Vehicles (EVs) as a replacement for fossil-fueled vehicles has become a strategic step that is being actively promoted. To support this, the availability of adequate infrastructure is a key factor, with charging stations serving as the main infrastructure for electric vehicles. For optimal operation, the development of charging stations requires proper location selection and design. This study focuses on the design and location selection of Public Electric Vehicle Charging Stations (SPKLU) intended for electric motorcycles in the South Bali region. The design features a three-dimensional model of the charging station, along with its corresponding electrical plan. Meanwhile, location selection is carried out using the Analytical Hierarchy Process (AHP) method by evaluating potential sites. The outcome of this study is the identification of the best location for installing the SPKLU, accompanied by design suited to the site’s characteristics and the SPKLU’s electrical design. It is expected that this work can serve as a study and reference for further development to accelerate the adoption of electric vehicles in Bali.
PERANCANGAN DIRECT CHARGING SEPEDA MOTOR LISTRIK DAN PEMILIHAN LOKASI PEMASANGAN DI BALI SELATAN I N. A. P. Putra; I W. Sukerayasa; W. G Ariastina; I N. S. Kumara; I N. Setiawan; I. A. D. Giriantari; D. A. S. Santiari
Jurnal SPEKTRUM Vol. 12 No. 4 (2025): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Bali is one of the regions in Indonesia at the forefront of the transition toward clean energy. One of the key steps to achieving this goal is the shift to electric vehicles (EVs). Therefore, the design of electric vehicle charging stations is a crucial factor in ensuring a smooth transition. Charging stations must be strategically located to provide easy access for users, and their planning must comply with existing regulations. One type of charging station is the Public Electric Vehicle Charging Station (SPKLU). However, most SPKLUs are focused on electric cars, whereas the use of electric motorcycles is far more widespread. For this reason, this study focuses on the design of a direct charging system for electric motorcycles, which can be connected directly to the vehicles. The design process includes both 3D modeling and the electrical layout. The selection of a suitable location will be carried out using the Analytic Hierarchy Process (AHP) to determine the optimal site in the South Bali area
Co-Authors A A G M Pemayun A. A. G. M. Pemayun A. A. T. B. Artawan A. Dharma A. Jagad Miftahul Rizqy Agus Satrya Wibawa Allan Ardiansyah Anak Agung Istri Pandawani Anak Agung Ngurah Amrita Bagas Maruli Pangaribuan Bawa Adiputra Bima Aditya Putra C G I Partha C G I Partha C. G. I. Partha, C. G. I. C. G. Indra Partha Chandra Wimartono Manurung Cokorde Gede Indra Partha D. A. S. Santiari Derren, M. Dewa Ayu Sri Santiari Drs. I Wayan Darsana,M.Ed . Edyama Vasabri Genta Maulana Etis Meilandari Gede Agus Ryzky Martha Gede Endrawadi Gesta Winantara Giusna Dipankara Kusnandar I Dewa Gede Wisnu Agung Bayuna I G.N. Evan Aditya Pramana I G.N.A.B Rama Wahyu Dewangga I Gede Agus Januar Ariawan I Gede Dyana Arjana I K Agus Setiawan I K. S. T. Lilayoga I Kadek Adi Darmadi I Kadek Adi Febriana Putra I Komang Widi Astawa I M Dwijaksana I Made Agus Artha Putra I Made Agus Sastradiangga I Made Arsa Suyadnya I Made Arya Supartana I Made Gusmara Nusaman I Made Mataram I Made Wahyu Darmahesta I N Satya Kumara I N. A. P. Putra I N. B. T. Putra I N. Lanus I N. S. Kumara I N. Setiawan I N. Surata I Nyoman Budiastra I Nyoman Candra Erawan I Nyoman Cita Artawa I Nyoman Gunantara I Nyoman Setiawan I Nyoman Suprapta Winaya I Nyoman Susanta I Nyoman Sutarja I P. A. Edi Pramana I Putu Adi Wirajaya I Putu Andithya Chrisna Budi I Putu Dedi Wiriastika I Putu Juliawan I W. A. Wijaya I Wayan Arta Wijaya I Wayan Eka Prastia I Wayan Kharismata Mone Ede I Wayan Rinas I. G. G. B. Prabu Wisesa I. K. A. Wijaya I. K. Wijaya I. W. Dhanan Arieyasa I.A. Dwi Giriantar I.B.G. Manuaba I.G. Surya Subaga I.N. Setiawan I.P. Dika Putra Ariantika I.P.A. Wiranata I.W.A Wijaya Ian Rahmadi Kurniawan IBG Manuaba Ida Ayu Dwi Giriantari Ida Bagus A. Swamardika Ida Bagus Gde Primayatna Igo Ari Syahputra Indra Baskara Intan Aprilia Medina Irene Trivania Jonathan Oliver Ken Joni Wijaya Fathoni Julius Mahendra Sihombing Juniastra Gina K. Cakrawenda Yoga Laksana K.Amerta Yasa K.H. Priadi Kadek Agus Nata Riadnyana Kadek Bayu Kusuma Ketut Gd Riski Dalem Mahotama Kholid Hidayatullah Komang Bagus Dwi Widiatama Putra komang jaryanta aryamantara Kresna Hadi Wijaya Kumara, I N. S. Kumara, I. N. S. l Gusti Ngurah Janardana Lie Jasa M.K. Huda Made Satria Tresnajaya Margareta Yuniari Martin Luhut Ariberthson Sihaloho Mawadah Wr Febriyani Miguel Nazario Muhammad Ainnur Rafdiansyah N. A. Kartono N. M. G. A. Krisnayani N. W. Sindi N.W. Budiantari Nasrul Faisal Neysa Amelia Hutagalung Ngakan Putu Satriya Utama Ngurah Indra ER Nurwijayanti Nyoman Ananda Tri Utami Nyoman S Kumara P A Mertasana Pande Ketut Sudiarta Poppy Diana Sari Pratolo Rahardjo R. S. Hartati R.S. Hartati Rahmah Utami Budiandari Reki Aji Saputra Richard Antony Suatan Rukmi Sari Hartati Rukmi Sari Hartati Sahabat Nazara Salman Al Farisi Sani Renartha Kusuma Santiari, D. A. S. Sari, N. P. A. R. Sembiring, Rinawati Setiawan, I N. Setiawan, I. N. Sinaga, P. M. Solly Aryza Surung Rafael Sihaloho Suryo Aji Wicaksono Syamsudduha Syahrorini Tjok Gede Indra Partha Tom Gerraldo Salomo Situmeang Virgunia, D. A. W. G Ariastina W. G. Ariastana Wahyudi Ernest Putra Wayan Agus Adi Widiastra Wayan Gede Ariastina Widianto, I. G. A. Yoga Kusuma Wardhana Yohanes Made Arie Prawira