Raif Bayir

In this study, a comprehensive experimental comparison of Permanent Magnet Alternators (PMA) and Claw-Pole Alternators (CPA) used in internal combustion engines (ICE) was conducted under three different operating conditions: no-load, loaded, and charging scenarios. Key performance parameters including voltage, current, engine speed, temperature variation, and fuel consumption were measured and analyzed in detail using a custom-built test setup and data acquisition system. The results show that while PMAs provide higher efficiency and power output under load, they are prone to higher operating temperatures and efficiency losses under no-load and charging conditions compared to CPAs. CPAs, on the other hand, demonstrated stable performance and higher current generation capacity, which is crucial for meeting increasing electrical demands in modern vehicles. The findings underline the importance of predicting alternator performance for optimizing fuel economy, enhancing electrical system reliability, and supporting the development of next-generation automotive alternators. Design recommendations are also presented to improve the efficiency and thermal management of PMAs in practical applications.

This study presents the design and implementation of a real-time monitoring system for traction elevators, leveraging piezoelectric sensors for vibration measurement and speed sensors for velocity dat...

Musa Matli, Ahmet Albayrak, and Raif Bayir. IJFIS 2020;20:188-200. https://doi.org/10.5391/IJFIS.2020.20.3.188

Humans are living things that make mistakes. Failure of drivers while driving can cause life, cost, organ loss. Some accidents may remain traumatic in people's memory and adversely affect their future lives. Traffic rules have been developed to prevent such accidents. Traffic is formally organized in many jurisdictions, with marked lanes, junctions, intersections, interchanges, traffic signals, or signs. Rules of the road and driving etiquette are the general practices and procedures that road users are required to follow. Thanks to these guides placed on the roads, drivers can go on the road in harmony. Despite all these precautions, there are many traffic accidents caused by the driver's carelessness, sleeplessness and tiredness. In today's technology, it is possible to utilize methods of processing images from cameras located in the vehicle to minimize driver-induced accidents. In this study, a prototype system was established in order to use the technologies used in autonomous vehicles and to teach these technologies. Camera and computer are placed on a battery-powered vehicle. Using the OpenCV library, lane tracking is performed successfully using the Canny/Hough Estimation of Vanishing Points (CHEVP) method. The developed system is suitable for the use and development of image processing technologies that are used in autonomous vehicle technology. The system is tested in real-time on a designed runway. From the real-time experimental studies, high-performance results were obtained.

CAN Communication Based Modular Type Battery Management System for Electric Vehicles

Electric vehicles are widely used today. The biggest problem of electric vehicles are limited energy and limited range. Using energy efficiently is an important issue. In this study, we monitored an electric vehicle's systems and power consuming systems in real time. We predicted the optimal driving mode with electronic control unit using Fuzzy Logic Control. We tested system on electric golf car real time. The measurement parameters are transferred to Vehicle Control Unit via Controller Area Network. The driver can choose driving mode as economical driving, normal driving and sporty driving. Experimental results indicate that our Electronic Control Unit increases the driving range of the electric vehicle.

Honeybees provide great benefits for people both with the foods they produce and as a pollinator. It is known that they pass the whole year with the foods they collect in spring and summer months. Beekeepers also benefit from the honey...