Alpaslan Demirci

Yildiz Technical University · Department of Electrical Engineering

The trend towards renewable energy sources (RES) is increasing daily due to energy demand, costs, and environmental concerns. This study investigates the technical, economic, and environmental impacts of changes in energy costs and incentives on hybrid power systems (HPS). Optimization results show optimal HPSs vary between 75-200% penetration (PR)...

Hybrid power systems (HPS) based on photovoltaic (PV), diesel generators (DG), and energy storage systems (ESS) are widely used solutions for the energy supply of off-grid or isolated areas. The main hybridizing chal- lenges are reliability, investment and operating costs, and carbon emissions problems. Since HPS are usually sized to provide energy...

Electric vehicles (EVs) improve the power grid by increasing intermittent renewable energy consumption and providing financial support to EV users via vehicle-to-grid (V2G) integration. While estimating these advantages, a number of studies have neglected to consider the effect of driving and charging behavior patterns on their results. This articl...

The growing population and technological developments have led to irregular houses and especially industrial facilities in developing cities. Furthermore, due to social and economic factors and the increasing massive migrations, undeveloped rural projects make irregular settlements worse. Thus, the expensiveness caused by the deterioration of the s...

In recent years, distributed generation (DG) has increased rapidly due to the government's incentive policies. Therefore, two-way energy transaction between grid and householders with DG (prosumers) has become common. Moreover, many benefits such as economic revenue, carbon dioxide saving, and peak demand reduction are obtainable. However, this sit...

Today, increasing electric vehicle (EV) popularity thanks to the incentives leads to grow the number of EV charging stations (EVCS). Meeting the increasing demand using fossil fuels puts countries' carbon emission targets into trouble. Therefore, hybrid power systems (HPS) can reduce the grid dependency on energy production using enhancing distribu...

Substantial penetration levels of intermittent and fluctuated renewable energy resources like PV can cause overcapacity and other operational challenges in the grid. Therefore, energy market actors are directed to the feed-in limitations and restrict the installed capacity. Likewise, the declining incentives make energy storage central to increasin...

In recent years, higher penetrations of renewable energy generations helped persuade sustainable energy and environmental targets, although their intermittent and fluctuated nature raised technical challenges. However, hybrid power system can minimize these technical issues by integrating flexible generation capable renewable energy sources like bi...

Supplying electrical energy and drinking water in developing countries, especially in rural areas, is a challenging issue. The main reasons for this may include faulty grid lines, inability to fulfill the increasing demand, and inadequate coverage of the national transmission lines due to the distance between the remote villages. Photovoltaic water...

To ensure the safe and desirable operation of electrical installations, certain factors must be taken into account in the design and operation of the installation. One of these factors is the harmonics generated by nonlinear characteristic elements that affect power quality. Today, parallel to the development of technology, the effects of harmonic...

Todays, energy management is necessary for clean and reliable energy production and consumption. To overcome this obstacle, using energy storage system (ESS) is seem as key factor. In this study, ESS intended to be used in distribution network (DN) to provide uninterrupted energy supply, and prevent a power outage as well as to reduce the load of D...

Technological developments continue to affect every area in our rapidly developing world. These developments gained momentum with the 4 th Industrial Revolution which we called Industry 4.0. This technological development, along with his work life, especially in many areas makes himself felt too much. Business owners should bring their own know-how...

Utilization of renewable energy resources as on-grid or off-grid systems are in a continuous increase. It is mainly because of significant fluctuations on oil prices and rising environmental concerns. Moreover, wind and solar energy resources are utilized in electric energy generation for compensation of fast growing demand. In this study, a compar...

In industry, more than half of the total electrical energy produced in developed countries is converted into mechanical energy by electric motors. The usage rate of asynchronous motors is estimated to be 90% of all electric motors. For these motors, an improvement in efficiency may result in huge savings. These electric motors which have minimized...