Ertan, Hulusi Bülent
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Name Variants
Bülent Ertan H.
Ertan, HB
Ertan,H.B.
Ertan, H. B.
E.,Hulusi Bülent
Ertan, Hulusi Bulent
H.,Ertan
Bulent Ertan H.
ERTAN, HB
H. B. Ertan
H., Ertan
Ertan, H. Bulent
Hulusi Bulent, Ertan
Hulusi Bülent, Ertan
Ertan, Hulusi Bülent
E.,Hulusi Bulent
H.B.Ertan
E., Hulusi Bulent
Ertan H.
E., Hulusi Bülent
Bulent Ertan,H.
Ertan, HB
Ertan,H.B.
Ertan, H. B.
E.,Hulusi Bülent
Ertan, Hulusi Bulent
H.,Ertan
Bulent Ertan H.
ERTAN, HB
H. B. Ertan
H., Ertan
Ertan, H. Bulent
Hulusi Bulent, Ertan
Hulusi Bülent, Ertan
Ertan, Hulusi Bülent
E.,Hulusi Bulent
H.B.Ertan
E., Hulusi Bulent
Ertan H.
E., Hulusi Bülent
Bulent Ertan,H.
Job Title
Profesor Doktor
Email Address
bulent.ertan@atilim.edu.tr
ORCID ID
Scopus Author ID
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
Scholarly Output
25
Articles
3
Citation Count
26
Supervised Theses
2
25 results
Scholarly Output Search Results
Now showing 1 - 10 of 25
Conference Object Citation Count: 0Sizing of Series Hybrid Electric Vehicle with Hybrid Energy Storage System(Ieee, 2018) Ertan, H. Bulent; Arikan, F. Remzican; Electrical-Electronics EngineeringThis work is aimed to develop a realistic design procedure for a series hybrid plug in vehicle, with a view to use it in a mathematical design optimization. The purpose of the optimization is minimizing the initial cost, as well as the running costs of the vehicle. Therefore there is a multi-objective design optimization problem in hand. Such problems are very suitable for mathematical optimization, however, accurate and not time consuming design procedure is a must, to obtain meaningful results. This paper introduces such a design procedure. The approach is illustrated on a commercial vehicle simulation model. The accuracy of the model is illustrated by comparing simulation results with vehicle test results.Conference Object Citation Count: 3Comparison of a Magnetically Geared PM Wind Generator with Radial Flux Generator(Institute of Electrical and Electronics Engineers Inc., 2018) Zeinali,R.; Ertan,H.B.; Electrical-Electronics EngineeringDirect drive wind turbines promise to be more reliable and efficient than commonly used geared wind turbines. This paper presents part of a study aiming to identify whether 'Dual Stator Spoke Array Vernier Permanent Magnet' (DSSAVPM) generators present an advantage, regarding size or cost, as compared to the conventional radial flux PM machine for direct drive applications. For this purpose, design of both machines is optimized for the same specifications and using the same design criteria. optimization results are presented and discussed. It is found that a DSSVPM generator design, with almost the same performance as the RFPM generator, but with 45% of its mass is possible. © 2018 IEEE.Conference Object Citation Count: 1Designing High Power Density Induction Motors for Electric Propulsion(Institute of Electrical and Electronics Engineers Inc., 2022) Ertan,H.B.; Siddique,M.S.; Koushan,S.; Azuaje-Berbeci,B.J.; Electrical-Electronics EngineeringDesigning high-power-density electric motors for propulsion has become an increasingly important issue in the past few decades. This is not only because electric vehicles are projected to become the main private transportation means in near future, but also because of the ever so important metro and railway transport requirements. Along with these application areas, electric aircraft propulsion is also coming into focus in recent years. Electric motors for traction are required to have high torque density, high efficiency over a wide speed range and are required to be robust. In recent years, permanent magnet (PM) motors became the favorite choice for such applications because of their higher efficiency than other types of motors. Increasing demand for permanent magnets is likely to cause supply problems. Therefore, permanent magnet-free alternative motor types are of much interest. In this paper, the authors present the design of a 125 kW induction motor for railway application. This design has 3-times the power density of a commercial induction motor. The designed motor is manufactured and its test results are used for establishing an accurate finite-element model for the prediction of its performance. This model is used to investigate the effect of magnetic loading choice, slot shape and magnetic material choice on the efficiency of the motor. It is shown that with the same basic dimensions the efficiency of the motor can be increased to 96% which is comparable with a similar size PM motor. © 2022 IEEE.Conference Object Citation Count: 0An approach for Improving Performance of Sensorless Field Control(Institute of Electrical and Electronics Engineers Inc., 2018) Bulent Ertan,H.; Filci,T.; Electrical-Electronics EngineeringSensorless vector control is preferred in some applications, because there is no need for speed or position sensor. However, by their very nature, they are susceptible to making position error in rotor position estimation. As a consequence the performance of motor drives employing this technology is lower than those which employ sensors. This paper presents a new approach which identifies and uses rotor slot harmonic current component in the stator current to identify rotor position. The time taken by the algorithm used is short enough to be embedded within the vector control algorithm. The essence of the algorithm is treating the current component due to rotor slot harmonics as an amplitude modulated signal on the fundamental current component. The magnitude of this current component is identified via demodulation. Using this information rotor position and speed can be determined. This approach is tested on a commercial induction motor and some results are presented which illustrate that rotor position can be successfully determined. © 2018 IEEE.Conference Object Citation Count: 1Comparison of a Magnetically Geared PM Wind Generator with Radial Flux Generator(Ieee, 2018) Zeinali, Reza; Ertan, H. Bulent; Electrical-Electronics EngineeringDirect drive wind turbines promise to be more reliable and efficient than commonly used geared wind turbines. This paper presents part of a study aiming to identify whether "Dual Stator Spoke Array Vernier Permanent Magnet" (DSSAVPM) generators present an advantage, regarding size or cost, as compared to the conventional radial flux PM machine for direct drive applications. For this purpose, design of both machines is optimized for the same specifications and using the same design criteria. Optimization results are presented and discussed. It is found that a DSSVPM generator design, with almost the same performance as the RFPM generator, but with 45% of its mass is possible.Conference Object Citation Count: 0Sizing of Series Hybrid Electric Vehicle with Hybrid Energy Storage System(Institute of Electrical and Electronics Engineers Inc., 2018) Ertan,H.B.; Arikan,F.R.; Electrical-Electronics EngineeringThis work is aimed to develop a realistic design procedure for a series hybrid plug in vehicle, with a view to use it in a mathematical design optimization. The purpose of the optimization is minimizing the initial cost, as well as the running costs of the vehicle. Therefore there is a multi-objective design optimization problem in hand. Such problems are very suitable for mathematical optimization, however, accurate and not time consuming design procedure is a must, to obtain meaningful results. This paper introduces such a design procedure. The approach is illustrated on a commercial vehicle simulation model. The accuracy of the model is illustrated by comparing simulation results with vehicle test results. © 2018 IEEE.Conference Object Citation Count: 3Standstill Estimation of Stator Resistance of Induction Motors with Novel Innovation-Based Adaptive Extended Kalman Filter(Institute of Electrical and Electronics Engineers Inc., 2021) Inan,R.; Yirtar,M.Z.; Bulent Ertan,H.; Electrical-Electronics EngineeringIn this study, a method is developed to identify stator resistance of an induction motor (IM) at standstill in the self-tuning. An innovation-based adaptive extended Kalman filter (IAEKF) estimator in which the process noise is dynamically updated with an adaptive mechanism different from the conventional extended Kalman filter (EKF) is designed to estimate stator resistance with αβ- stator stationary axis components of stator current and αβ- components of stator flux of an IM. The reason for estimating the stator flux and stator current together with the stator resistance is to both increase the stability of the proposed estimator algorithm by using the correlation between the parameters and states in the non-linear inputs applied to the estimator and obtain the motor flux information needed by the control system. In the proposed IAEKF algorithm, a stator flux-based IM model is used for prediction purposes. The standstill estimation performance of the proposed novel IAEKF is tested with both sinusoidal and PWM power supplies, The real-time estimation results show the effectiveness and prediction accuracy of the proposed stochastic-based estimator. © 2021 IEEE.Article Citation Count: 0A model for the prediction of thermal runaway in lithium-ion batteries(Elsevier, 2024) Azuaje-Berbeci, Bernardo J.; Ertan, H. Bulent; Electrical-Electronics EngineeringThe increasing popularity of electric vehicles is driving research into lithium -ion batteries (LIBs). Thermal runaway (TR) in LIBs is a serious concern for the safe operation of these high-energy-density batteries that is yet to be overcome. A reliable model is needed to predict voltage variation, heat generation, temperature rise, and the process leading to TR of a LIB battery under its operating conditions (charging-discharging). Such a model can be used to design battery packs more resilient to thermal runaway or assess how a battery pack would perform under hazardous conditions. Furthermore, it can be used for generating a warning signal if there is a possibility of the battery going towards TR. This paper presents an approach to solving this problem, which is not currently well addressed in the literature. The approach adopted in this paper is based on a numerical analysis of a multilayered electrochemical-thermal model of LIB. Tuning the parameters of a LIB for accurate results from this numerical model is presented, as well as the details of the approach in the paper. Experiments are performed under several LIBs, and their voltage and surface temperature variations are measured under various operating conditions, including thermal runaway. The results of the experiments are compared with the predictions of the numerical simulations. An excellent agreement is observed with the experimental results, proving the accuracy of the proposed approach. This approach can be configured to give results in a few minutes. The paper also discusses how the developed approach can be used to create a TR warning during operating conditions or to change the mode of operation of a LIB before a hazard occurs.Conference Object Citation Count: 3Comparison of a Magnetically Geared PM Wind Generator with Radial Flux Generator(Institute of Electrical and Electronics Engineers Inc., 2018) Zeinali,R.; Ertan,H.B.; Electrical-Electronics EngineeringDirect drive wind turbines promise to be more reliable and efficient than commonly used geared wind turbines. This paper presents part of a study aiming to identify whether 'Dual Stator Spoke Array Vernier Permanent Magnet' (DSSAVPM) generators present an advantage, regarding size or cost, as compared to the conventional radial flux PM machine for direct drive applications. For this purpose, design of both machines is optimized for the same specifications and using the same design criteria. optimization results are presented and discussed. It is found that a DSSVPM generator design, with almost the same performance as the RFPM generator, but with 45% of its mass is possible. © 2018 IEEE.Conference Object Citation Count: 4Magnetically geared direct drive wind generator thermal analysis(Institute of Electrical and Electronics Engineers Inc., 2017) Zeinali,R.; Ertan,H.B.; Yamali,C.; Tarvirdilu-Asl,R.; Electrical-Electronics EngineeringThis paper considers Dual Stator Spoke Array Vernier Permanent Magnet (DSSA-VPM) generator for the direct drive wind-electric energy conversion. The structure of the generator is described. Although how this design is optimized is not discussed, dimensions of the designed generator are given. In electrical machine design thermal performance is naturally of utmost importance. In this paper thermal performance of the design and how its temperature can be kept within the temperature limit imposed by its insulation class and the permanent magnets used is investigated. It is found that when air flow within the generator is not permitted, at rated load condition the generator temperature reaches very high levels. To lower the operating temperature, ventilation holes are introduced to the end plates of the frame. Also some blades are placed on the rotor to help flow of air over the end windings. A model is introduced to calculate the air speed in the region where air flows. Using the calculated air speed a new heat transfer coefficient is determined for the region where air flows. It is found out that with the mentioned modifications to the structure of the generator the designed generator temperature rise can be kept within the value permitted for its insulation class. Therefore, the power density of the design can be safely compared with the power density of other types of designs for direct drive turbines. It is found that DSSA-VPM generator topology offers a clear advantage over other types of generators considered in the literature. © 2017 IEEE.
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