Ceyda Aksoy

• Doctor of Engineering
• Sakarya University

Reducing energy-related CO2 emissions is vital for global climate targets, with Net Zero Energy Buildings (NZEBs) playing a key role. This study evaluates PVSOL software’s accuracy in simulating a rooftop photovoltaic (PV) system in an NZEB in Kocaeli, Turkey. A machine learning model enhanced result reliability using local weather data. The system...

This study aims to evaluate and implement sensorless position measurement methods used to measure the rotor position of DC brushed motors in the automotive industry. A literature review was conducted within the scope of the study, investigating various methods and evaluating their advantages and disadvantages. It was observed that sensorless positi...

In solar photovoltaic (PV) system applications, one of the most important tasks is to extract maximum power from PV arrays with minimum losses. Maximum power point tracking (MPPT) is a commonly used method to maximize power extraction from PV systems under all environmental conditions. In this paper, a modified perturb and observe (P&O) tracking me...

Turkey has been one of the earliest participants of the international climate policy process, since the Ministerial Conference on Atmospheric Pollution and Climate Change held in 1989. The country has prepared strategy documents, actions plans, sectoral policies, and projects to detect and adapt climate change effects. However, any of this has not...

Turkey is a developing country with rising energy demands. Energy access is one of the key parameters to sustain the development, since the country meets a considerable part of energy demands by imported fossil fuels. Distributed photovoltaic power generation (DPPG) is one of the sustainable solutions to increase renewable energy sources (RES) shar...

In this paper, a commonly used global solar radiation (GSR) model is locally calibrated and tested for Kartepe, Kocaeli station. The coefficients of the model are calibrated for monthly and yearly by performing a regression analysis using the measured temperatures. Regression analysis results for both models provide that correlating the clearness i...

This paper presents an investigation of the IEEE 34 bus test system benefits with deployment of distribution static compensator (DSTATCOM) and distributed generation (DG) in the aspect of power loss minimization, bus voltage stability and greenhouse gas emission mitigation. Power loss minimization is carried out by adjusting tap changer positions o...

The size and the cost of photovoltaic (PV) systems are dependent on the performance ratio of solar cells. Current studies in literature usually determine the size according to the total solar radiation received on the surface of solar modules. However, it is a fact that the energy output of a solar module is also effected by weather conditions of t...

This paper performs a strengths, weaknesses, opportunities and threats (SWOT) analysis to present some recommendations for future renewable energy roadmap of Turkey with respect to legal and regulatory framework, science and technology capacities, markets and industries. The following queries are addressed to identify internal and external paramete...

Background: Turkey has been one of the earliest participants of the international climate policy process, since the Ministerial Conference on Atmospheric Pollution and Climate Change held in 1989. The country has prepared strategy documents, actions plans, sectoral policies and projects to detect and adapt climate change effects. However, any of th...

Photometric Flicker event, in other words, Temporal Light Modulation occurs at both visually noticeable and unnoticeable levels by human beings. In spite of this, the human brain and body experience some discomfort as a result of the direct or triggering effects of this event or the existing ailments increase. Photometric Flicker event occurs in a...

In this study, an estimation approach based on local bus measurements of voltage, current and phase angle is presented to assess voltage stability at any of the system load bus. For this purpose, Thevenin equivalent circuit parameters of the IEEE 30-bus standard test system are estimated by using local measurements from Bus k which is selected to b...

The main purpose of this work is to examine the environmental impact of a daylight-linked dimming lighting control system integrated in the Lighting Laboratory of Electrical and Electronics Engineering Department, Sakarya University. For this purpose, total annual energy savings and greenhouse gas emission savings is performed in terms of measured...

This paper examines the environmental impact of a grid-connected PV system in Kocaeli, Turkey, supported by East Marmara Development Agency to contribute local economic and environmental sustainability goals. For this purpose, energy payback time and greenhouse payback time analysis is carried out in terms of calculated total embodied data and meas...

Purpose The purpose of this paper is to propose a fixed PV energy system design and a sun tracking PV energy system design to meet the primitive energy demands of a typical house in Sakarya, Turkey with energy payback times (EPBT) and greenhouse payback times (GPBT) calculations. Design/methodology/approach The designs were developed based on the...

Today the number of office workers has reached to an enormous number due to the fast-growing technology. Most of these office workers spend long hours in enclosed spaces with little/no daylight penetration. The lack of daylight causes physiological and psychological problems with the workers. At this point lighting systems become prominent as the s...

In this paper new diffuse solar radiation equations were established for Antalya, Turkey. For this purpose current equations from the literature which were functions of the clearness index and/or the sunshine fraction were examined. 9 equations were selected to determine the regression constants of the new equations. In conclusion the best equation...

In this paper the number of solar modules of a 1kW solar energy system was determined by using the total solar radiation and the solar module energy output energy relation. The total solar radiation was correlated with the tilt angle of solar modules. Thus the optimum yearly tilt angle of solar modules was calculated and assumed that solar modules...

In this paper diffuse solar radiation component is investigated for Sakarya city (Turkey). For this purpose, 17 diffuse solar radiation equations correlating the diffuse fraction with the clearness index and/or the sunshine fraction are selected from the literature. The predictions obtained from the selected equations are utilized to determine the...

This paper proposes the best tilting case for Sakarya city, Turkey. The main contribution of this work is the correlation of the tilt angle and the output of a photovoltaic (PV) module mathematically. For this purpose, new diffuse solar radiation equations are developed using existing equations in three groups: (i) group 1: the diffuse fraction (Kd...

This paper presents a mechanical design of an altitude-azimuth two axis solar tracking system for Sakarya province, Turkey. The design consists of a solar panel, two linear actuators and linkages. The main objective of this work is to build a mechanical construction: cost effective, durable to withstand the weather conditions of Sakarya; easy to as...

Field measurement method is used in this paper to analyze the energy saving potential of an industrial building. A daylight responsive automated lighting control system application is implemented and the energy consumption of the building is observed for a year. Daylight trespass enabled by using two holes at the roof of the building which have sph...

In the 21th century, one of the biggest problems that the world faces is energy provision. Today, the way that most countries use for energy production is not clean and continuous. The most obvious proof for that is the change in the climate. The amount of CO2 (carbon dioxide) that is caused by fossil fuel burning increases day by day and this situ...