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Journal : Jurnal Nasional Teknik Elektro dan Teknologi Informasi

Desain dan Simulasi Bidirectional DC-DC Converter untuk Penyimpanan Energi pada Sistem Fotovoltaik Armadilla Sukma Pratiwi; Syechu Dwitya Nugraha; Epyk Sunarno
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 9 No 3: Agustus 2020
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1376.624 KB) | DOI: 10.22146/.v9i3.377

Abstract

In this paper, a bidirectional DC-DC converter for energy storage in the photovoltaic system has been designed and simulated on MATLAB Simulink. The bidirectional DC-DC converter can work in two modes, charge and discharge mode. The energy storage system will work to store energy into the battery when the power generation capacity is higher than load demand. Then, the energy stored in the battery will be used for the DC bus supply when the power generation capacity is lower than the load demand. To get a constant voltage on the high voltage side (DC bus voltage) and a constant current on the low voltage side (charging current), a PI controller is used. Simulations were carried out with 1,000 W/m2 irradiation to get the power generation higher than the load demand (charge mode) and 200 W/m2 irradiation to get the power generation lower than the load demand (discharge mode) with constant temperature of 25 °C. The test result shows that a bidirectional DC-DC converter can work in charge and discharge modes, which is shown by battery charging currents and the increase or decrease in battery voltage.
Desain dan Simulasi Dual Input Single Output Buck Converter dengan Kontrol Fuzzy Abdul Rahman Wachid; Endro Wahjono; Syechu Dwitya Nugraha Nugraha
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 10 No 1: Februari 2021
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1969.491 KB) | DOI: 10.22146/jnteti.v10i1.1069

Abstract

In this paper, a dual input single output buck converter with fuzzy control is designed and simulated for a DC load supply using the PSIM software. The dual input single output buck converter can work with two different sources. The use of the two power sources of photovoltaic and wind turbine is an alternative solution for obtaining a greater rated power to supply DC loads. The solar panel and the wind turbine will supply the power for the dual input buck converter circuit simultaneously. For the two power sources to work simultaneously, the duty cycle is set using fuzzy control, so that the output voltage can match the desired voltage. Simulation testing is carried out with photovoltaic conditions with varying irradiation and temperature values, as well as varying wind speeds in the wind turbine, i.e, between 4-8 m/s. The simulation results show that the dual-input single-output buck converter can work when powered by two different power sources with a stable output voltage of the converter at its set point, i.e., 14.4 volts.