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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Jurnal Teknik ITS IPTEK Journal of Proceedings Series IPTEK The Journal for Technology and Science TELKOMNIKA (Telecommunication Computing Electronics and Control) Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control SENTIA 2015 JAVA Journal of Electrical and Electronics Engineering Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan Indonesian Journal of Electrical Engineering and Computer Science JAREE (Journal on Advanced Research in Electrical Engineering) SinarFe7 Sewagati Jurnal Rekayasa elektrika Jurnal Cakrawala Maritim Jurnal Cakrawala Maritim SNTE
Mochamad Ashari
Electrical Engineering, FTI, Institut Teknologi Sepuluh Nopember, Surabaya, INDONESIA
Arts Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Mechanical Engineering Public Health Social Sciences Other

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MPPT Control System Based on Incremental Conductance and Constant Voltage using Coupled Inductor-Capacitor Zeta Converter in hybrid PV-Wind Turbine System Soedibyo Soedibyo; Mohammad Ridwan; Gusti Rinaldi Zulkarnain; Andri Pradipta; Sjamsjul Anam; Mochamad Ashari
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 1, No 2 (2017): October
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25796216.v1.i2.24

Abstract

This paper proposes a method of maximum power point tracking control using Incremental Conductance employed in hybrid photovoltaic-wind turbine for DC micro-grid system. The rapid growth of renewable energy using photovoltaic (PV) and wind turbine due to low operational cost and easy to implementation. Improvement of the efficiency of PV and wind turbine based on incremental conductance is the solution to get maximum power in PV and Wind Turbine. The proposed method uses variable step to achieve maximum power with high speed tracking, high efficiency and low steady state error calculation. The performance of the MPPT technique has been applied in dc-dc boost converter. Moreover, Zeta Converter using Coupled Inductor-Capacitor is added for maintain constant voltage in passive load. This high gain converter can reach 311 Volt DC with 1000 W output power and high efficiency up to 90%. The effectiveness of proposed method is implemented in two hybrid system using PV and wind turbine source. Keywords: incremental conductance technique; maximum power point tracking; Zeta Converter using Coupled Inductor-Capacitor. 
Transformerless dc Converter for Distributed Solar Power Generation System Heri Suryoatmojo; Akbar Faiz; Mochamad Ashari; Ronny Mardiyanto
JAREE (Journal on Advanced Research in Electrical Engineering) Vol 1, No 1 (2017): April
Publisher : Department of Electrical Engineering ITS and FORTEI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25796216.v1.i1.7

Abstract

There are two types of distributed solar power generation system stand-alone system and grid-connected system. In grid-connected system usually are equiped with additional transformer to transfer the energy from solar power to the grid. However, it has resulted in considerable cost in providing these systems. Therefore in this reserach develops boost transformerless inverter system. The proposed system consists of a boost converter and transformerless inverter. Boost converter is used to increse the dc voltage yield by photovoltaic (PV) and delivered to the grid by mean of  transformerless inverter.In order to maximize the power from PV, the proposed system is also designed with Maximum Power Point Tracking (MPPT) by changing the value of modulation index in the transformerless inverters. From the simulation results show that the system can work effectively in a variety conditions such as light intensity changed and fluctuating in the grid  voltage side. Keywords: Inverter Transformerless, Boost Converter, MPPT, Photovoltaic.
Model DFIG Pembangkit Listrik Tenaga Angin Sebagai Suatu Unit Pembangkit Tersebar Ramadoni Syahputra; Imam Robandi; Mochamad Ashari
Jurnal Intake : Jurnal Penelitian Ilmu Teknik dan Terapan Vol. 8 No. 2 (2017): Oktober 2017
Publisher : FT- UNDAR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.48056/jintake.v8i2.25

Abstract

In this paper, we present the doubly-fed induction generator (DFIG) model in a wind turbine system as a unit of the distributed generator. The wind turbine driven by doubly-fed induction machine is a part of the distributed generation which feeds ac power to the distribution network. The system is modeled and simulated in the Matlab Simulink environment in such a way that it can be suited for modeling of all types of induction generator configurations. The model makes use of rotor reference frame using a dynamic vector approach for machine model. The fuzzy logic controller is applied to the rotor side converter for active power control and voltage regulation of wind turbine. Wind turbine and its control unit are described in details. All power system components and the fuzzy controller are simulated in Matlab Simulink software. For studying the performance of the controller, different abnormal conditions are applied even the worst case. Simulation results prove the excellent performance of the fuzzy controller unit as improving power quality and stability of the wind turbine.
APLIKASI SIZING DAN DESIGN PV ROOFTOP RESIDENTIAL BERBASIS MOBILE ANDROID Abigail Engrasia Maharani; Dedet Candra Riawan; Mochamad Ashari
SinarFe7 Vol. 4 No. 1 (2021): SinarFe7-4 2021
Publisher : FORTEI Regional VII Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1023.3 KB)

Abstract

SDGs merupakan tujuan global dengan berbagai macam tujuan salah satunya adalah SDG nomor 7. Dengan itu, diperlukan pengembangan PV di Indonesia. Di sisi lain, aplikasi android dapat menjangkau berbagai kalangan untuk turut serta berkontribusi dalam pencapaian SDG. Oleh karena itu, tugas akhir ini merancang aplikasi PV Rooftop sistem dan desain untuk mobile android demi membantu menyukseskan program pemerintah dalam mencapai tujuan SDGs nomor 7. Perhitungan dilakukan dengan clear sky irradiance dan dibandingkan dengan data sebenarnya. Analisis ekonomi dilakukan menggunakan simple payback period, ROI, dan NPV. Dengan rancangan yang ada, didapatkan error untuk pemodelan posisi matahari 2%, estimasi iradiansi untuk arah hadap, kemiringan sel surya, dan lokasi masing-masing memiliki error 5%, 5%, dan 13%, serta estimasi PV Output untuk variasi yang serupa masing-masing memiliki error 1%, 6%, dan 11%. Dengan error yang kecil dan perhitungan pada aplikasi android sama, maka pemodelan ternilai tepat untuk pemodelan tersebut.
Performance Characteristics of Miniature Photovoltaic Farm Under Dynamic Partial Shading Antonius Rajagukguk; Dedet Candra Riawan; Mochamad Ashari
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 1: July 2018
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v11.i1.pp400-408

Abstract

This paper presents investigation of  performance characteristic on a miniature photovoltaic farm under dynamic partially shaded condition. Effects of applying bypass diodes in each photovoltaics modul and the transient current of the diode is also investigated. The miniature of PV Farm consisting 4 photovoltaic panels, connected in series to form one string. The whole system comprises 5 photovoltaic strings, which are connected in parallel producing 30 volt and 60 watt peak power fromminiature PV farm.  Shading of 10%, 20 % up to 50 % with dynamically changed is applied. Result from both laboratory tests and simulations is investigated and show very similar.
Modeling and Simulation of MPPT-SEPIC Combined Bidirectional Control Inverse KY Converter Using ANFIS in Microgrid System Soedibyo Soedibyo; Farid Dwi Murdianto; Suyanto Suyanto; Mochamad Ashari; Ontoseno Penangsang
Indonesian Journal of Electrical Engineering and Computer Science Vol 1, No 2: February 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v1.i2.pp264-272

Abstract

Photovoltaic system (PV) is widely used in various renewable energy application. The main problem of PV system is how to get the maximum output power which is integrated in microgrid system. Furthermore, the redundancy output power generated by on a distribution system should also be considered. This study utilizes the excess power for energy storage using bidirectional of KY inverse converter. Since the DC voltage which generated by PV and the energy storage will be converted into AC voltage using inverter toward load. This paper proposes ANFIS as search optimization method using SEPIC converter with a maximum efficiency of 99.95% to impact to power generation performance  in microgrid system.
Optimal Design of Hydrogen Based Wind-Microhydro Using Genetic Algorithm Soedibyo Soedibyo; Heri Suryoatmojo; Imam Robandi; Mochamad Ashari
Indonesian Journal of Electrical Engineering and Computer Science Vol 10, No 6: October 2012
Publisher : Institute of Advanced Engineering and Science

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Abstract

The target of stand-alone hybrid power generation system was to supply the load demand with high reliability and economically as possible. To design these criteria the optimal design of the proposed configuration should be done by using intelligent optimization technique.  This study utilized Genetic Algorithm method to determine the optimal capacities of hydrogen, wind turbines and micro hydro unit according to the minimum cost objective functions that relate to these two factors. In this study, the cost objective function included the annual capital cost, annual operation maintenance cost, annual replacement cost and annual customer damage cost. The proposed method had been tested in the hybrid power generation system located in Leuwijawa village in Central Java of Indonesia. Simulation results showed that the optimum configuration can be achieved using 19.85 ton of hydrogen tanks, 21 x 100 kW wind turbines and 610 kW of micro hydro unit respectively. DOI: http://dx.doi.org/10.11591/telkomnika.v10i6.1326
Control Design of Wind Turbine System Using Fuzzy Logic Controller for Middle Voltage Grid Soedibyo Soedibyo; Feby Agung Pamuji; Mochamad Ashari
Indonesian Journal of Electrical Engineering and Computer Science Vol 13, No 3: March 2015
Publisher : Institute of Advanced Engineering and Science

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Abstract

This paper presents a  system wind turbine in order to have continously electricity supply for 20 kV grid. Output wind turbine controlled by dc-dc boost converter to produce maximum power in order to obtain the MPP (Maximum Power Point). Output of the converter is controlled by fuzzy logic to obtain the MPP (Maximum Power Point) wind turbine, thus the efficiency  wind turbine can be increased. The system of wind turbine is connected to 20 kV grid. From the simulation using matlab 2010 can be conclude that the controller can shift power to 75 % maximum power of wind turbine. DOI: http://dx.doi.org/10.11591/telkomnika.v13i3.7167
Performance Fuzzy Logic Control to Minimize Output Voltage Ripple and Balanced Current Distribution of DC-DC Converters in Parallel Non-Identical Bambang Suprianto; Mochamad Ashari; Mauridhi Hery Purnomo
IPTEK The Journal for Technology and Science Vol 21, No 1 (2010)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j20882033.v21i1.28

Abstract

Analysis of DC-DC converters are arranged in parallel with the inductor parameters which are different from what discussed in this paper. Buck DC-DC converter using non-identical model, that is different in the value of inductance which is L1 ≠ L2 ≠ L3. Research techniques are taken from the difference of current flows of each converter i.e. I1-I2 and I1- I3 and the reference current is I1. This current difference results are used as input controller. PID and Fuzzy Inference System with 5 gbell membership function are used as a controller. The results of this study indicate a significant system performance. Output voltage ripple is 10 mV with the total output current is 63.7 Ampere. Each DC-DC converter provides a current of contribution to the load 21.28 Ampere. The difference of the current distribution of each converter module range is 1mA - 4mA RMS (Root Mean Square) using PID control, while using Fuzzy Logic Control for differences in the distribution of current is 0.1 mA RMS and the output voltage is 48 volt. Fuzzy Logic Control performance has shown an improvement of control systems to reduce the output voltage ripple and the ability to share load current equally into each DC-DC converter.
The Design of DC Micro Grid with a Load-Based Battery Discharge Method for Remote Island Electrification Utilizes Marine Currents and Solar Photovoltaic Faanzir; Mochamad Ashari; Soedibyo; Suwito; Umar
Kinetik: Game Technology, Information System, Computer Network, Computing, Electronics, and Control Vol. 7, No. 4, November 2022
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/kinetik.v7i4.1576

Abstract

This paper presents the design of DC micro grid with a load-based battery discharge method for remote island electrification utilising marine currents and solar photovoltaic. To anticipate the intermittent, a load-based battery discharge method is proposed. A centralized battery storage is sized according to the unfilled load demand by the marine current and the solar PV. Thus, the length of the turbine diameter is varied to meet the optimum system size. Hourly data of marine current speed from Cipalulu Strait in Maluku, Indonesia is provided. Data at a typical time, shows that the marine current peak power occurs every 6 hours perday, whereas the PV is at noon. The loads divide into 6 categories, including household 1, household 2, villagse office, school, mosque, and public health center with the peak demand as 112 kW and 856 kWh perday. All loads, mainly for lightings and electronic equipment work in 24 V DC through converters. The distribution network employs 320 V DC connecting from the power plan to the community residents. Simulations demonstrate that the battery size, solar PV, and turbine radius matches to meet the loads. Simulations also show that the battery utilization meets its current and capacity, meaning that an optimum size and filling the load profile can be smoothly conducted.
Co-Authors A. Musthofa. Abigail Engrasia Maharani Abil Huda Achmad Abdul Ghoni Adhika Prajna Nandiwardhana Adi Soeprijanto Ainur Rachmad Hidayat Akbar Faiz Akhmad Zaky Fanani Alamsyah Achmad Andi Taufiq Andri Pradipta Antonius Rajagukguk Bambang Sujanarko Bambang Suprianto . Bayu Prasetyo Cahyaningati, Desi D Fahmi Dedet Candra Riawan Dedet Chandra Riawan Denny Dermawan Dewi Kurniasih Dimas Anton A Dwiana Hendrawati Faanzir Faanzir Farid Dwi Murdianto Feby Agung Pamuji Glanny M.Christiaan Mangindaan Gusti Rinaldi Zulkarnain Gusti Rinaldi Zulkarnain Hari Agus Sujono Harumwidiah, Anisa Heri Suryoatmojo Heri Suryoatmojo Hermansyah Hermansyah Hery Suryoatmojo Imam Robandi Imron Rosyadi K B Adam Maharani, Aditya Mahfudzi, Imam Margo P Marselin Jamlaay Mauridhi Heri Purnomo Mauridhi Hery Purnomo Mochamad Reganata Mochamad Wahyu Jasa Putra Mochammad Choirul Rizal Mochammad Rifai Moh. Jauhari Mohammad Ridwan Muhammad Zaky Zaim Muhtadi Muldi Yuhendri Nurcahya, Kevinda Anugrah Nurvita Arumsari Ontoseno Penangsang Priyo Edy Wibowo Ramadoni Syahputra Resa Hidayat Pramasdeka Rezi Delfianti Riny Sulistyowati Ronny Mardiyanto, Ronny Rony Seto Wibowo S Hidayat Sjamsjul Anam Soedibyo Soedibyo Soedibyo Soedibyo Soedibyo Soedibyo Soedibyo Suwito Suyanto Suyanto Takashi Hiyama Teguh Yuwono Umar Vita Lystianingrum Yanwar M.S Yanwar M.S Zaenal P Zamratul Fuadi