/library/oar/handle/123456789/16863 2025-12-24T15:42:39Z /library/oar/handle/123456789/142440 Title: Design optimization of a starter generator for more sustainable high power density aerospace applications Authors: Devito, Giampaolo; Theofanous, Antonis; Barater, Davide; Nuzzo, Stefano Abstract: The surface-mounted permanent magnet synchronous motor has found widespread use across various sectors, owing to its outstanding characteristics of torque density, efficiency and ease of control. These features, particularly crucial in the aviation field, make this type of machine highly desirable, especially in fixed-speed applications such as single-speed starter-generators. Additional performance metrics usually required nowadays in transportation are the sustainability and the overall environmental impact of components and systems. In this context, this paper proposes the design of a surface-mounted permanent magnet synchronous motor for a fixed-speed starter-generator, emphasizing all these different performance requirements. The design process is based on finite element (FE) optimizations, achieving a number of possible optimal configurations from an electromagnetic point of view, but giving then priority to the most environmentally friendly solutions. The outputs under examination are efficiency, power density, total harmonic distortion, torque ripple, copper and permanent magnet quantities, and temperatures. A motor characterized by a power density exceeding 2,3 kW/kg, 98% efficiency, and reduced copper and permanent magnet content is obtained. 2024-11-01T00:00:00Z /library/oar/handle/123456789/141945 Title: A comprehensive review of solar PV Integration with smart-grids : challenges, standards, and grid codes Authors: Rajendran, Gowthamraj; Raute, Reiko; Caruana, Cedric Abstract: Promoting a sustainable and low-carbon energy future through the integration of renewable energy is essential, yet it presents significant challenges due to the intermittent nature of resources such as solar and wind. This paper examines the technological and economic dimensions of AC, DC, and smart grids, concentrating on the optimization of costs, efficiency, stability, and scalability. Smart grids, enhanced by AI, IoT, and blockchain technologies, play a vital role in energy management optimization, predictive maintenance, and secure energy transactions. Furthermore, the incorporation of renewable energy sources, especially photovoltaics, presents challenges including intermittency, voltage fluctuations, and grid congestion. This paper emphasizes the necessity for updated grid codes and policies that guarantee system stability and the effective functioning of renewable energy systems. The implementation of these regulatory frameworks is crucial for facilitating the efficient integration of renewable energy into the grid, ensuring a reliable and secure power supply while advancing sustainability efforts. 2025-01-01T00:00:00Z /library/oar/handle/123456789/141557 Title: Exciting forces and overturning moment on submerged coaxial cylindrical plates in water Authors: Borah, Pankaj; Hassan, Mohammad; Tran, Tien Anh; Konch, Nijara Abstract: In the present study, we consider a submerged composite geometrical shape in water which contains two cylindrical plates of finite depth. The present problem of diffraction of these composite structures approach theoretically under the assumption of linear water wave theory. We use eigenfunction expansion method and separation of variable method to obtain an analytical expression of diffracted velocity potential for each region. The analytical expression also allows us to compute the exciting forces and overturning moment of the cylinders due to diffraction. Also, the theoretical results are presented graphically for various parameters of the proposed geometrical structure. The graphs of vertical and horizontal forces and moment have shown significant behaviour within the smaller value of wavenumbers. Further, the forces and moments diminish for higher value of wavenumber. A comparison with the result given by Yao et al. Sarkar and Bora and Ning et al. is presented which demonstrates good agreement of our present result. Also, we estimate Root Mean Square Error (RMSE) for the compared results and it is shown less than . From the amplitude of exciting forces and moment, we can estimate the measure of capture-width ratio(CRW). The results shows that maximum CRW obtained for smaller value of radius. These findings can help to better understood the hydrodynamic response of composite oscillating water column (OWC) which can also help to optimize wave energy applications. 2026-01-01T00:00:00Z /library/oar/handle/123456789/140754 Title: Advances in emerging technologies and computing innovations Authors: Ghonge, Mangesh M.; Liu, Haipeng; Khan, Mudassir; Tran, Tien Anh Abstract: International Conference on Emerging Technologies and Computing Innovations (ICETCI 2025) covers discussions from different stakeholders, researchers, practitioners, and industries across the globe in the recent technology trends and their impact on human life. This book discusses a microcosm of the conference experience bringing together multi-disciplinary research, real-world applications, and tomorrow’s aspirations. As all papers are double-blind peer-reviewed and of high quality, the proceedings are a unique publication dealing with a variety of topics such as artificial intelligence, machine learning, blockchain, quantum computing, Internet of Things (IoT), cybersecurity, data science, edge computing, and sustainable technology solutions. No contributions reflect the leading-edge breakthroughs, imaginative practices, and influential examples that are abundantly illustrative of the reader as if the reader is viewing the technical realm through a telescope into the future, full of contexts that would change how we connect and work. With the ushering in of a new era, additional technologies will power world progress, transforming businesses, economies, and societies. ICETCI-2025 is therefore important since digitization changes are happening across the world at a rapid pace. Also, this book is a codification of this partnership, through novel thinking and transformative research that will help solve some of the biggest challenges of today’s time. The depth of the topics signals the multifaceted reality of the topic and also highlights how innovation can span those boundaries and lead to transformative change. Apart from academic rigor, there are also practical aspects and future directions discussed in the proceedings. Whether it’s exploring discussions on the role of AI in healthcare or education, or others on the emerging potential of blockchain within supply chain management, contributions here have practical lessons for researchers, practitioners, and policymakers. The volume stands as a curatorial jeopardy that connects theory and praxis to engender outcomes and yield in the global tech ecology 2025-01-01T00:00:00Z