Mekatronik Mühendisliği: Recent submissions
Now showing items 61-80 of 83
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A perspective on hydrogen energy research, development and innovation activities in Turkey
(Wiley, 2020)Hydrogen can be considered as the most promising fuel towards the greenization. Developed and developing countries around the world have formed their research, investments and directives on hydrogen. The leading countries ... -
Interline fuel cell (I-FC) system with dual-functional control capability
(Pergamon-Elsevier Science Ltd, 2020)In this paper, a new system concept is presented for the grid connection of fuel cells. In conventional grid-connected systems, fuel cells ensure the generated power into a single electrical feeder and control the ... -
Performance enhancement of energy extraction capability for fuel cell implementations with improved Cuckoo search algorithm
(Pergamon-Elsevier Science, 2020)This paper addresses an improved optimization method to enhance the energy extraction capability of fuel cell implementations. In this study, the proposed method called Dynamic Cuckoo Search Algorithm (DCSA) is tested in ... -
Active/reactive energy control scheme for grid-connected fuel cell system with local inductive loads
(Pergamon-Elsevier Science, 2020)In the grid interconnection of fuel cells, local reactive loads connected to the electrical systems generate reactive power which deteriorates the power factor in the utility-grids. This situation causes energy losses, ... -
Improvement of energy harvesting capability in grid-connected photovoltaic micro-inverters
(Taylor & Francis, 2020)In this paper, a multi-stage micro-inverter system depending on a dual neutral point clamped (D-NPC) inverter is developed for low power photovoltaic (PV) applications. The primary objectives of this study are determined ... -
Uncoupled Modeling of the Effects of Coating Layer on the Growth Instability in Pure Metal Solidification
(Springer International Publishing Ag, 2020)The mold coating is one of the factors to control the heat transfer rate and development of microstructure in metal solidification. In this study, effects of the coating layer on growth instability in solidification of ... -
Energy distribution analyses of an additional traction battery on hydrogen fuel cell hybrid electric vehicle
(Elsevier Ltd, 2019)Hydrogen is the most abundant element in the world and produces only water vapor as a result of chemical reaction that occurred in fuel cells. Therefore, fuel cell electric vehicles, which use hydrogen as fuel, continue ... -
Fuzzy self-adaptive PID control technique for driving HHO dry cell systems
(Elsevier, 2020)When the standard operating temperatures are exceeded in hydroxy generators, production performance decreases and power consumption increases. Self-adaptive fuzzy proportional integral derivative systems have been used to ... -
Performance & emission analysis of HHO enriched dual-fuelled diesel engine with artificial neural network prediction approaches
(Elsevier, 2020)Most of the studies on conventional fuel types that can be used in internal combustion engines have been made in order to improve performance values. Nowadays environmental problems have shown that emission values are more ... -
A novel application of pulse width modulation technique on hydroxy gas production
(Elsevier, 2019)Software and hardware advancements on a hydroxy gas (HHO) production system is presented in this experimental study. A unique control system that enables to generate hydroxy gas at the specified volumetric flow rates with ... -
Multipurpose compensation scheme for voltage Sag/swell and selective harmonics elimination in distribution systems
(VSB-Technical University of Ostrava, 2018)Voltage harmonics, sag, and swell are the most harmful disturbances in distribution systems. This paper introduces a novel effective controller method for simultaneous compensation of both voltage sag/swell and voltage ... -
Simulation of diesel hybrid electric vehicle containing hydrogen enriched CI engine
(Elsevier, 2019)Hydrogen enrichment on diesel engines is a proven solution for both minimizing the undesirable emissions and fuel consumptions. Also, hybrid electric vehicles which manufactured for the same goal too, are playing an important ... -
Exergy and performance analysis of a CI engine fuelled with HCNG gaseous fuel enriched biodiesel
(Inderscience Enterprises Ltd., 2017)Soybean oil based fatty acid methyl ester (FAME) is produced and blended with diesel fuel at 25% volumetric ratio. Besides, pure hydrogen (H2) and compressed natural gas (CNG) mixture named HCNG fuel is used with 20 litres ... -
Experimental investigation of using 30HCNG fuel mixture on a non-modified diesel engine operated with various diesel replacement rates
(Elsevier, 2016)Pilot diesel injection phenomenon consisted by gaseous fuels such as hydrogen and natural gas; ensure the way of exert fuels without any structural modification in compression ignition engines. This study investigates of ... -
Experimental comparison of pure hydrogen and HHO (hydroxy) enriched biodiesel (B10) fuel in a commercial diesel engine
(Elsevier, 2016)Main objective of this study is to compare performance and emission characteristics of a pilot injection diesel engine with the additions of alternative fuels like pure hydrogen, HHO and biodiesel. In order to achieve this ... -
Zinc oxide-tungsten-based pyramids in construction of ultra-broadband metamaterial absorber for solar energy harvesting
(Institution of Engineering and Technology, 2017)A new broadband absorber is investigated for the entire frequency domain of solar light (infrared, visible light and ultraviolet). While current absorbers in the literature have limited operation frequencies, investigated ... -
A review of command shaping techniques for elimination of residual vibrations in flexible-joint manipulators
(JVE International, 2016)Command shaping is an important open-loop control method for improving the settling time and positioning accuracy. This technique also minimizes residual vibrations. Shaped command profiles are formed by convolving a ... -
Overview of the next quarter century vision of hydrogen fuel cell electric vehicles
(Elsevier, 2019)Last three decades, costumers and manufacturers of automotive sector have been influenced positively by Hydrogen and fuel cells (FCs). The main goal of automakers can be pointed as minimizing the fuel consumption and exhaust ... -
A novel fuzzy logic based safe operation oriented control technique for driving HHO dry cell systems based on PWM duty cycle
(Elsevier, 2019)The presented study provides details on Fuzzy Logic based control of HHO generators aims at protecting the HHO generator from extreme temperature effects while maximizing the hydrogen production. The Fuzzy Logic Controller ... -
A Theoretical Heat Transfer Model for Unidirectional Solidification of Pure Metals on a Coated Sinusoidal Mold with Constant Boundary Temperature
(Springer, 2019)A theoretical model is presented in this study for investigating the heat transfer problem during solidification of pure metals on a coated sinusoidal mold. The previous works are extended by considering effects of both ...
