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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) International Journal of Reconfigurable and Embedded Systems (IJRES) Transmisi: Jurnal Ilmiah Teknik Elektro Jurnal Teknik Elektro TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Ilmiah Dinamika Rekayasa (DINAREK) JTERA (Jurnal Teknologi Rekayasa) TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol KURVATEK Jurnal Pendidikan dan Teknologi Indonesia Jurnal Pengabdian Masyarakat Indonesia Jurnal Nasional Teknik Elektro dan Teknologi Informasi Jurnal Rekayasa elektrika
Winasis Winasis
Teknik Elektro, Universitas Jenderal Soedirman, Indonesia
Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Public Health Social Sciences

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Optimasi Operasi Pembangkit Listrik Tenaga Air (PLTA) Menggunakan Linear Programming Dengan Batasan Ketersediaan Air Winasis Winasis; Hari Prasetijo; Giri Angga Setia
Dinamika Rekayasa Vol 9, No 2 (2013): Jurnal Ilmiah Dinamika Rekayasa - Agustus 2013
Publisher : Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.dr.2013.9.2.67

Abstract

One of hydro power plant operational problem is how to maximize available water resouces to gather optimal electric power generation. Water availability which is limited and can be stored in a reservoir will influence electrical energy generated by the plant. This paper present a new approach of short term optimization of hydro power plant operation. The objective function is to maximize energy which is produced by power plant on scheduling operation period, with consider water resource availability in reservoir as operational constraint. The optimization problem is formulated in Linear Programming Method, in which this method is a commonly used to solve optimization problem in hydro power plant. Based on simulation results on Ketenger Hydro Power Plant using water flow data on June 1st 2013 shows that this method can be used to solve hydro power plant operation optimization problem well. Electrical energy as main objective function is maximized and all prevailing constrain is satisfied. On this short term operation (24 hour) simulation, total energy can be produced is 96121,55 kWh, or 1427 kWh (1,51%) greater comparing with real generation condition with 96694 kWh.
Optimalisasi Pembangkitan Energi Listrik PLTA Jatiluhur Menggunakan Pemrograman Linier Giri Angga Setia; Rafly Sulthan Mahdy; Winasis Winasis; Hari Prasetijo
JTERA (Jurnal Teknologi Rekayasa) Vol 6, No 2: December 2021
Publisher : Politeknik Sukabumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31544/jtera.v6.i2.2021.313-320

Abstract

Permintaan energi listrik yang semakin meningkat berakibat pada meningkatknya kebutuhan terhadap pembangkit sebagai penyedia energi listrik. Salah satu sumber potensi energi listrik terbesar yang dimiliki Indonesia adalah energi air. Pemanfaatan air yang tepat sebagai sumber energi listrik pada pembangkit listrik tenaga air (PLTA) merupakan tugas penting terutama pada PLTA yang menggunakan reservoir. Beberapa kendala yang dihadapi PLTA tersebut mengacu pada ketersedian air dan kapasitas pembangkitannya. Dengan demikian optimasi pada PLTA perlu dilakukan untuk menghadapi masalah tersebut. Optimasi yang dilakukan pada penelitian ini menggunakan data debit PLTA Jatiluhur selama bulan Mei 2020. Metode optimasi pemrograman linier digunakan sebagai solusi terhadap permasalahan operasional pembangkitan daya pada penelitian ini. Fungsi objektif dari optimasi ini adalah untuk memaksimalkan pembangkitan energi listrik unit generator. Adapaun fungsi kendalanya yaitu dengan mempertimbangkan ketersediaan air dan kapasitas pembangkitan. Hasil perhitungan dalam periode operasi satu bulan menunjukkan bahwa PLTA berpotensi memproduksi energi listrik lebih besar 11,14% dibandingkan kondisi existing atau dengan selisih 7.938,6 MWh. Selain itu rata-rata efisiensi mengalami kenaikan sebesar 0,7%. Dengan demikian hasil tersebut dapat mengindikasikan bahwa implementasi metode pemrograman linier berjalan baik dan efektif dalam memecahkan masalah operasi pembangkitan daya PLTA.
Optimalisasi Jangka Menengah PLTA Memperhatikan Ketersediaan Air Menggunakan Linear Programming Winasis; Hari Prasetijo; Giri Angga Setia
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 3 No 2: Mei 2014
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (250.636 KB)

Abstract

Hydro power plant is kind of electric power generation which utilize energy from water fall to produce electricity. One of its operational problem is limited water supply and available water which can be stored in reservoir. This limitation will affect the electrical energy can be generated by the hydro power plant. This paper present a methodology of medium term optimization of hydro power plant operation to maximize its energy production with considering water availability in reservoir as operational constraint. Operation optimization problem is formulated in Linear Programming model and then solved using Tomlab optimization software. Simulations using water flow data of Ketenger Hydro Power Plant on June 2013 show that this method can be used to solve hydro power plant operation optimization problem well. Based on the simulation results with a period of 720 hours (1 month) the total electrical energy that can be generated is equal to 2990.8 MWh. This value is 69,6 MWh (or 2,3%) greater when compared to the real condition of electrical power generated in June with ammount of 2921,2 MWh.
Perancangan dan Analisis Tekno Ekonomi PLTH Diesel Generator-Photovoltaic Menggunakan Homer Di Pulau Sambu, Kepulauan Riau Bagus Karnanto; Winasis Winasis; Yogi Ramadhani
Jurnal Pendidikan dan Teknologi Indonesia Vol 3 No 5 (2023): JPTI - Mei 2023
Publisher : CV Infinite Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jpti.289

Abstract

Pembangkit listrik tenaga hybrid (PLTH) merupakan salah satu solusi untuk mengurangi ketergantungan bahan bakar minyak. PLTH ini memiliki cara kerja yaitu mengintegrasikan dua atau lebih pembangkit listrik. Penelitian ini bertujuan untuk melakukan perancangan untuk mengintegrasikan antara dua pembangkit listrik yaitu pembangkit listrik tenaga surya (PLTS) dengan pembangkit listrik tenaga diesel (PLTD). PLTD pada Pulau Sambu beroperasi selama 24 jam. Dengan pengoperasian PLTD yang bekerja 24 jam tersebut, maka biaya bahan bakar yang dikeluarkan untuk menggerakan PLTD tersebut cukup mahal. Sehingga hasil yang diperoleh dari penellitian ini dapat mengurangi konsumsi biaya bahan bakar PLTD tersebut dan juga dapat mengurangi pengoperasian PLTD yang akan membuat umur dari PLTD tersebut semakin lama. Penelitian ini menggunakan metode perancangan dan analisis tekno ekonomi dengan aplikasi Homer. Hasil penelitian memperoleh hasil desain PLTH di pulau Sambu dengan spesifikasi dan analisis energi yaitu Daya PLTS yang akan terpasang pada Pulau Sambu sebesar 833 kWp, Energi yang dihasilkan PLTH dalam setahun sebesar 3.059.065 kWh menggunakan PLTD dengan kapasitas 2180 kW, menggunakan ukuran Baterai sebesar 1200 kWh, dan PCS PLTH berukuran sebesar 368 kW. Sementara itu analisis ekonomi menunjukan Biaya rata-rata energi listrik per kWh yang dihasilkan PLTH ini sebesar Rp3.710/kWh, Biaya investasi awal PLTH sebesar Rp10.465.295.346, biaya operation dan maintenance PLTH sebesar Rp 359.928.891, Potensi saving PLTD PLTH sebesar Rp4.059.730.570/tahun, Payback period PLTH sebesar 2.5 tahun.
Desain Sistem Monitoring Sistem Photovoltaic Berbasis Internet of Things (IoT) Winasis; Azis Wisnu Widhi Nugraha; Imron Rosyadi; Fajar Surya Tri Nugroho
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 5 No 4: November 2016
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1058.033 KB)

Abstract

Photovoltaic (PV) system is an alternative solution to provide electricity at rural area. A common implementation problem at rural area is the PV power plant cannot be monitored continuously. This research proposes wireless node for PV power plant monitoring based on Internet of Things (IoT). Wireless node is aimed for monitoring electrical parameter from the PV and environmental parameter (temperature and solar radiation). Measured parameters are sent to the cloud database to be accessible via the internet. The device consist of a sensor module, signal processing module and wireless transceiver module. Wireless transceiver module is an ESP8266 for connection to the IoT gateway and to the internet. Unidirectional ACS758 is used for current sensing, which give a reading error of 0.091 Ampere. For voltage sensing, a voltage divider is used. It has a reading error of 0.063 Volt. DHT22 is used for temperature sensing. Its reading error is 0.0097 °C. The radiation sensor has a reading error of 0.3 W/m2. Proposed design has been tested at Laboratorium of Energy Convertion, Electrical Engineering Department, UNSOED, on 300Wp PV system. This device provides reliable monitoring data transmission with average and deviation in delivery time consecutively 57 seconds and 2 seconds.
Pemanfaatan Potensi Daya Listrik Dan Instalasi Turbin-Generator Pembangkit Listrik Tenaga Pikohidro Hari Prasetijo; Widhiatmoko Herry Purnomo; Suroso Suroso; Winasis Winasis; Mulki Indana Zulfa
Jurnal Pengabdian Masyarakat Indonesia Vol 3 No 4 (2023): JPMI - Agustus 2023
Publisher : CV Infinite Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jpmi.1418

Abstract

Kebijakan Energi Nasional 2014 dan Rencana Umum Energi Nasional 2017 merupakan komitmen pemerintah dalam pengembangan potensi energi baru dan terbarukan di Indonesia.  Kebijakan tersebut berupaya memaksimalkan penggunaan energi bersih/terbarukan diantaranya energi air. Kegiatan pengabdian masyarakat ini merupakan bagian upaya pemanfaatan energi air dengan tujuan menghitung potensi daya listrik dan membuat komponen mekanikal elektrikal untuk memanfaatkan potensi daya potensial air menjadi daya listrik. Lokasi kegiatan adalah di Plawetan RT 07 RW 03 Desa Watuagung Kecamatan Tambak Kabupaten Banyumas dengan memanfaatkan salah satu beda elevasi aliran sungai curug. Pengukuran yang dilakukan mendapatkan elevasi 1 meter dan debit 0,1 m3/s dengan potensi daya listrik sekitar 600 watt. Identifikasi potensi daya tersebut digunakan sebagai dasar pemilihan generator dan pembuatan turbin untuk dipasang pada rumah pembangkit. Metode yang digunakan adalah : (1) pengukuran debit aliran sungai (2) pengukuran tinggi jatuh (head) pada lokasi rumah pembangkit (3) perhitungan potensi daya listrik, (4) pembuatan turbin (5) pemasangan turbin-generator di rumah pembangkit.  Hasil yang dicapai dari kegiatan ini adalah : pembuatan rumah pembangkit, turbin dan pemasangan turbin-generator berdasar potensi energi air. Hasil pemasangan turbin generator pada rumah pembangkit ini, merupakan tahap pertama yang akan dilanjutkan dengan tahap kedua berupa pembangunan bendung saluran air, penstock dan distribusi listrik sebagai penerangan jalan.
Analisis Sistem Photovoltaic Beban Arus Searah Terhubung Jala PLN dengan Penyearah Terkendali Winasis Winasis; Muhammad Syaiful Aliim
Jurnal Rekayasa Elektrika Vol 16, No 2 (2020)
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17529/jre.v16i2.15698

Abstract

Photovoltaic (PV) systems can be connected to the utility grid to ensure the reliability and continuity of the electrical energy supply. Although the output of the PV modules and many electrical loads are direct current (DC), most grid connected PV systems use alternating current (AC) grid through the inverter. This study presents an analysis of DC microgrid PV system connected to PLN utility grid using controlled rectifier. The controlled rectifier circuit uses a thyristor which can be controlled at its ignition angle to regulate the output voltage and current supplied from utility. The proposed PV system configuration simulations are performed using PSIM software. The system supplies resistive loads in the form of DC lights. Simulations are carried out with variations in load resistance and the thytistor ignition angle. The simulation results show the rectifier circuit has a voltage ripple of 1.57 V (6.47%). While the efficiency of the system under various loading conditions and ignition angle varies between 95.08%–97.72%. The highest system efficiency is obtained under high thyristor ignition conditions.
Power converter for battery charger of electric vehicle with controllable charging current Suroso, Suroso; Prasetijo, Hari; Winasis, Winasis; Siswantoro, Hari; Nugroho, Daru Tri; Utomo, Wahyu Mulyo; Abu Bakar, Afarulrazi
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 15, No 2: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v15.i2.pp968-977

Abstract

Research on electric vehicle chargers primarily focuses on improving charging technology to enhance the convenience, quality, efficiency, and affordability of charging electric vehicles. This paper discusses a different AC-DC power converter topology proposed as a potential candidate for electric vehicle battery charger. Using the proposed converter circuit, the charging process of electric vehicle battery can be simply adjusted to meet the battery requirement, and even for increasing the charging speed while avoiding overcharging of battery. During the charging process, if the voltage of battery approaches to the targeted battery voltage level, the charging current can be reduced gradually to zero. Hence it will prevent the battery from overcharging condition. Moreover, the ability of working at high power factor operation, low distortion of alternating current (AC) input current, and low direct current (DC) output current ripple are other features of the proposed charger circuits. Some test results of the proposed power converter were presented. The test results revealed potential features of the converter for battery charger of electric vehicle with power factor 0.9996, total harmonic distortion (THD) of AC current 2.73%, and low charging current ripple, i.e. 3.91%. Therefore, it minimizes the negative effects caused by ripples of charging current especially for lithium-ion batteries widely used in electric vehicles.
DESIGN OF A CASCODE BIPOLAR JUNCTION TRANSISTOR (BJT) RADIO FREQUENCY (RF) AMPLIFIER CIRCUIT Wardhana, Arief Wisnu; Winasis, Winasis; Priswanto, Priswanto
Transmisi: Jurnal Ilmiah Teknik Elektro Vol 27, No 2 April (2025): TRANSMISI: Jurnal Ilmiah Teknik Elektro
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/transmisi.27.2.109-121

Abstract

The purpose of this research is to develop an audio   receiver amplifier circuit. The  amplifier consists of a cascode  amplifier which is turned into an  amplifier by adding two parallel  resonators. One parallel  resonator is placed at the input. Another parallel  circuit is used as a collector load. Parallel  circuit was employed because this device is intended for use only over a narrow frequency range. The tuned amplifier’s frequency was  734 . A spoiling resistor of magnitude was added in series with the tuned circuit’s inductor to reduce the sharpness of the resonant peak, resulting in a  bandwidth. The famous cascode configuration was employed to improve the high-frequency performance of this  amplifier. The Multisim simulation results of the circuit shows that it has performed according to the specification. It can be concluded that the designed circuit has successfully carried out his duty, in that only the frequencies of interest within the bandwidth are amplified. The circuit has been able to selects a particular range of frequencies (from a lower frequency of  up to an upper frequency of ), and rejects the other undesired frequencies. Thus, giving the tuned amplifier a bandwidth of . The peak voltage was achieved at frequency of  . Furthermore, the cascode configuration employed has effectively eliminates the most trouble source of high-frequency loss – the input Miller capacitance.
Study of parallel operation single phase H-bridge CSI and H-bridge VSI Suroso, Suroso; Winasis, Winasis; Supriyanti, Retno
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 16, No 3: September 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v16.i3.pp1721-1730

Abstract

In some applications, parallel operation of some single-phase inverters with different characteristics is a necessity, such as in a photovoltaic power conversion system. Each power inverter with its power source works, delivering power to a common load which cannot be supplied by a single power inverter. This paper proposed a novel parallel operation of two different power inverter circuit types. H-bridge voltage source inverter (HB VSI) and H-bridge current source inverter (HB-CSI), supplying AC power to a common load. The proposed inverter system was examined and its operation characteristics were analyzed using computer simulation. Moreover, a laboratory prototype of the inverter system was made and examined to validate some principal characteristics of the inverter system experimentally. Test results showed that by combining the HB-VSI and HB CSI, a lower distortion of load current was achieved, specifically, total harmonic distortion (THD) of Iload was less than 1%. This phenomenon happens even the THD of AC currents generated by HB-VSI and HB-CSI at 6.95% and 6.18%, respectively.
Co-Authors Abu Bakar, Afarulrazi Agung Mubyarto Ahmad Khafidz Ambariyanto Ambariyanto Arief Wisnu Wardhana, Arief Wisnu Azis Wisnu Widhi Nugraha Bagus Karnanto Daru Tri Nugroho Daru Tri Nugroho Fajar Surya Tri Nugroho Giri Angga Setia Hari Prasetijo Hari Prasetijo Hari Prasetijo Hari Siswantoro Hari Siswantoro, Hari Imron Rosyadi Muhammad Syaiful Aliim Mulki Indana Zulfa Nugroho, Fajar Surya Tri Prasetyo, Rifqi Sufyan Priswanto Priswanto Priswanto Priswanto, Priswanto Purnomo, Widhiatmoko Herry Purwanto Bekti Santoso, Purwanto Bekti Rafly Sulthan Mahdy Retno Supriyanti Rosyadi, Imron Sarjiya Satria Ardhi Permana Sebastian Adi Prakoso Sholikhah Sholikhah Suroso Suroso Suroso Suroso Suroso Suroso Suroso Suroso Suroso Suroso Toshihiko Noguchi Wahyu Mulyo Utomo Wahyu Tri Cahyanto Widhiatmoko Herry Purnomo Yanuar Haryanto Yogi Ramadhani