Improvement of efficiency and robustness of power superconducting devices through high performance simulation tools and extended resistivity models

通过高性能仿真工具和扩展电阻率模型提高电力超导装置的效率和鲁棒性

• 批准号: 327720-2011
• 负责人: Sirois, Frédéric
• 金额: $ 2.91万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=572115
• 关键词: Improvement; efficiency; robustness; power; superconducting

In industrialized countries, the expansion of power systems is increasingly complex. High temperature superconductors (HTS) is considered as one of the enabling technologies for solving a number of currently challenging issues. In particular, superconducting equipments are about 50% smaller and lighter than their conventional counterpart, and withstand more easily temporary overload, which is critical to peak load management. HTS materials also have the unique property of being natural fault current limiters, a property with no classical counterpart and which opens new doors for operating power systems. The ultimate goal of this research program is to "enable a new generating of compact, lightweight and energy efficient power devices for solving major bottleneck and security of supply issues on power systems". Over the next 5 years, the following objectives will be addressed: A1) Characterize the resistivity of commercial HTS wires over their whole current and temperature range of operation, in order to allow full CAD design of fault current limiters (or other applications) A2) Propose empirical mathematical models of the resistivity of superconducting materials valid over the whole range of practical environmental parameters (data sheet-like) B1) Identify the best electromagnetic formulations for solving low frequency Maxwell equations in presence of i) highly non-linear resistivity, and ii) interfacial resistances B2) Find ways to handle very large problems, such as 3-D geometries (e.g. cables) or 2-D geometries in which hundreds of conductors interact together (e.g. coils, which implies hundreds of constraints) C1) Derive a rigorous explanation of the current transfer mechanisms between the different layers of HTS coated conductors and propose efficient ways to improve their thermal stability C2) Improve our understanding of the interaction between HTS and ferromagnetic materials in coil and cable applications, in order to further reduce AC losses

在工业化国家，电力系统的扩张变得越来越复杂。高温超导体(HTS)被认为是解决当前许多具有挑战性问题的使能技术之一。特别是，超导设备比传统的超导设备小50%左右，重量轻50%，更容易承受暂时的过载，这对高峰负荷管理至关重要。高温超导材料还具有天然故障限流器的独特特性，这是一种没有经典限流器的特性，它为运行电力系统打开了新的大门。 这项研究计划的最终目标是“为解决电力系统的主要瓶颈和供电安全问题，实现紧凑、轻便和节能的新一代电力设备”。在未来5年内，将实现以下目标： A1)描述商用高温超导导线在其整个运行电流和温度范围内的电阻率，以便进行故障电流限制器(或其他应用)的全面CAD设计 A2)提出在整个实际环境参数范围内有效的超导材料电阻率的经验数学模型(如数据表) B1)确定在存在i)高度非线性电阻率和ii)界面电阻的情况下求解低频麦克斯韦方程的最佳电磁公式 B2)找到方法来处理非常大的问题，例如三维几何图形(例如电缆)或其中数百个导体相互作用的二维几何图形(例如线圈，这意味着数百个约束) C1)对高温超导涂层导体不同层之间的电流传输机制进行了严格的解释，并提出了提高其热稳定性的有效方法 C2)提高我们对高温超导和铁磁材料在线圈和电缆应用中的相互作用的理解，以便进一步减少交流损耗