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All Journal International Journal of Electrical and Computer Engineering International Journal of Power Electronics and Drive Systems (IJPEDS) Seminar Nasional Aplikasi Teknologi Informasi (SNATI) TEKNIK Mechatronics, Electrical Power, and Vehicular Technology Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Teknosains Jurnal Teknologi Telematika Jurnal IPTEK-KOM (Jurnal Ilmu Pengetahuan dan Teknologi Komunikasi) ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika IJITEE (International Journal of Information Technology and Electrical Engineering) Indonesian Journal of Electrical Engineering and Computer Science Jurnal Nasional Teknik Elektro dan Teknologi Informasi

Fransisco Danang Wijaya

Universitas Gadjah Mada

Author-ID : 2391719

Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Mechanical Engineering Social Sciences

Published : 35 Documents Claim Missing Document

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Articles

Title

Optimum Permanent Magnets Configuration in Flat-Quasi Linear Permanent Magnet Generators Fransisco Danang Wijaya; Budi Azhari; Harnoko Stephanus
International Journal of Electrical and Computer Engineering (IJECE) Vol 6, No 6: December 2016
Publisher : Institute of Advanced Engineering and Science

Flat-quasi type of linear permanent magnet generators (LPMGs) have been considered to be applied for several applications, such for wave energy conversion and free piston combustion engine. One of the important issues concerning LPMG is the permanent magnets configuration, due to its effects to the generator’s excitation performance. In this paper, a 1 kW flat-quasi LPMG would be designed and built. During the process, optimum permanent magnets configuration was required and researched. The optimum configuration considered the output power and resulted cogging force. Invetigation was then conducted by modifying several variables, including poles’ arrangement, pole length, number of pole, and pole skewing angle. The modification constraints were total permanent magnets’ volume and generator dimension. The results showed that permanent magnet configuration with halbach arrangement, pole length equals 55% of the slot pitch length, and 61.19o skewing angle produced the optimum output values.

Impedance Matching Method in Two-Stage Converters for Single Phase PV-Grid System L. Heru Pratomo; F. Danang Wijaya; Eka Firmansyah
International Journal of Electrical and Computer Engineering (IJECE) Vol 5, No 4: August 2015
Publisher : Institute of Advanced Engineering and Science

This paper presents the study on the impedance matching method in two-stage converters for single phase PV-grid system. The use of PV systems was to obtain the electrical power from the sunlight energy. The system consisted of a Buck-Boost DC-DC converter and a five-level inverter. A Buck-Boost DC-DC converter was used as a means of impedance matching to obtain the maximum power that, in this case, through a method by using the incremental conductance current control algorithm. Meanwhile a five-level inverter was used as an interface to the utilities. By using this technique, the system came to be simple. The impedance of the power grid, a Buck-Boost DC-DC converter, and a five-level inverter were seen by PV mostly in the area of RMPP, enabling the maximum power produced by the PV to be delivered to the grid. To demonstrate the effectiveness of the design, the analysis and simulation results, furthermore, were provided

Maximum Power Point Tracking using Particle Swarm Optimization Algorithm for Hybrid Wind-Tidal Harvesting System on the South Coast of Java Fransisco Danang Wijaya; Kukuh Daud Pribadi; Sarjiya Sarjiya
International Journal of Electrical and Computer Engineering (IJECE) Vol 7, No 2: April 2017
Publisher : Institute of Advanced Engineering and Science

This paper proposes a hybrid wind-tidal harvesting system (HWTHS). To extract maximum power from the wind and tidal, HWTHS implements particle swarm optimization (PSO) algorithm in maximum power point tracking (MPPT) method. The proposed HWTHS had been tested on the range of possible input appropriate to the characteristics of the southern coast of Java. The presented result shows that by using PSO-based MPPT algorithm, maximum power point can be achieved. Thus the efficiency of HWTHS is 92 %, 94 % in wind section and 91 % in tidal section. By using PSO-based MPPT, HWTHS can respond well to changes in wind and tidal speed, whether it's a change from low speed to a higher speed or change from high speed to lower speed wherein time to reach new steady state is ± 0.1 s. At varied wind and tidal speed, PSO algorithm can maintain Cp of the system in the range of 0.47 - 0.48 so that power can be extracted to the maximum.

Optimizing Tri-Core Permanent-Magnet-Linear-Generator Direct-Drive Wave-Energy-Conversion System Design for Sea Wave Characteristics in South Coast Yogyakarta Fransisco Danang Wijaya; Sarjiya Sarjiya; Muhammad Rifa'i Putra Sugita
International Journal of Electrical and Computer Engineering (IJECE) Vol 7, No 2: April 2017
Publisher : Institute of Advanced Engineering and Science

According to statistical data, the south coast Yogyakarta has significant ocean wave height which can be used to generate electricity by using wave-energy-converter system. One of the simplest way to convert wave energy to electricity is using direct-drive wave-energy-conversion (WEC) system with permanent-magnet-linear-generator (PMLG). This method is simple because it doesn’t need to convert linear motion to rotational motion. However, PMLG has large electric power losses, has great weight in both of the stator and rotor, and expensive to make. In this paper, a tri-core PMLG was designed. The electric power losses in the winding, translator weight, and manufacturing cost were ideally minimized using multiobjective optimization combined with simulated annealing (SA) algorithm. Then, the design was verified using finite element analysis. The optimized design of this PMLG was simulated using sinusoidal ocean waves which usually occur in the south coast of Yogyakarta to analyze the performance of this linear generator. Simulation result has been shown that this generator can generate 911 watt peak output power at the rated condition and at the optimum load with 81.14% efficiency. This confirms that the optimized design of PMLG is suitable for direct-drive WEC with low power losses and manufacturing cost.

Co-Authors A.A. Ketut Agung Cahyawan W Achmad, Fariz Adha Imam Cahyadi Adlan Bagus Pradana Agus Adiwismono Amrisal Kamal Fajri Andriyatna Agung Kurniawan Artakusuma, Dwi Dharma Bambang Sutopo Bambang Sutopo Budi Azhari Budi Azhari Denny Haryanto Sinaga Dwi Dharma Artakusuma Dyah Ayu Kartika Sari Edi Susilo Eka Firmansyah Eka Firmansyah Ekrar Winata Fikri Waskito Gusti Agung Ayu Putri Hartanto Prabowo Hilman Zarory Husni Rois Ali I Wayan Adiyasa iftitah imawati Johan Agung Irawan Juan C. Vasques Kevin Gausultan Kristianto Adi Widiatmoko Kukuh Daud Pribadi L. Heru Pratomo Leonardus Heru Pratomo Lesnanto Multa Putranto Mohammad Rustam M. L. Mohd. Brado Frasetyo Mokhammad Isnaeni Bambang Setyonegoro Muhammad Ridwan Muhammad Rifa'i Putra Sugita Muhammad Yasirroni Ningtias, Dieta Wahyu Asry Noviarianto, Noviarianto Pebri Prihatmoko Ridi Ferdiana Roni Irnawan Roy Bayu Negara Rudy Hartanto S.Pd. M Kes I Ketut Sudiana . Sarjiya Sayuri Egaravanda Sidik, Yohan Fajar Sriyono Stephanus, Harnoko Suharyanto Suharyanto T. Haryono Tiyono Toni Prasetya Tumiran Wiwik Handajadi, Wiwik Yuwono Bimo Purnomo Zarory, Hilman

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