GOALI: Fully Superconducting Electrical Machines for Renewable Energy

本计画提出以固定式超导励磁线圈及超导双电枢转子为基础，开发一种新型超导电机。这种配置与低热泄漏结构和用于减少电枢中的AC损耗的方法相结合，使得能够实现完全超导的机器，该机器可以基于良好开发的、成本有效的、当前可用的超导材料来实现每单位质量的最高功率。智力优势：拟议的研究是变革性的：它提出了（i）一种具有前所未有的能量密度的低速、高扭矩电机的新设计，（ii）一种场和电枢都是超导的拓扑结构，（iii）一种能够开发具有无铁芯的旋转机械的线圈配置（允许场密度增加几倍），（iv）一种减少电机电枢中的热泄漏和AC损耗的方法，使得能够使用可靠的，廉价的，具有合理制冷要求的低温超导体。这将使下一代电机的设计具有无与伦比的功率密度，失超安全性，可靠性和电气性能。更广泛的影响：（i）高扭矩密度电机具有成为下一代发电系统的潜力，用于最佳功率质量比至关重要的应用，并且需要重量轻、可靠、高效的电机，例如风力涡轮机发电机、船舶推进马达和陆地车辆推进马达。(ii)对最新技术的贡献：新的线圈和机器拓扑结构，以及超导机器的设计，分析和仿真的新方法。

This project proposes the development of a new type of superconducting electrical machines based on a stationary superconducting field coil and a superconducting dual armature rotor. This configuration, combined with a low heat leak construction and a method for reducing AC losses in the armature enables a fully superconducting machine that can achieve the highest power per unit mass based on well developed, cost effective, currently available superconducting materials. Intellectual Merit: The proposed research is transformative: it proposes (i) A novel design for low speed, high torque electrical machines with unprecedented energy density, (ii) A topology where both field and armature are superconducting, (iii) a coil configuration that enables development of rotating machinery with iron-free core (allowing a several fold increase in field density), (iv) a method of reducing heat leak and AC losses in the armature of the machine, enabling the use of reliable, inexpensive, low temperature superconductors with reasonable refrigeration requirements. This will enable the design of next-generation electrical machinery with unparalleled power density, quench safety, reliability, and electrical performance. Broader Impacts: (i) High torque density electrical machines have the potential to become the next generation power generation systems for applications where optimal power to mass ratio is critical, and lightweight, reliable, efficient electrical machinery is required, such as wind turbine generators, marine propulsion motors, and land vehicle propulsion motors. (ii) Contribution to the state of the art: new coil and machine topologies, and new approaches for design, analysis and simulation of superconducting machines are presented.