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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) International Journal of Applied Power Engineering (IJAPE) TEKNIK Jurnal Teknik Elektro Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Seri Kajian Ilmiah ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika PROtek : Jurnal Ilmiah Teknik Elektro Sinkron : Jurnal dan Penelitian Teknik Informatika Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Jurnal Elektronika dan Telekomunikasi KACANEGARA Jurnal Pengabdian pada Masyarakat PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Journal of Robotics and Control (JRC) JTECS : Jurnal Sistem Telekomunikasi Elektronika Sistem Kontrol Power Sistem dan Komputer Jurnal INFOTEL
Leonardus Heru Pratomo
Seogijapranata Catholic University
Aerospace Engineering Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Public Health Social Sciences

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A new single DC source five-level buck-boost inverter for single phase application Pratomo, Leonardus Heru; Riyadi, Slamet; Tantyono, Neru Hatta
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 15, No 1: March 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijpeds.v15.i1.pp335-344

Abstract

Recent decades have seen an amazingly fast development of inverter topology, including multilevel inverters. This kind of inverter typically functions as a buck converter; a boost converter is the reverse of this kind of inverter. The two inverters limitation to operating in either buck mode or boost mode is a negative. In this study, a five-level inverter that can operate in both buck and boost modes and only requires a single DC source input voltage is proposed. The suggested inverter will therefore have a large operational area. This new inverter's possible conduction modes are examined in order to determine the control system that will be used. A test based on computational modeling and hardware implementation is then conducted in the lab after the new control structure based on sinusoidal pulse width modulation is established. This new inverter can operate in five-level in a buck and/or boost converter in terms of the output voltage to the input voltage, according to the results of simulation and testing. The proposed new inverter outperforms traditional inverters that solely run on buck or boost.
A simple method for controlling buck-boost SEPIC H-bridge inverter Pratomo, Leonardus Heru; Paudel, Sushil; Cahyadi, Bagus Kusuma
International Journal of Applied Power Engineering (IJAPE) Vol 13, No 3: September 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijape.v13.i3.pp670-678

Abstract

Over the past decade, much research and development has gone into the use of electric power converters, and the trend is upward. Inverters are employed when converting DC voltage to AC voltage. Typically, inverters perform functions such as voltage boost (to compensate for voltage decrease) or both voltage buck and boost. Other issues to consider include the structure of the inverter topology and the control method. Based on the problem, a study was conducted on a buck-boost inverter that integrates an H-bridge inverter and a single ended primary inductor converter (SEPIC). The H-bridge inverter is widely recognized for its simplicity of operation and always runs in buck mode. The SEPIC converter always runs in buck-boost mode. Since it is unipolar, it can operate as a buck or boost when combined with SEPIC AC-AC. The output voltage is significantly improved because it has several filters to enhance the signal. This hybrid topology is controlled by sinusoidal pulse width modulation, resulting in a straightforward control technique with outstanding performance. The H-bridge inverter operates in index modulation 0-100%, and the SEPIC converter more than 50%. In the lab, a computational and implementation procedure is used to test the effectiveness of the hybrid topology and control method under consideration. The test results show that the hybrid architecture can function within the desired parameters. The proposed inverter has 4.531% THD_V, 4.531% THD_I, and 97.85% efficiency under simulation.
Peningkatan Kinerja Switched Reluctance Generator dengan Pergeseran Sudut Penyalaan AMALIA, RIZKY; RIYADI, SLAMET; SETIAWAN, FLORENTINUS BUDI; PRATOMO, LEONARDUS HERU
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 9, No 3: Published July 2021
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v9i3.690

Abstract

ABSTRAKDewasa ini teknologi energi terbarukan biasanya menggunakan mesin listrik sinkron Alternating Current (AC) pada pembangkit listrik tenaga angin. Generator listrik sinkron AC menggunakan brush pada proses eksitasi yang membutuhkan perawatan berkala sehingga rumit jika diaplikasikan pada Pembangkit Listrik Tenaga Angin. Pada penelitian ini generator akan menggunakan mesin Switched Reluctance yang dioperasikan sebagai Switched Reluctance Generator (SRG). Untuk menghasilkan keluaran arus yang optimal, SRG akan dioperasikan dengan mengatur sudut penyalaan fasa menggunakan metode single pulse. Metode pensakelaran ini diatur oleh input capture fasilitas mikrokontrol dsPIC 30F4012. Penelitian ini telah diverifikasi dengan simulasi Simulink MATLAB dan pengujian alat. Hasil pengujian optimal dibuktikan pada sudut penyalaan θon = 40 derajat dan θoff = 170 derajat menghasilkan arus discharging sebesar 7.6 A dengan kecepatan 1647.1 RPM ditandai dengan bentuk gelombang arus yang ideal. Hasil arus discharging yang optimal dapat meningkatkan kinerja SRG, sehingga metode ini dapat diaplikasikan pada pembangkit listrik tenaga angin.Kata kunci: SRG, dsPIC30F4012, sudut penyalaan, single pulse ABSTRACTNowadays, renewable energy technology usually uses AC synchronous electric machines in wind power. AC synchronous generator uses a brush in the excitation process, which requires periodic maintenance so it is complicated if applied to wind power. In this research, the generator will use a Switched Reluctance machine that operated as a SRG. To produce an optimal current, the SRG will be operated by adjusting the ignition angle using the single pulse method. This method is controlled by input capture of the microcontroller dsPIC 30F4012. This research has been verified by simulating Simulink MATLAB and testing device. The optimal test results are proven at the ignition angle θon = 40 degree and θoff = 170 degree produces a discharging current of 7.6 A with a speed of 1647.1 RPM characterized by the ideal current waveform. The optimal discharging current results can improve the performance of the SRG, so this method can be applied to wind power.Keywords: SRG, dsPIC30F4012, the ignition angle, single pulse
Pengoptimalan Kinerja Pengereman Regeneratif Motor BLDC menggunakan Cascaded Boost Converter FIRMANTO, DANIEL RAHADIAN; RIYADI, SLAMET; PRATOMO, LEONARDUS HERU; SETIAWAN, FLORENTINUS BUDI
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 9, No 2: Published April 2021
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v9i2.444

Abstract

ABSTRAKMesin Brushless Dircet Current (BLDC) digunakan pada kendaraan listrik karena memiliki torsi yang besar dan memungkinkan untuk pengereman regeneratif. Pengereman regeneratif dirancang agar kendaraan listrik memiliki jarak tempuh yang lebih panjang. Pada saat pengereman, konverter bidirectional dioperasikan menjadi boost rectifier agar energi dapat berpindah ke baterai. Boost rectifier memiliki gain yang rendah, sehingga pengiriman daya ke baterai kurang optimal. Pada penelitian ini ditambahkan chopper kedua yang memiliki gain tinggi agar pengiriman daya lebih optimal. Metode modulasi lebar pulsa yang dibangkitkan mikrokontrol dsPIC30f4012 digunakan untuk mengendalikan saklar (IRFP 460) pada konverter. Verifikasi menggunakan perangkat keras telah dilakukan untuk mendukung penelitian ini. Hasil percobaan pada duty cycle 0,8 dapat dihasilkan arus pada baterai sebesar 0,25 A dan kecepatan berkurang menjadi 663 rpm.Kata kunci: BLDC, Pengereman regeneratif, Boost rectifier, chopper, dsPIC30f4012 ABSTRACTBrushless direct current (BLDC) machine is suitable to be implemented in electric vehicle since it can provide high torque and is capable to do regenerative braking. For electric vehicle applications, the regenerative braking is needed to make such vehicle can travel longer distance. For making the machine current can flow into the battery, the bidirectional converter will be operated as a boost rectifier. The boost rectifier produced a low gain so that the second chopper with a high gain is required. The pulse width modulation (PWM) method was used to control each switch (IRFP 460) using a dsPIC30F4012 microcontroller. A verification with experimental work was done. Based on the result, with 0.8 duty cycle can produced a 0.2 A battery current also and speed reduced to 663 rpm.Keywords: BLDC, Regenerative braking, Boost rectifier, chopper, dsPIC30f4012
Pengendalian Arus pada Inverter Lima Tingkat Penaik dan Penurun Tegangan PRATOMO, LEONARDUS HERU; CHRISTIAWAN, HAPPY DIPTYA EKA
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 11, No 3: Published July 2023
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v11i3.783

Abstract

ABSTRAKPenggunaan inverter terkendali arus pada sistem integrasi dengan jala-jala memiliki beberapa kendala seperti nilai tegangan masukan inverter harus melebihi tegangan pada jala-jala, ditambah lagi terdapat gangguan harmonisa pada frekuensi pensaklaran inverter yang dapat menginterferensi jala-jala. Penggunaan inverter lima tingkat yang digabung dengan AC-AC boost diajukan pada makalah ini untuk mengeliminasi gangguan harmonisa dan mampu menghasilkan nilai tegangan yang lebih tinggi dari pada nilai tegangan masukan. Dengan begitu konverter yang diajukan mampu bekerja sebagai penaik dan penurun tegangan. Konverter yang diajukan menggunakan satu buah sumber DC dan menerapkan metode arus keluaran yang terkendali sebagai dasar dalam penyuntikan arus ke jala-jala untuk riset ke depan. Konverter yang diajukan mampu menghasilkan nilai Total Harmonic Distortion (THD) sebesar 2,6% dan memenuhi standar IEEE Std 519-2014 yaitu kurang dari 5%.Kata kunci: inverter lima tingkat , kendali arus, penaik dan penurun tegangan, THD, penyuntikan arus ke jala-jala ABSTRACTThe use of grid connected current-controlled inverters has several constraints such as the input voltage value of the inverter must exceed the voltage on the grid, plus there are harmonic disturbances at the inverter switching frequency which can interfere with the grid. The use of a five-level inverter combined with AC-AC boost is proposed in this article to eliminate harmonic disturbances and be able to produce a higher voltage value than the input voltage value. Thus the proposed converter is able to work as a buck and boost voltage. The proposed converter uses a single DC source and applies a controlled output current method as a basis for injecting current into the grid for future research. The proposed converter is capable of producing a Total Harmonic Distortion (THD) value of 2.6% and meets the IEEE Std 519-2014 standard, which is less than 5%.Keywords: five-level inverter, current controlled, buck-boost inverter, THD, current injection
Integrasi PMSG dan DC-DC Buck-Boost Converter untuk Meregulasi Tegangan Keluaran menggunakan STM32VET407 SETO, EMANNUEL BAYU; PRATOMO, LEONARDUS HERU
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 12, No 2: Published April 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v12i2.394

Abstract

ABSTRAKEnergi terbarukan saat ini banyak digunakan sebagai sumber energi baru ramah lingkungan. Imbasnya, sumber energi terbarukan dikembangkan secara signifikan seperti mikrohidro. Mikrohidro adalah alat yang mengkonversikan energi air menjadi energi listrik. Dalam sistem ini, mikrohidro terhubung dengan permanent magnet synchronous generator (PMSG) dan menghasilkan energi listrik tiga fasa dengan skala kecil. Untuk menghasilkan energi listrik yang stabil dan memiliki efisiensi tinggi, diperlukan penyearah dioda tiga fasa dan konverter DC-DC. Penelitian ini mengusulkan DC-DC Buck-Boost Converter dengan peregulasi tegangan keluaran. Dari hasil uji coba simulasi dan implementasi perangkat keras menggunakan microcontroller STM32VET407 sistem dapat berjalan baik, dimana tegangan keluaran selalu sesuai dengan referensi yang diinginkan.Kata kunci: Mikrohidro, Permanent Magnet Synchronous Generator (PMSG), Konverter DC-DC, DC-DC Buck-Boost converter ABSTRACTRenewable energy is currently widely used as a new source of environmentally friendly energy. As a result, renewable energy sources are significantly developed such as micro hydro. Micro hydro is a device that converts water energy into electrical energy. In this system, the microhydro is connected to a permanent magnet synchronous generator (PMSG) and produces three-phase electrical energy on a small scale. To produce stable and high-efficiency electrical energy, a three-phase diode rectifier and a DC-DC converter are required. This research proposes a DC-DC Buck-Boost Converter equipped with output voltage regulation. From the results of simulation trials and hardware implementation using the STM32VET407 microcontroller, the system can run well, it is evident that the output voltage is always in accordance with the desired reference.Keywords: Micro hydro; Permanent Magnet Synchronous Generator (PMSG), DCDC converter, DC-DC Buck-Boost converter
Inverter 5-Tingkat Tiga Fasa Empat Kawat menggunakan STM32F407 untuk Catu Daya Mandiri DAGOMIS, IVANILES PUTRA UTAMA; PRATOMO, LEONARDUS HERU
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 9, No 1: Published January 2021
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v9i1.177

Abstract

ABSTRAKSalah satu energi terbarukan adalah pembangkit listrik tenaga surya (PLTS), yang menggunakan photovoltaic (PV) sebagai sarana konversi energi. Untuk mendapatkan daya maksimal, menggunakan konverter DC-DC beralgoritma maximum power point tracker (MPPT). Sistem di Indonesia menggunakan tiga fasa empat kawat (TFEK), sehingga sistem perlu diintegrasi menjadi satu, dikenal dengan nama konversi dua tahap. Masalah yang muncul adalah konverter TFEK lazim diimplementasi menggunakan konverter daya empat lengan, di mana setiap lengannya terdapat dua buah sakelar daya. Hal ini akan mengakibatkan sistem pensaklaran yang tinggi, tapis dan stress tegangan yang besar untuk mendapatkan THD rendah. Oleh karena itu, telah diteliti inverter TFEK menggunakan 5-level inverter. Metode modulasi lebar pulsa digital sinusoidal (MLPDS) digunakan untuk mengendalikan setiap sakelar (IRFP 460) dengan menggunakan mikrokontrol jenis STM32F407. Verifikasi menggunakan perangkat lunak PSIM dan prototype. Berdasarkan hasil pengujian, metode yang dilakukan mampu menghasilkan arus dan tegangan keluaran inverter TFEK dengan THD tegangan sebesar 4,38%.Kata kunci: Inverter 5-tingkat, Tiga fasa empat kawat, STM32F407, THD ABSTRACTOne of the renewable energy is solar power plant (PLTS), which uses photovoltaic (PV) as a means of energy conversion. To get maximum power, use a DC-DC converter with a maximum power point tracker (MPPT). The system in Indonesia uses three-phase four-wires (TPFW), the system needs to be integrated into one, as two-stage conversion. The problem is that TPFW converters are commonly implemented using four-leg power converter, where each leg has two power switches. This will result in high switching system, large filters, and stress voltage to get low THD. Hence, the TPFW inverter 5-level inverter has been investigated. The sinusoidal pulse width modulation (SPWM) method is used to control each switch (IRFP 460) using an STM32F407 microcontroller. Verification with PSIM software and prototype. Based on the results, the method used can produce the current and output voltage of the TPFW inverter with a voltage THD of 4.38%.Keywords: five-level inverter, three-phase four-wire, STM32F407, THD
Design of Two Phase DC-AC Interleaved Boost Inverter with Voltage Control System using PI Controller Wasiatno, Juan Marco Alexander; Pratomo, Leonardus Heru
Jurnal Elektronika dan Telekomunikasi Vol 24, No 2 (2024)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/jet.652

Abstract

DC-DC Interleaved Boost Converter (DC-DC IBC) topology was developed through the interleaving technique since conventional DC-DC Boost Converter has many problems related to complex circuit control, harmonics, and output power. In this research, DC-DC IBC was developed into a Two-Phase AC-AC Interleaved Boost Converter (TP AC-AC IBC), then combined with a Two-Phase Full Bridge Inverter to become a Two-Phase DC-AC Interleaved Boost Inverter (TP DC-AC IBI). TP DC-AC IBI has several advantages, including minimal current and voltage ripples and greater output power because it consists of two AC-AC IBCs. This research aims to meet highly regulated AC voltage needs with the renewable energy source input using the proposed topology, by implementing Proportional Integral (PI) close loop control system. The output voltage is detected using a voltage transducer LV-25P, then compared with a reference voltage and controlled using a PI controller to keep the output voltage consistently stable. The switching signal setting uses the Sinusoidal Pulse Width Modulation (SPWM) technique by modulating the control output with a high frequency. As a verification step, testing was carried out using Power Simulator (PSIM) software and then validated by hardware testing in the laboratory. Testing was carried out using several test signals, and it was found that the proposed method worked well. System efficiency and Total Harmonic Distortion (THD) tests carried out using various load values, and a maximum efficiency of 93.87% and a minimum THD of 2.46% were obtained.
Design and Implementation of Two-phase Boost Inverter using Interleaved Method to Increase Output Current Setiyawan, Fahrul Indra; Pratomo, Leonardus Heru
Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Vol. 10, No. 1, February 2025
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/kinetik.v10i1.2046

Abstract

The advancement of technology is rapidly evolving, particularly in the field of electronics, namely power electronics. One of the applications is the use of new and renewable energy. The converters required in new and renewable energy are inverters with good quality and performance. The step-down (buck) inverter is commonly used in this application. Different from the normal inverter, the step up (boost) inverter is proposed to be analyzed, simulated, and implemented in this paper. The proposed inverter uses a two-phase interleaved boost inverter (TP DC-AC IBI) consisting of a full bridge inverter and dual AC-AC interleaved boost converter. The inverter part always converts DC voltage to AC voltage, while the dual AC-AC interleaved boost converter part serves to increase the output voltage. The inverter consists of three arms: the first and second arms are controlled by Sinusoidal Pulse Width Modulation (SPWM) using 180° phase-shifted carrier signal, and the third arm is controlled by a zero-crossing detector.  Pulse Width Modulation (PWM) is used to control dual AC-AC interleaved boost converter. By combining this inverter with dual AC-AC interleaved boost converter, a new topology is created. This study specifically investigated the strategy to control this new topology using current controls. The actual current was obtained by installing an HX-10P current sensor on the output side. The output current was compared with the reference current, and the next stage was controlled using a proportional plus integral controller. The control signals output was modulated using SPWM signals on the inverter side and PWM at the AC-AC interleaved boost converter side to drive many power switches. To guarantee that the desired current control can always be achieved, the actual current and reference current must always match. The proportional plus integral controller was chosen due to its simplicity, high accuracy, and quick response time. The analysis involved verifying simulation tests using Power Simulator (PSIM) software. The hardware implementation was conducted in the laboratory and tested using standardized equipment. A couple of inductors were installed to reduce harmonic current on the output side and obtained THD of 3.3%, which according to the IEEE 519-2014, has met the standard as it was less than 5%. Thus, this new topology can be used in new and renewable energy for its good performance.
Pelatihan Pembangkit Listrik Tenaga Surya Jenis Off-Grid di BLK Don Bosco Tambolaka-Sumba Barat Daya: Off-Grid Solar Power Plant Training at BLK Don Bosco Tambolaka-Southwest Sumba Pratomo, Leonardus Heru; Setiawan, Florentinus Budi
PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Vol. 10 No. 3 (2025): PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Institute for Research and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/pengabdianmu.v10i3.8440

Abstract

The requirement for instructors who have the theoretical and practical skills of a training center is an absolute necessity. Don Bosco Vocational Training Center in Tambolaka, Southwest Sumba is a place to conduct many trainings, one of which is a solar power plant. Don Bosco Vocational Training Center has adequate equipment but the instructors have not been skilled in both theory and practice. Solar power plant training in theory and practice is a desired solution to obtain experience directly. The service aims to train instructors of the Don Bosco Vocational Training Center and the local community who want to know understand and practice directly. This activity is carried out through several stages: theoretical studies, solar panels in series and parallel and irradiance measurements, batteries and how to determine their health, solar charge control, single-phase inverters, hybrid single-phase inverters, protection systems and types of cables and connectors used. Practices are conducted on-site after the theory is comprehended, and off-grid practices are performed with two types: a combined solar charge control inverter and a hybrid inverter and troubleshooting. From this activity the interest of the instructors is very enthusiastic, this can be seen from the first day the instructors have been able to assemble all the equipment properly and function, on the second day it is repeated to ensure the performance of the instructors is correct along with troubleshooting. This success has proven that the Don Bosco Vocational Training is the center of solar power plant training in Southwest Sumba.
Co-Authors Adipradana, Christophorus Bramantya Anggoro, Giovani Chrisantus Cahyadi, Bagus Kusuma Candra, Kevin CHRISTIAWAN, HAPPY DIPTYA EKA DAGOMIS, IVANILES PUTRA UTAMA Daniel Santoso FIRMANTO, DANIEL RAHADIAN Florentinus Budi Setiawan Kristiawan, Iwan Kusumaningrum, Nazila Muntaha, Ilyas Paudel, Sushil Prasetyo, Daniel Danin Pujianto, Eko Yoyok Rizky Amalia Setiawan, Florentinus Budi Setiyawan, Fahrul Indra SETO, EMANNUEL BAYU Setyawan, Florentinus Budi Slamet Riyadi Tantyono, Neru Hatta Wardani, Agata Dita Wasiatno, Juan Marco Alexander Wijaya, Jonathan