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Journal : Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics

MPPT Algorithm Based on Zebra Optimization Algorithm for Solar Panels System with Partial Shading Conditions Eviningsih, Rachma Prilian; Efendi, M. Zaenal; Windarko, Novie Ayub; Nugraha, Anggara Trisna; Prasetya, Farhan Dwi; Abdilla, M. Rafi Damas
Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics Vol. 6 No. 4 (2024): November
Publisher : Jurusan Teknik Elektromedik, Politeknik Kesehatan Kemenkes Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35882/ijeeemi.v6i4.11

Abstract

The use of solar panels is being pursued as a solution to reduce dependence on fossil fuels. However, solar panels face challenges such as power fluctuations due to environmental conditions and partial shading. To address these issues, an MPPT technique using Zebra Optimization Algorithm (ZOA) has been developed, which integrates foraging behaviour and defensive strategies to achieve GMPP. Simulation testing results show the superiority of ZOA over PSO in achieving GMPP. ZOA's contribution in addressing this problem is to efficiently perform a global search to find the optimal MPP, even under varying partial shading conditions. The algorithm mimics the behaviour of zebras in foraging and defending against predator attacks, enabling a fast solution search process and higher precision. ZOA can overcome the local maxima trap by expanding the search space, allowing solar panels to function close to optimal efficiency even if there is shading on a portion of the module. This improves system stability and performance and reduces energy loss due to partial shading. ZOA achieved a tracking accuracy of 99.99% with an average tracking time of 0.779 seconds and with a power gain of 28.5%, surpassing PSO with an accuracy of 95.18%, an average trcking time of 0.850 seconds with a power gain of 24.68%. In hardware testing, ZOA is also superior to PSO with an average tracking accuracy of 98.96% while PSO is 97.22%. These results underline the outstanding performance of the ZOA algorithm in optimising the power output of solar panels.
Development of TCR-FC Reactive Power Compensation Device with Fuzzy Logic Control in Electric Power Networks Sunarno, Epyk; Prasetyono, Eka; Anggriawan, Dimas Okky; Nugroho, Mochamad Ari Bagus; Eviningsih, Rachma Prilian; Suhariningsih, Suhariningsih; Nugraha, Anggara Trisna; Anggara Trisna Nugraha
Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics Vol. 6 No. 4 (2024): November
Publisher : Jurusan Teknik Elektromedik, Politeknik Kesehatan Kemenkes Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35882/ijeeemi.v6i4.12

Abstract

Utilization of electrical loads in predominantly inductive single-phase low-voltage power grids, the quality of electrical power becomes poor due to reactive power consumption resulting in a lack of power factor resulting in power loss, voltage drop, and decreased service life of the power grids. equipment. The research on reactive power compensation using TCR-FC aims to make improvements in improving the power factor in single-phase low-voltage electrical networks so that they have flexible control, do not experience excess compensation, have fast dynamic responses, and are space-saving. And can monitor voltage, current, and phase difference parameters through sensor readings to process data mathematically. When using electrical loads, the reactive power value is larger and the power factor is low below 0.85, the system controls the ignition angle of the TRIAC so that the current flowing into the reactor can be controlled by the reactive absorption measure of the fixed capacitor. So, it can improve the power factor. Simulation results can increase the power factor that exceeds the average value of 0.9 by 0.9797 with an error of 0.0288%. Hardware test results can increase the average power factor to exceed 0.9 by 0.9758 with an error of 0.1373%. in conclusion, reactive power compensation devices that use thyristor-controlled reactors and fixed capacitors can be more efficient than capacitor banks.
Zeta Converter as a Voltage Stabilizer with Fuzzy Logic Controller Method in The Pico Hydro Power Plant Eviningsih, Rachma Prilian; Nugraha, Anggara Trisna; Fatqurrochman, Muhammad Ilham
Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics Vol. 4 No. 3 (2022): August
Publisher : Jurusan Teknik Elektromedik, Politeknik Kesehatan Kemenkes Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35882/ijeeemi.v4i3.151

Abstract

The development of the use of environmentally friendly renewable energy has been widely carried out, one of which is the use of energy as a turbine driver at the Pico Hydro Power Plant. The main problem in the use of energy, especially water energy is the flow of water which can affect the flow of water used to rotate the turbine so that the voltage on the DC link cannot be kept constant. Therefore, in this paper, we design and simulate the process of charging lead acid batteries with a zeta converter and a Pico Hydro Power Plant as the main source. The use of batteries in this system as energy storage if the river flow is heavy, the charging process will be carried out and if the river flow decreases, the battery will help to supply household loads. Due to the river flow which is very dependent on natural conditions, the power generated is also fluctuating so we need a control that can produce a constant output voltage from the zeta converter which is used for the battery charging process. Therefore, the aim of using a Fuzzy Logic Controller (FLC) is to keep the output voltage of the zeta converter constant so that it can maintain battery life. The results obtained in the close loop simulation test are a constant output voltage of 14.4 V and an output current of 6.64 A so that it can be used for the battery charging process that will be used for household lighting.