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RANCANG BANGUN CONTROLLER BLDC BERBASIS MIKROKONTROLER STM32 BLUE PILL PADA KENDARAAN LISTRIK URBAN AGNIJAYA WEIMANA Mas Nyoman Ngadeg A. C.; I Nyoman Satya Kumara; I Putu Elba Duta Nugraha
Jurnal SPEKTRUM Vol 9 No 3 (2022): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1103.84 KB) | DOI: 10.24843/SPEKTRUM.2022.v09.i03.p7

Abstract

The increase in the consumption of fuel oil causes the depletion of fossil fuel reserves. One alternative energy solution that can be utilized is electrical energy. One of the efforts to overcome the energy crisis can be realized in a creativity in the energy efficient car contest (KMHE). The Weimana Team of Udayana University participated in the urban concept category of electric motor drive under the name Agnijaya Vehicle. One important aspect in order to be able to compete and win the competition is the Motor Controller. In this paper, the results of the research are presented on a design of a Brushless DC Motor Controller based on the STM32 Blue Pill microcontroller and used to rotate the BLDC motor on the Agnijaya Weimana Urban Electric Vehicle. The specifications of the BLDC controller design are made to have a power dissipation inverter with a power of 1980 Watt connected to an 800 Watt sensored BLDC motor. The STM32 Blue Pill microcontroller-based Brushless DC Motor Controller has been successfully designed and manufactured and produces a sinusoidal output waveform containing switching noise when connected to a no-load BLDC motor. The performance to drive Agnijaya Wimana's Urban Electric Vehicle is capable of implementing a PWM duty cycle of up to 100% with an average current achievement of 24,775 Ampere, an average voltage drop of up to 48,485 VDC, an average power rating of up to 1200,5 Watt and a BLDC motor speed up to 419,5 RPM.
REVIEW RAGAM JENIS KAPAL PERIKANAN INDONESIA Bradley Axelius; I N. S. Kumara; W G. Ariastina
Jurnal SPEKTRUM Vol 9 No 3 (2022): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (308.522 KB) | DOI: 10.24843/SPEKTRUM.2022.v09.i03.p10

Abstract

Indonesia as a maritime country with 2.23 million people working in the marine sector, one of which is a fisherman. Fishermen are one part of the fishing unit that plays a very important role for the success of a fishing operation. This paper reviews the fleet of vessels used by fishermen in Indonesia. The research method is a literature study taken from books, papers, the internet, and other sources that can support. The results of the review show that in carrying out fishing activities, fishermen in Indonesia use traditional and modern boats or boats. Types of boats or ships are divided into several categories. Depending on the type of fishing gear such as purse seine, trawls, dredge net, lift net, gill net, pole and line, long line, tonda ship, jungkung, and based on the propulsion system and ship size divided into powered boat and non-powered boat. In the operation of the ship, electricity is supplied by generators or batteries or batteries. To drive the sailing ship, a motorized engine is used, which is divided into inboard and outboard engines based on the layout, and is categorized into marine diesel engines and marineized engines based on their design and designation. On the other hand, to optimize the production of potential fisheries resources owned by Indonesia, it is necessary to increase the number of ships. The fluctuating growth in the number of vessels from 2002 to 2016, with the largest number of vessels amounting to 815,544 units in 2014 has not been able to maximize production from this potential. The Indonesian shipbuilding industry has also not developed in line with the challenges it faces. Development is still lagging behind the capacity, potential, demands and demands of the market. As well as social organizations also have an important role to increase capture fisheries production by providing guidanceThe information presented is expected to help the interests of the community such as the central government, local governments, researchers, students, and anyone who is interested in supporting the field of fishing vessels in Indonesia, especially the application of solar power plants on fishing boats.
SURVEI BIAYA INVESTASI AWAL PLTS ATAP DI INDONESIA TAHUN 2022 I Putu Yudi Pramayasa; I Nyoman Satya Kumara; I Nyoman Setiawan
Jurnal SPEKTRUM Vol 9 No 3 (2022): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (403.392 KB) | DOI: 10.24843/SPEKTRUM.2022.v09.i03.p11

Abstract

The slow development of New and Renewable Energy such as solar energy in Indonesia are influenced by land acquisition and the high initial investment costs, but lately the cost of solar power plant development prices has been decreasing globally year by year. This research will review the development of PV mini-grid investment costs in Indonesia and this information can be used as a source of information for stakeholders to understand the development of PV mini-grid prices in 2022. The price of the solar power plant construction was obtained through a survey from the e-commerce website. From the survey, 55 data has been obtained related to the price of solar power plant rooftop construction in Indonesia with a capacity scale of 1 KWp to 10 KWp with price range from Rp. 14,000,000 to Rp. 207,000,000. The average initial investment cost for the construction of a PLTS Roof in Indonesia with a capacity of <2 KWp is Rp. 22,954,000, <3 KWp is Rp. 42.838.000, <4 KWp is Rp. 60,716,000, <5 KWp is Rp. 64,473,000, <6 KWp is Rp. 82,986,000, 6 KWp is Rp. 102,380,000, 7 KWp is Rp. 117,580,000, 8 KWp is Rp. 140,980,000, 9 KWp is Rp. 156.580.000, and 10 KWp is Rp. 151,820,000.
ANALISIS PENGARUH VARIASI DEBIT AIR TERHADAP KECEPATAN PUTARAN TURBIN CROSSFLOW PADA PEMBANGKIT LISTRIK TENAGA MIKROHIDRO N. A. Kartono; C. G. Indra Partha; W. G. Ariastina; I. A. D. Giriantari; I N. Satya Kumara; I W. Sukerayasa
Jurnal SPEKTRUM Vol 10 No 2 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i02.p6

Abstract

The Yeh Dikis River in Tabanan Regency Bali has a natural environment which is considered suitable to be used as a tourism destination. The factor that supports the Yeh Dikis River to become a tourism object is the river's potential to generate electricity. In this paper, a particular turbine for micro-hydro power plant is designed. The Yeh Dikis River has a water discharge of 0.381 m3/s with a head value of 8.2 meters, with a potential output power of 18.15 kW. The value of the water discharge and the output power are used to determine the type of turbine used. The computation and simulation showed that the crossflow turbine is suitable for the power plant. The analysis showed that a water discharge of 0.381 m3/s with a penstock diameter of 0.44 meters produces a specific rotational speed of 186 rpm; while a water discharge of 0.381 m3/s with a penstock diameter of 0.55 meters produces a turbine specification rotation speed of 160 rpm. This indicated that the effective head value affects the determination of the penstock diameter and the water velocity. The smaller diameter of the penstock produces, the higher the velocity of the water flow in the pipe. A low effective head will result in a low specific rotational speed. It was found that the optimum turbine power output for a water discharge of 0.381 m3/s with a penstock diameter of 0.44 meters is 18.15 kW. The work of the crossflow turbine is validated using a turbine simulator to determine the rotational speed of the turbine for a particular torque.
STUDI PENGURANGAN EMISI KARBON SISTEM KETENAGALISTRIKAN PROVINSI BALI: ANALISIS RUPTL 2021-2030 Aditya Perdana Putra Purnomo; Ida Ayu Dwi Giriantari; I Nyoman Satya Kumara
Jurnal SPEKTRUM Vol 10 No 3 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i03.p1

Abstract

Indonesia's Nationally Determined Contribution (NDC) targets a 19 to 27% reduction in greenhouse gas (GHG) emissions from the energy sector compared to the business-as-usual scenario. Assuming this target applies uniformly to all provinces in Indonesia, including the power sector, a modeling analysis of Bali's power system is conducted to assess GHG emission reductions. Two scenarios are developed in the Low Emissions Analysis Platform (LEAP) to evaluate the future deployment of Bali's power system. The Business-As-Usual (BaU) scenario serves as the baseline for emission reduction in other scenarios and assumes the development of Bali's power system without emission reduction interventions. The RUPTL scenario assumes the continued development of Bali's power system in line with the electricity development plan document. Results show that the RUPTL scenario achieves a 20.89% reduction in emissions, which fulfills the regional assumption of a 19% NDC target. However, it falls short of achieving the 2030 target of 27% emission reduction.
PERBANDINGAN METODE KLASIFIKASI SUPPORT VECTOR MACHINE DAN NAÏVE BAYES PADA ANALISIS SENTIMEN KENDARAAN LISTRIK Ni Wayan Ernawati; I Nyoman Satya Kumara; Widyadi Setiawan
Jurnal SPEKTRUM Vol 10 No 3 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i03.p12

Abstract

Electric vehicles are one of the solutions that can be used to deal with the problem of greenhouse gas emissions. Switching to electric vehicles can be an effective solution because electric vehicles have many advantages. However, the acceptance of electric vehicles in Indonesia depends on the opinions or sentiments given by the community. Sentiment analysis can provide a specific picture of how the sentiment or opinion given by the Indonesian people towards electric vehicles. The sentiment analysis process is carried out using the Python programming language. This research compares SVM and Naïve Bayes methods in sentiment analysis in terms of accuracy and time efficiency. A total of 717 data were used as test data and SVM correctly classified 150 negative data, 152 neutral data, and 277 positive data. Meanwhile, Naïve Bayes correctly classified 166 negative data, 143 neutral data, and 282 positive data. training time required for the SVM method is 37.42 seconds while Naïve Bayes is 0.10 seconds. Naïve Bayes is the best method in this study because of its high accuracy and fast training time.
PERANCANGAN SISTEM POMPA AIR SUNGAI YEH HA UNTUK MEMENUHI KEBUTUHAN AIR MASYARAKAT DESA ABABI Derren, M.; Ariastina, W. G.; Setiawan, I N.; Giriantari, I. A. D.; Sukerayasa, I W.; Satya Kumara, I N.
Jurnal SPEKTRUM Vol 11 No 2 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

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Abstract

Kayuan Yeh Ha serves as a clean water source located in Ababi Village, Karangasem Regency. The flow from Kayuan Yeh Ha is utilized for both bathing dan consumption by the surrounding residents. Originating from the Yeh Ha spring, Kayuan Yeh Ha is extensively utilized to fulfill the needs of the local community. In order to meet the water requirements of the local populace, a water storage tank with a capacity of 58.74 m3 was initially established to distribute water to 10 households. In the year 2020, a water wheel was employed to power a mechanical pump without electricity to fill the storage tank. After operating for one year, the water wheel experienced shaft damage, necessitating its replacement with a hydraulic ram pump. However, the hydraulic ram pump only utilizes one-fifth of the available water flow, thereby rendering it less effective. Consequently, this research aims to design an electric water pump system powered by a new renewable energy source. The implementation of this electric water pump is expected to enhance the efficiency of filling the storage tank. Based on measurements dan calculations, the micro-hydro power plant system (PLTMH) is estimated to produce a power output of 6kW. Pump selection is determined by electrical power calculations, water discharge, dan pump prices, leading to the adoption of the Pedrollo F50-160B centrifugal pump capable of delivering a water discharge of 56m3/hour at a head of 25 meters. The Pedrollo F50-160 pump utilizes a 3-phase squirrel cage induction motor generating a power output of 5.5kW. Pipe losses dan fittings are also calculated using Pipeflow Expert software, resulting in a water discharge of 31.687 m3/hour. The pump will be operated at maximum capacity for 24 hours, enabling it to deliver a water discharge of 763,620 m3/day, sufficient to meet the clean water needs of 12,277 individuals or 2,455 families. Achieving this water usage target also necessitates piping to households from the storage tank, totaling 35,900 meters in length with an 80mm diameter dan 49,100 meters of 16mm diameter piping. This system is also equipped with a variable frequency drive or inverter device to enhance the efficiency of the electric pump dan reduce starting current surges, simulated for its performance through Simulink software.
POTENSI PENGHEMATAN BIAYA TAGIHAN LISTRIK PASCA PEMASANGAN PLTS ATAP GEDUNG RUSUNAWA UNIVERSITAS UDAYANA Widiandika Putra, I Wayan Dicky; Ariastina, Wayan Gede; Dwi Giriantari, Ida Ayu; Setiawan, I Nyoman; Sukerayasa, I Wayan; Satya Kumara, I Nyoman
Jurnal SPEKTRUM Vol 10 No 4 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i04.p12

Abstract

The limited availability of natural resources and the impact on the environment that regularly using fossil-based electricity become the basis for the government to develop renewable energy. One of the potential uses of renewable energy in Indonesia is a rooftop solar power plant which in its design does not require a large area of land and space for the placement of solar modules. This research designing rooftop solar power plants with an on-grid system on the Udayana University Rusunawa building with the capacity scenario of 20 kWp, 15 kWp, and 10 kWp using HelioScope. Based on the results of rooftop solar power plants production can be seen the potential cost savings of electricity bills each year. Based on the results of the design for rooftop solar power plants scenario, the number of solar modules obtained is 40 pieces, 30 pieces and 20 pieces with potential savings in electricity bill costs of Rp. 33.391.515, Rp. 28.933.478 and Rp. 23.269.285 per year.
SIMULASI INTERKONEKSI PLTS APUNG DI DANAU BATUR DENGAN PENYULANG KINTAMANI Jaya Kusuma, I Kadek Bagus; Satya Kumara, I Nyoman; Setiawan, I Nyoman
Jurnal SPEKTRUM Vol 10 No 4 (2023): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/SPEKTRUM.2023.v10.i04.p35

Abstract

Lake Batur has the potential to build a floating solar power plant to improve voltage drop disturbances. The author uses three scenarios using power flow analysis and transient analysis for each scenario in Kintamani. Scenario 1 with a floating solar power plant capacity of 10 MW has a positive impact by increasing the busbar voltage value but there are reverse power conditions that can disrupt the power system at the Payangan Substation. Scenario 2 with a floating PLTS capacity of 1.2 MW has a positive impact by increasing the voltage value and does not cause reverse power at Payangan Substation. Scenario 3 with a floating PLTS capacity of 3 MW has a positive impact by being able to increase the voltage value and does not result in reverse power at Payangan GI. When the floating solar power plant loses power production, it causes a decrease in voltage value, then the system stabilizes again.
SIMULASI DAN ANALISIS DAMPAK PLTS SKALA BESAR DAN BESS TERHADAP SUSUT DAYA SISTEM KELISTRIKAN NUSA PENIDA Caesar, B; Kumara, INS; Sukerayasa, IW; Giriantari, IAD; Setiawan, IN; Ariastina, WG
Jurnal SPEKTRUM Vol 11 No 2 (2024): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

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Abstract

Nusa Penida island is one of the famous tourist destinations in the province of Bali. Increased tourism activities on Nusa Penida island has led to an increase in demand for electricity. In response, PT. PLN (Persero) has made great efforts to improve the quality of the power supply system in Nusa Penida to meet the increasing energy demand. As a concrete step, PT. PLN (Persero) has established a 4,2 MWp Solar Power Plant (PLTS) and a 1,84 MWh Battery Energy Storage System (BESS) to provide electrical energy to Nusa Penida. This research aims to analyze the impact of PLTS and BESS on power losses in the electrical power supply system in Nusa Penida. The electrical system of Nusa Penida simulated using the demo version of the power system dynamics simulation software. The simulation electrical system of Nusa Penida conducted under four different conditions. The results of the simulation show that both PLTS and BESS have a positive impact on power loss of electrical system in Nusa Penida.
Co-Authors A. A. Ngurah Bagus Budi Nathawibawa A. Ibi Weking A. Jagad Miftahul Rizqy A.A. Gede Ari Pawitra Putra Abid Surya Bimantara Abinanda , IKPT Adhi Permana Aditya Perdana Putra Purnomo Adyana Putra, I Kadek Agus Mahardiananta, I Made Agus Satrya Wibawa Agus Selamet Duniaji Aldy Allan Ghozali Amanda Saraswati, Ni Putu Amien Harist Hardiansyah Ariastina, WG Aries Arimbawa Asep Andang Bayu Widiarsa Kadek Bradley Axelius C. G. Indra Partha Caesar, B Cecep Yudhie Rachmat D. Sitompul D.C. Khrisne D.Y. Manurung Darmawan, I Gede Hadi Derren, M. Dewa Nyoman Tri Budiantara Dewa Putu Ari Laksana Dharmawan, I Made Diky Dwi Girantari, Ida Ayu Dwi Giriantari , Ida Ayu Eka Yulia Indri Christanti Fajar Tri Prabowo Giusna Dipankara Kusnandar Govinda Riawan H. Kristiawan Harahap, RS Hardiansyah, Amien Harist Hasan Dedy Sudono Hendri Noviyanto Pratama I Dewa Gde Yaya Putra Pratama I Gde Ari Biantara I Gede Civavisna Brahma I Gede Dyana Arjana I Gede Hadi Darmawan I Gst Agung Putu Raka Agung I Gusti Agung Putu Raka Agung, I Gusti Agung Putu I Gusti Agung Putu, Raka Agung I Gusti Made Ngurah Desnanjaya I K Agus Setiawan I Kadek Hendy Wijaya I ketut Gede Darma Putra I Ketut Wiryajati I Made Aditya Nugraha I Made Arsa Suyadnya I Made Dwi Jendra Sulastra I Made Ginarsa I Nyoman Budiastra I Nyoman Budiastra I Nyoman Setiawan I Nyoman Setiawan I Nyoman Yudiyana I Pt Agus Surya Adi P I Putu Elba Duta Nugraha I Putu Gde Weda Setyawan I Putu Gede Budisanjaya I Putu Gede Iwan Dwipayana I Putu Indra Saputra I Putu Yudi Pramayasa I W.Y.M. Wiguna I Wayan Indrayana, I Wayan I Wayan Sukerayasa I Wayan Sukerayasa i wayan swi putra I Wayan Swi Putra I. M. R. A Anantajaya I. P. Dharmawan I.G.A.B. Adiputra I.G.A.D. Sasmita I.G.W. Artana I.N. Setiawan I.P.A. Wiranata I.W.B. Darmawan I.W.G.A Anggara Ida Ayu Dwi Giriantari Ida Ayu Putu Febri Imawati Ida Bagus A. Swamardika Ida Bagus Gede Manuaba Ida Bagus Gede Widnyana Putra Ida Bagus Ketut Sugirianta Ida Bagus Leo Mahadya Suta Ida Bagus Putra Setanu M Irwan Octopianus Silaban IW Gunarta J. Pangaribuan Jaya Kusuma, I Kadek Bagus Julius Mahendra Sihombing Kadek Hari Merta Kadek Sumariana Ketut Vidhia Kumara Komang Bagus Dwi Widiatama Putra Komang Oka Saputra Kresna Aditya, I Putu Gede Lely Meilina Lie Jasa Lintang Pramudya Luh Ayu Sutawati M.R. Wicaksana M.T. S.T. I Wayan Sutaya . Made Dwi Mulyawan Made Pradnyana Ambara, Made Pradnyana Made Puji Dwicaksana Made Sudarma Mas Nyoman Ngadeg A. C. Moch. Farhan Arieffadillah Muhamat, Oscar Muhammad Malik Al Falah Mustika Wiyasa, I Kd N. A. Kartono N. M. A. Wijaya N. Surya Gunawan Natapathy, Ranga Bayu Ngurah Indra ER Ni Luh Gede Pivin Suwirmayanti, S.Kom, MT, Ni Luh Gede Pivin Ni Made Ary Esta Dewi Wirastuti Ni Made Neli Lestari Ni Wayan Ernawati Ni Wayan Sri Ariyani NM Karmiathi NMAE Dewi Wirastuti Oswald Mangatur, Christian Oya Iman Sanjaya P.G.G. Priajana Paisal, Muhammad Pande K. B. Sutawan Partogi Manalu, Eli Musa Reja Pramudya, Lintang Pranipata, IND Purna Suartawan, Gede Purwania Ida Bagus Gede Putra Padang, Christian Felix Putu Martha Risnadinata R. Sapto Hendri Boedi Soesatyo Radha Kurniawan Raka Agung, I G A Putu Rosalia Hadi Rukmi Sari Hartati Rukmi Sari Hartati Sandrawati, Syafiatun Servinus Servinus Servinus, Servinus Setiawan, I N. Setiawan, IN Simon Junior Sinaga, P. M. Siregar, Jhon Septin Maourisdo Sudarma Made Sukerayasa, IW Surung Rafael Sihaloho Syamaidzar, Ahmad Luqyanto Tjok Gede Indra Partha Virgunia, D. A. W G. Ariastina W Widiadha Wayan Gede Ariastina Wayan Gede Ariastina Widagdo, Aris Widiandika Putra, I Wayan Dicky Widyadi Setiawan Windradharama W., A.A. G. Guna Wira Dharma, Gede Agus Wulandari, NKN Yoga Divayana Yogiswara Dharma Putra Yohana Fransisca Sarumpaet Yoppy Hartantio