Electrical Thermal Characterisation Tools for Integrated Power and Thermal Management Modelling

该项目是与劳斯莱斯英国公司合作，支持更多电动发动机和飞机的开发。航空业正在努力实现统一的动力架构，其中所有二次动力需求都由共同的电力供应来满足，消除了发动机的液压和气动动力输出，并使其能够在最有效的条件下运行。这种模式的自然延伸导致了推进系统本身的电气化，从而实现了可能改变行业未来面貌的混合动力和全电动飞机概念。通过动力装置综合、分布式推进和新的空气动力学概念的相关发展，这种过渡有可能使飞机设计空间更大，并使整个飞行器的效率发生阶跃变化。在环境和社会经济问题日益严重的情况下，这可能对温室气体排放和运输业产生的噪音产生重大的积极影响。要实现这一技术转型，需要解决许多研究问题和挑战;此外，电气化概念代表了一个习惯于保守、渐进式改进以推动技术和业务的行业的颠覆性变化。该项目的重点是电力系统的热特性，可能会促进这种过渡。最初的重点是通过比较现有和未来的电动飞机与其飞行包线，从整体角度量化效益。这将针对一系列潜在的飞机尺寸和飞行剖面进行研究，并在效率、重量和排放方面研究由此产生的好处。然后，该项目建立在这些分析的基础上，以确定支持未来设计的电热特性的关键要素，并寻求开发适当的模型，以优化和提供系统级的热性能预测，通过实验支持。最终目标是确定现有方法的局限性，并为新的电机设计及其功率转换系统提供优化方法，这将需要实现电动飞机作为未来的主要航空运输方法。目的和目标1.评估现有和未来电动飞机执行多个潜在任务的质量/排放/燃料消耗方面的效益。2.从热响应的角度评价电动飞机的瞬态特性。3.确定对飞机和机器设计影响最大的关键要素。4.为了评估多个电气架构，目前集中在电机和相关的传输系统，在以下方面：a。功率密度B。马斯角线圈设计d.冷却方法5.开发理论和数值模型，并根据经验验证这些模型，以便能够优化电气设计。研究方法的新奇1.通过与劳斯莱斯的合作，该项目将获得工业专业知识，以确保与工业环境相关的比较和计算。2.新的线圈的几何形状和配置，传热特性和冷却方法的评估进行，结合新的分析解决方案，这个问题的发展。3.将开发新的方法来解决电气飞机在热响应方面的瞬态性质，跨越一系列电机尺寸和功率密度。该项目福尔斯属于EPSRC能源、工程和数学与物理科学研究主题，包括以下研究领域，列在网站www.epsrc.ac.uk/research/ourportfolio/themes/上。

This project is a collaboration with Rolls-Royce UK supporting the development of more-electric engines and aircraft. The aviation industry is striving towards a unified power architecture where all secondary power demands are met by a common electrical supply, eliminating hydraulic and pneumatic power off-takes from engines and allowing them to run at their most efficient conditions. A natural extension of this paradigm leads to the electrification of the propulsion system itself, enabling hybrid- and all-electric aircraft concepts that may change the future face of the industry. Through associated developments in powerplant integration, distributed propulsion and novel aerodynamic concepts this transition has the potential to enable a much broader aircraft design space and provide a step change in overall vehicle efficiency. This could have a major positive impact on both greenhouse gas emissions and the noise generated by the transportation industry in the context of increasing environmental and socio-economic concerns. There are many research questions and challenges that need to be addressed to realise this technological transition; further, the electrification concept represents a disruptive change to an industry that is used to conservative, incremental improvements to drive technology and business. This project focusses on the thermal characterisation of electrical power systems that may facilitate such a transition. Initially the focus is to quantify the benefits from a holistic perspective through a comparison of existing and future electrical aircraft in line with their flight envelopes. This will be examined for a range of potential aircraft sizes and flight profiles, examining the resulting benefits in terms of efficiency, weight and emissions. The project then builds upon these analyses to identify the critical elements that underpin electro-thermal characterisation of future designs and seeks to develop appropriate models with a view to optimisation and to provide system-level thermal performance projections, supported through experiments. The end-goal is to define the limitations of existing approaches and provide optimisation methodologies for novel electrical machine designs and their power conversion systems which will be required to realise the electrical aircraft as the primary air transportation method of the future. Aims and objectives1. To evaluate the benefits in terms of mass/emissions/fuel consumption of multiple potential missions undertaken by existing and future electrical aircraft. 2. To evaluate the transient nature of electrical aircraft in terms of their thermal response. 3. To identify the critical elements that have the largest impact on aircraft and machine designs. 4. To evaluate multiple electrical architectures, currently focussed on electrical machine and associated transmission systems, in terms of:a. power density b. mass c. coil designs d. cooling methodologies 5. To develop theoretical and numerical models, and to validate such models empirically, in order to be able to optimise electrical designs. Novelty of the research methodology1. Through working with Rolls-Royce, this project will have access to industrial expertise that will ensure comparisons and calculations relevant to the industrial environments. 2. Evaluation of novel coil geometries and configurations, heat transfer characteristics and cooling methodologies are to be undertaken, combined with the development of novel analytical solutions to this problem. 3. Novel methods will be developed to address the transient nature of electrical aircraft in terms of thermal response, across a range of electrical machine sizes and power densities. This project falls within the EPSRC Energy, Engineering and Mathematical and Physical Sciences research themes, encompassing the below research areas, listed on the website www.epsrc.ac.uk/research/ourportfolio/themes/ This project is part-sponsored by Rolls-Royce