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Speed Control Strategy for Three Phase Induction Machine Fed Inverter Base on Carrier Base Pulse Width Modulation (CBPWM) I Ketut Wiryajati; A.D Giriantari; Lie Jasa; I N. S. Kumara
International Journal of Engineering and Emerging Technology Vol 5 No 1 (2020): January - June
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJEET.2020.v05.i01.p05

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Abstract— An induction motors (IM) in many industries is used because it has several advantages, such as a very simple and strong construction, the price is relatively cheap, has good efficiency, power factor is quite good, and maintenance is easier. Besides the advantages of induction motors also have disadvantages, one disadvantage of induction motors is not being able to maintain a constant speed when there is a change in load. If the load changes, the speed of the induction motor will decrease. One method of regulating the speed of an induction motor presented in this study is the regulation of an induction motor using a carrier based PWM (CBPWM) inverter with the field oriented control (FOC) technique. The estimation of rotor rotation, torque and flux is done by carrier- based PWM technique which is given input voltage and stator current. To achieve the desired flux and torque, estimation is used as feedback in the control system. In this study, it will be simulated the induction motor speed regulation with a carrier base-based inverter using Matlab. The results obtained through simulation show the length of time to reach the reference speed for speeds of 1500 rpm and 1450 rpm is around 0.45 seconds. And THD average 2,675%.
Effect of Solvents on Natural Dyes Extraction from Mangosteen Waste for Dye Sensitized Solar Cell Application I Nyoman Setiawan; Ida Ayu Dwi Giriantari; Wayan Gede Ariastina; Ida Bagus Alit Swamardika
International Journal of Engineering and Emerging Technology Vol 3 No 2 (2018): July - December
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

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Abstract

Natural dyes are economically and environmentally superior to ruthenium-based dyes because they are cheap and non-toxic. In this study, natural dyes were extracted from mangosteen peel waste. Color extraction was carried out with three types of solvents (distilled water, methanol and ethanol) which had been acidified with 10% citric acid and with a ratio of material: solvent (1: 4, 1: 6, 1: 8 w / v). The photochemical properties are studied by UV-Vis spectrophotometer and FTIR spectroscopy. The absorption peak of the three types of solvent occurs at different wavelengths. The presence of carbonyl (C = O) and hydroxyl (OH) groups contained in anthocyanins can attach coloring to the surface of TiO2. Ethanol solvents with a ratio of 1: 8 produce the lowest photon energy at wavelength and absorption coefficient of 539.00 nm and 2,008 km-1 respectively. The lowest band gap of the dye helps electrons move rapidly from the valence band to the conduction band and only requires less energy for electron recombination which will increase the performance of the DSSC.
Solar PV Plant as a Replacement for Power Supply of Irrigation Water Pump I Made Agus Sastradiangga; Ida Ayu Dwi Giriantari; I Wayan Sukerayasa
International Journal of Engineering and Emerging Technology Vol 5 No 2 (2020): July - December
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJEET.2020.v05.i02.p23

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The southern side of Subak Babakan Yeh Kuning has an agricultural irrigation water shortage due to the dry season’s drought. In 2016, the Ministry of Public Works and Public Housing resolved that by giving diesel-powered irrigation water pump system and groundwater irrigation network, however the high operations cost resulted an abandonment of it. This study conducted a solar power plant design for submersible pumps at the southern side of Subak Babakan Yeh Kuning by calculating the amount of irrigation water needed, designing the solar power plant and the investment costs, and comparing the operations cost between the new and old system. Based on the design, the capacity of the solar power plant was set at 12,54 kWp using 33 solar module units and a 18,5 kW inverter unit. The pump could operate for 5 hours and 30 minutes on a sunny weather with a water discharge of 253 m3 or fulfill 17,5% of water needs for an area of 16-hectare. The investment costs of the solar power plant pump system were IDR 171.193.500. The operations cost of the new system (solar-powered) per hectare was IDR 6.495/day. Meanwhile, the operations cost of the old system (diesel-powered) per hectare was IDR 15.950/day.
STUDI POLA PENGELOLAAN ENERGI BIOGAS SEBAGAI ENERGI ALTERNATIF PADA KELOMPOK TERNAK DI DESA TUNJUK TABANAN I Wayan Raka Ardana; I.A.D Giriantari; Rukmi Sari Hartati
Logic : Jurnal Rancang Bangun dan Teknologi Vol 13 No 1 (2013): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

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Abstract

Teknologi biogas merupakan teknologi yang digunakan untuk mengolah limbah organik menjadi sumber energi terbarukan dalam bentuk gas bio. Gas bio dihasilkan dengan proses perombakan dan fermentasi bahan-bahan organik seperti kotoran ternak oleh mikroorganisme di dalam ruang kedap udara (digester). Biogas layak digunakan sebagai energi alternatif untuk memenuhi kebutuhan energi dalam kehidupan sehari-hari seperti energi panas untuk memasak, dan energi listrik. Kajian terhadap pengelolaan potensi biogas di Desa Tunjuk Tabanan dihasilkan biogas sebesar 40.644 m3/tahun dan Program Simantri 10 m3 per hari, dan pupuk organik padat 40 kg/hari, cair 20 lt/hari. Secara ekonomis berdampak pada pendapatan kelompok ternak per hari Rp. 97.600,- . Dari hasil analisis SWOT kelompok ternak program Simantri diperoleh alternatif strategi dan rancangan mekanisme untuk mengembangkan pengelolaan sistem biogas adalah : membenahi struktur organisasi dan pengelola, meningkatkan kualifikasi dan kinerja pengelola, meningkatkan sosialisasi dan permodalan, kerjasama dengan pihak lain.
ANALISIS SISTEM KELISTRIKAN PADA PEMBANGKIT LISTRIK TENAGA SURYA ON-GRID KAPASITAS 25 KWP DI BADAN PERENCANAAN PEMBANGUNAN DAERAH (BAPPEDA) PROVINSI BALI I Kadek Juniarta; I Nyoman Setiawan; Ida Ayu Dwi Giriantari
Jurnal SPEKTRUM Vol 9 No 1 (2022): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (697.08 KB) | DOI: 10.24843/SPEKTRUM.2022.v09.i01.p13

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In the 2020 fiscal year, the Ministry of Energy and Mineral Resources of the Republic ofIndonesia provided PLTS On-Grid grants to the Province of Bali as many as 10 PLTS locationsin Denpasar City. One of them is in the Regional Development Planning Agency (BAPPEDA) ofBali Province with an installed capacity of 25 kWp which is connected to the PLN network.BAPPEDA Bali is an example of the NRE Development Program and the Regional Medium-Term Development (RPJMD) that supports the PV mini-grid sector. This research wasconducted to determine the performance of the PLTS electrical system and to simulate theresults of PLTS production using Helioscope software so that it can compare the simulationresults of 2 scenarios with real conditions to determine the level of effectiveness in savingelectricity bills and the factors that influence the results of PLTS energy production. The resultsshowed that the potential for electrical energy generated for a year from the simulation ofScenario 1 and Scenario 2 was 38.90MWh and 39.07MWh. It is known that the real energyproduction from July to December 2021 is 18,083 kWh with the simulation results of scenario 1and scenario 2 from July to December 2021 which are 19,810 kWh and 20,015 kWh. Thedifference between real energy production and the simulation results in scenario 1 and scenario2 is 1,727kWh with a percentage of 8.72%, and 1,931kWh with a percentage of 9.65%. Thepercentage of savings obtained for 6 months in 2021 compared to 6 months in 2020 is 56.42%with a saving value of Rp. 18,783,953.
PEMANFAATAN PLTS 10 kWp TERPASANG UNTUK CATU DAYA POMPA AIR DI DESA BAN KARANGASEM Awgustus Patandean; I A Dwi Giriantari; Wayan Gede Ariastina
Jurnal SPEKTRUM Vol 9 No 2 (2022): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (450.132 KB) | DOI: 10.24843/SPEKTRUM.2022.v09.i02.p4

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There are 19 banjars considered as custom And 16 official banjars at Ban Village located in the Regency of Karangasem Bali. The people in Ban, especially who live at the village of Tempek Asti and the village of Manik Aji, have troubles to get the ccess of fresh water. As the result, they must take a longdistance walk and the condition is teribly dangerous. The village of Manik Aji has off-grid system powered by PLTS 10 kWp which was built in 2017 by the minister of source and energy of Indonesian Republic. It had done by Manpower Department and ESDM of Bali Province. In 2021, PLN (Indonesian Electric state) had designed to supply the electricity at Manik Aji village. Therefore,the installed PLTS was functioned as the source of electric support to fulfill the society's needs of tempek Asti Manik aji village. The water pump type is AC submersible Kepeida 4SMP3 26-2,2 kWp and 2.093,14 Wh of energy. The total head is 60,005 meter which the power needed 2,2 kWp and 2.093,14 Wh of energy so the water pump can operate for 3,5 hours with the water debit is 3 m3/h producing 10.000 litter of water and has fulfilled the water needs of society at tempek Asti Manik Aji village about 1.200 litter daily.
PERANCANGAN PLTS ATAP GEDUNG PERPUSTAKAAN UNIVERSITAS UDAYANA Marcelinus Anggiat Situmorang; Ida Ayu Dwi Giriantari; I Nyoman Setiawan
Jurnal SPEKTRUM Vol 9 No 2 (2022): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (796.913 KB) | DOI: 10.24843/SPEKTRUM.2022.v09.i02.p11

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Solar Rooftop PV is one solution in reducing CO2 emissions and the increasing consumption of electrical energy. Based on PP No.79 of 2014, Indonesia is committed to utilizing 23% of the total renewable energy of the total by 2025. In the General National Energy Plan (RUEN), in 2025 Indonesia targets the capacity of electrical energy from new and renewable energy of 45 GW of which solar power of 6.5 GW (14%). In this research, we will discuss the design of Solar Rooftop PV in the Udayana University Library building. Based on the helioscope simulation results, at a real angle of 20.6o and 20.3o solar modules that can be installed as many as 84 units with a power capacity of 28.1 kWp while at an optimum angle of 14.66o, as many as 66 solar modules can be installed with power capacity of 22.1 kWp. Based on the results of the HOMER simulation, the configuration between the real angle PV mini-grid and the grid is able to produce energy of 83,253 kWh/year with an emission reduction of 41.764%, while the configuration of the Solar Rooftop PV with the optimum installation angle with the grid is able to produce energy of 79.775 kWh/year with a reduction in emissions of 34.527%. From the results of the HOMER simulation, an economic analysis was carried out with an energy selling price of Rp. 900/kWh. The two Solar Rooftop PV designs are worth investing in where the Solar Rooftop PV design with a real installation angle of 20.6o and 20.3o is able to return the initial investment costs in the 17th year while the Solar Rooftop PV design with an optimum installation angle of 14.66o able to return the investment cost in the 20th year.
ANALISIS PENGHEMATAN BIAYA LISTRIK DI KANTOR DINAS KETENAGAKERJAAN DAN ESDM PROVINSI BALI PASCA TERPASANG PLTS ATAP 40 KWP I Kadek Adi Febriana Putra; Ida Ayu Dwi Giriantari; I Wayan Sukerayasa
Jurnal SPEKTRUM Vol 9 No 2 (2022): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (919.681 KB) | DOI: 10.24843/SPEKTRUM.2022.v09.i02.p16

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PLN's electricity sales in 2020 reached 234.5 TWh, while electricity consumption in Bali Province throughout 2020 was 4.9 TWh. In this study, PLTS roof supporting parking at the Office of the Manpower and ESDM Office of the Province of Bali is used as a location for installing PLTS in the use of new and renewable energy which has an impact on saving electricity bills and reducing CO? emissions. PLTS is installed with a total capacity of 40 kWp with an on grid configuration. Based on the research results, the simulation uses HelioScope software using two scenarios. In scenario 1 with an optimal inclination angle of 14.79°, the potential for energy production is 59.251,00 kWh/year, while in scenario 2 with an optimal tilt angle of 6.35°, the potential for energy production is 59.251,00 kWh/year. PLTS production from June to December 2021 is 35,287.90 kWh with savings on electricity bill costs of Rp. 67,640,740.00 and is able to reduce total CO? gas emissions by 27,233.33 kg CO?.
Operation Management Scenarios of Medium Voltage Distribution 20 kV with PV Rooftop Penetration Intan Aprilia Medina; I. A. Dwi Giriantari; W. G. Ariastina
Journal of Electrical, Electronics and Informatics Vol 6 No 1 (2022): JEEI (December 2022)
Publisher : Institute for Research and Community Services Udayana University

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Abstract

The availability of renewable energy in various sectors certainly needs to be improved, one of which is Solar Power Plant or PV. The province of Bali has a Solar Power Plant (PV) development target of 108 MW by 2025. The Solar Power Plant target has been stated in the RUEN (National Energy General Plan) policy. Efforts made by the Province of Bali to support and to realize the RUEN target are in the Bali Governor Regulation (Pergub) No. 45 of 2019 concerning "Clean Energy Bali". One of the areas in Bali that can be developed as a PV development is Nusa Dua area. In this area, the integration of conventional grid systems and renewable energy (PV Rooftop) can be carried out. In this journal, the author proposes several scenarios that are expected to be considered in planning the integration of a 20 kV grid system with renewable energy power plants. Some of these ideas are the integration of 25%, 50%, and 100% of PLTS capacity in meeting electrical energy needs. The purpose of the scenario is to find out the direction of the flow supplied by the PV, and to know whether the grid will remain stable or not if disturbance occurs.
STUDI PERFORMANCE PLTS ROOFTOP 3KWP FRAMELESS WITH ON-GRID SYSTEM DI LINGKUNGAN PERUMAHAN KORI NUANSA JIMBARAN Gede Agus Ryzky Martha; Ida Ayu Dwi Giriantari; I Wayan Sukerayasa
Jurnal Indonesia Sosial Sains Vol. 3 No. 02 (2022): Jurnal Indonesia Sosial Sains
Publisher : CV. Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (777.188 KB) | DOI: 10.59141/jiss.v3i02.523

Abstract

PLTS rooftop adalah perkembangan teknologi energi terbarukan yang mengkonversikan radiasi matahari menjadi energi listrik dengan sistem fotovoltaik. Bali memiliki karakteristik geografi dan demografi yang minim lahan luas, jumlah penduduk yang cukup besar dengan luasan atap bangunan yang memadai sehingga penggunaan PLTS rooftop dapat dimaksimalkan. Tujuan dari penelitian adalah untuk mengetahui performance PLTS dilihat dari kriteria produksi energi rata-rata selama 6 bulan dengan menggunakan metode analisa unjuk kerja dengan standar IEC 61724, Final Yield, Reference Yield dan Ratio Performance dengan menggunakan metode pengukuran riil dilapangan. Hasil penelitian pada pengukuran sudut kemiringan PLTS dengan Protractor Tool sebesar 18°dengan perhitungan sudut kemiringan optimal PLTS sebesar 14,66°. Radiasi rata-rata 4,39 hour dengan hasil energy yield (YF) 4.518,7 kWh/year, energy ideal (YR) 5.311,79 kWh/year  dengan  Performance  Ratio  (PR)  sebesar  85%. Hal ini telah sesuai dengan standar referensi PR (Performance Ratio) yang ada dimana range antara 70% hingga 90%. Hasil PR menunjukan performance daripada sistem PLTS  baik  karena berada diatas 70% sehingga layak dioperasikan selama 25 tahun atau dibawah 25 tahun.
Co-Authors Abinanda , IKPT Aditya Perdana Putra Purnomo Agus Ryzky Martha, Gede Agus Selamet Duniaji Ananta Mahanata, I Gusti Putu Ariastina, WG Awgustus Patandean Ayu Anggasari, Ni Luh Bagas Maruli Pangaribuan Baskara Formasakti Bhuana, I.G.A.T. C. G. Indra Partha Caesar, B Cecep Yudhie Rachmat D. A. S. Santiari Derren, M. Dewa Made Wiharta Dewa Nyoman Tri Budiantara Dewa Putu Ari Laksana Diva Aristia, Gusti Bagus Duman Care Khrisne Gallant Pradika Gede Agus Ryzky Martha H. Kristiawan Harahap, RS I G.N.A.B Rama Wahyu Dewangga I Gde Antha Kasmawan I Gde Ari Biantara I Gede Agus Januar Ariawan I Gede Civavisna Brahma I GN Dion Adiputra I Gusti Made Ngurah Desnanjaya I Gusti Ngurah Adhy Pradhana I Gusti Ngurah Winanda Wijaksana I Gusti Putu Mastawan Eka Putra I K. S. T. Lilayoga I Kadek Adi Darmadi I Kadek Adi Febriana Putra I Kadek Juniarta I ketut Gede Darma Putra I Ketut Jati I Ketut Wiryajati I Komang Ogik Parmana Putra I Komang Widi Astawa I Made Aditya Nugraha I Made Agus Sastradiangga I Made Anom Sutrisna Wijaya I Made Dwi Ardiada I Made Sankhya Pranata Adiguna I MADE SUDARMA I Made Wahyu Darmahesta I N Satya Kumara I N. A. P. Putra I N. S. Kumara I N. Setiawan I Nengah Widiana I NS Kumara I Nyoman Budiastra I Nyoman Cita Artawa I Nyoman Setiawan I Nyoman Setiawan I NYOMAN WIJAYA I Putu Adi Pradnyana Wibawa I Putu Andithya Chrisna Budi I Putu Arsikaputra I Putu Eka April Yanto I Putu Putrayana Wardana I W A WINARTA I Wayan Ambarayana I Wayan Arta Wijaya I Wayan Raka Ardana I Wayan Sukerayasa I Wayan Sukerayasa I Wayan Supartha I. K. G. D. Putra I. N. S. Kumara I. P. Krisna Darma Putra I. W. Sukerayasa, I. W. I.G.A.B. Adiputra I.G.A.D. Sasmita I.N.S. Kumara I.N.S. Kumara, I.N.S. I.W. Sukerayasa, I.W. I.W.G.A Anggara Ida Bagus A. Swamardika Ida Bagus Ketut Sugirianta IGA Andita Putra IGA Sri Melati Intan Aprilia Medina Intan Aprilia Medina Junivan Junivan Kadek Agus Nata Riadnyana Kadek Dwi Damarian Kavlin Rafhel Panjaitan Kenny Angel Manik komang jaryanta aryamantara Kumara, I N. S. Kumara, I. N. S. Laili Asdiyan Salsabila Ayu Leba, G. I. M. Lie Jasa Linawati Linawati Linawati Linawati Luh Ria Atmarani M Sudarma M. Sudarma M.R. Wicaksana M.T. S.T. I Wayan Sutaya . Made Aryawan Made Sudarma Made Sudarma Made Sumantera mahadi putra Marcelinus Anggiat Situmorang Margareta Yuniari Michael Candra Santoso N. A. Kartono N. M. G. A. Krisnayani N. W. Sindi Nadhif Dewayana, Zevardy Natapathy, Ranga Bayu NEVIATY PUTRI ZAMANI Ngakan Satria Utama Ngurah Indra ER Ni Made Neli Lestari Ni Made Wartini Norberto Soares Oya Iman Sanjaya P. M. Prihatini P.A. Sujana Partogi Manalu, Eli Musa Reja Poppy Diana Sari Pranipata, IND Purna Suartawan, Gede Putu Manik Prihatini Richard Antony Suatan Risky Aswi R, Risky Rukmi Sari Hartati Santiari, D. A. S. Setiawan, I N. Setiawan, I.N. Setiawan, IN Setiawan, Putu Ayu Citra Simon Junior Sinaga, P. M. Sugirianta, Ida Bagus Ketut Sukerayasa, IW Suriana, I Wayan Swamardika, IB. Alit Tjok Gede Indra Partha Virgunia, D. A. W. G Ariastina W.G. Ariastina Wahyudi Ernest Putra Wayan Gede Ariastina Wayan Gede Ariastina Widiandika Putra, I Wayan Dicky Widianto, I. G. A. Wira Dharma, Gede Agus Wulandari, NKN Yohanes Made Arie Prawira Yudha Anggara Putra Yusuf Firmansyah, Ahmad