WoS İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12514/3595

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Analysis of Harmonic Distortion and Efficiency Enhancements in Floating Solar Photovoltaic Systems
(Springer INT Publ AG, 2026) Adak, Suleyman
The FPV systems are rapidly gaining traction as a viable and sustainable alternative to traditional land-based solar installations, addressing challenges such as land scarcity and the growing global demand for renewable energy. These systems offer unique advantages, including improved module efficiency due to the natural cooling effects provided by the water body beneath the panels. However, the deployment of FPV systems also introduces distinct operational challenges, particularly with regard to power quality issues, such as THD in inverter output, which can be exacerbated by environmental factors like water surface motion, temperature fluctuations, and varying irradiance. This paper presents a comprehensive analysis of harmonic distortion in FPV systems, focusing on how these distortions impact overall energy efficiency and system performance. Key performance indicators such as THD, waveform distortion, and associated energy losses were analyzed across a range of operating conditions. To address these challenges, the study explores the implementation of optimized inverter switching strategies and advanced MPPT control techniques. These enhancements were shown to significantly reduce THD content, maintain compliance with power quality standards, and improve the overall energy yield of the system. A reduction of 10 degrees C in temperature in the FPV system leads to a 4% improvement in both efficiency and output power.
Citation - WoS: 46
Citation - Scopus: 57
Harmonics Mitigation of Stand-Alone Photovoltaic System Using LC Passive Filter
(Journal of Electrical Engineering and Technology, 2021) Adak, Süleyman
This article investigates modeling and simulation of the off-grid photovoltaic (PV) system, and elimination of harmonic components using an LC passive filter. Pulse width modulation (PWM) inverter is used to convert the direct current to alternating current. It is very important in terms of energy quality that the inverter output current total harmonic distortion (THDI) is below the value given by standards. Harmonic components have negatively effect on off-grid PV power system. THDI should be kept below a certain level in order to prevent damage to the equipment in the off-grid system and to ensure a higher quality energy flow to reduce the total harmonic distortion (THD) of the solar inverter output current; LC passive filter must be connected to the output of the PWM inverter. There are many types of passive filters for solar inverters. One of the most widely used filter types is the LC filter. LC filters are used in off-grid systems. LC filter is smaller in size and lower cost than other filters. But it is more complicated to determine the parameters of the LC filter. Therefore, in order for the system to remain in a steady state, the parameters must be accurately calculated and analyzed. In this study, the output power of the solar inverter, switching frequency, bus voltage etc. values were determined and LC filter parameters were calculated. Since high inductance values are used in LC filters, the voltage drop increases in these filters. To reduce the voltage drop, the DC bus voltage must be increased, which increases the switching losses. LC filter is connected between the inverter and the nonlinear load to filter the harmonic components produced by the DC/DC boost converter, DC/AC inverter and non-linear load. Matlab/Simulink program was used in Simulation and analysis of off-grid solar system. Solar inverter output current THD was measured as 91.55%. After the LC filter is connected to the system, this value has dropped to 2.62%.

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Browsing WoS İndeksli Yayınlar Koleksiyonu by Institution Author "Adak, Suleyman (57189005652)"