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Mohammed Alqarni
College of Engineering, University of Business and Technology (UBT), Jeddah 23846, Saudi Arabia

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Journal article
Published: 31 May 2021 in Applied Sciences
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The acceleration time of induction machines (IMs) is essential for proper protection-relay settings of the machine to prevent voltage sags in local power areas. In this paper, mathematical modeling of IMs’ speed-time characteristics during no-load direct startup has been presented. Unlike the approaches presented in the literature, the proposed approach includes the bearing losses, in which two expressions of the speed-time characteristics of IMs during no-load direct startup are derived. The first expression was derived based on the Kloss equation used for representing the torque, and the second expression was derived based on the torque expression determined from the Thevenin equivalent circuit of the machine. The derived expressions’ accuracy was validated using laboratory measurement and computer simulation approaches. The results obtained show a good agreement between the measured and simulated speed-time characteristics of two IMs. Finally, the proposed formulations can provide a simple analytical base to enable accurate IM modeling.

ACS Style

Martin Ćalasan; Mohammed Alqarni; Marko Rosić; Nikola Koljčević; Basem Alamri; Shady Abdel Aleem. A Novel Exact Analytical Solution Based on Kloss Equation towards Accurate Speed-Time Characteristics Modeling of Induction Machines during No-Load Direct Startups. Applied Sciences 2021, 11, 5102 .

AMA Style

Martin Ćalasan, Mohammed Alqarni, Marko Rosić, Nikola Koljčević, Basem Alamri, Shady Abdel Aleem. A Novel Exact Analytical Solution Based on Kloss Equation towards Accurate Speed-Time Characteristics Modeling of Induction Machines during No-Load Direct Startups. Applied Sciences. 2021; 11 (11):5102.

Chicago/Turabian Style

Martin Ćalasan; Mohammed Alqarni; Marko Rosić; Nikola Koljčević; Basem Alamri; Shady Abdel Aleem. 2021. "A Novel Exact Analytical Solution Based on Kloss Equation towards Accurate Speed-Time Characteristics Modeling of Induction Machines during No-Load Direct Startups." Applied Sciences 11, no. 11: 5102.

Journal article
Published: 11 March 2021 in Energies
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This paper examines the specifications of lithium battery cells, which are considered one of the most vital sources for electrical energy storage units. The specifications have been covered to associate battery performance with its usage for electrically powered motor vehicles. With the motivation of rapid deployment of electric vehicles (EVs) around the world, the key contribution of this study is to provide a comparative investigation of well-known commercially available Li-ion battery cells used as a pack for electric race car. Five lithium cells from different manufacturers were analyzed for start voltage, end voltage, current, and the use of active cooling under different test conditions. Thermal imaging was used to provide more comprehensive analysis of tested battery packs. The outcomes of this experimental investigation are described in the sections below in the order in which the analyses were conducted. The key findings of this study are presented in the conclusion section.

ACS Style

Khaled Sehil; Basem Alamri; Mohammed Alqarni; Abdulhafid Sallama; Mohamed Darwish. Empirical Analysis of High Voltage Battery Pack Cells for Electric Racing Vehicles. Energies 2021, 14, 1556 .

AMA Style

Khaled Sehil, Basem Alamri, Mohammed Alqarni, Abdulhafid Sallama, Mohamed Darwish. Empirical Analysis of High Voltage Battery Pack Cells for Electric Racing Vehicles. Energies. 2021; 14 (6):1556.

Chicago/Turabian Style

Khaled Sehil; Basem Alamri; Mohammed Alqarni; Abdulhafid Sallama; Mohamed Darwish. 2021. "Empirical Analysis of High Voltage Battery Pack Cells for Electric Racing Vehicles." Energies 14, no. 6: 1556.