基于磁路法与等效热网络法的航天 永磁同步电机设计与仿真

针对航天永磁同步电机方案初步设计耗时长、过度依赖商业软件的问题，基于磁路法和热网络法，提出了一套方案设计阶段航天永磁同步电机磁热性能快速预估与仿真方法。给出了定子内径、定子外径、铁芯长度、匝数等关键参数的取值准则，建立了包含36个节点集总参数热网络模型，并以端部绕组为例给出了热平衡方程的详细推导过程。通过与成熟商业软件对比，其电磁计算最大误差出现在电流有效值上，偏差值为607%；与样机实测值对比，绕组温升最大误差为73%，满足方案设计阶段预示精度要求，为方案设计阶段航天永磁同步电机快速性能预估提供有力支撑。

Aerospace Permanent Magnetic Synchronous Motor Design and Simulation Based on Magnetic Circuit Method and Equivalent Thermal Network Method

With the applications of ceramic matrix composites such as C/SiC, performance of high speed vehicles is increasing fast. However, the multi-scale features of C/SiC, together with complex effects of aerodynamic force, high temperature and oxidation environments, bring great challenges for the property assessment and verification of materials and structures based on virtual test. Through atomic modeling, molecular dynamics can predict materials'' behaviors in complex environment from the bottom-up. This paper firstly reviewed the basic theory of molecular dynamics and it''s recent progress in C/SiC simulations, and then discussed the prospects of molecular dynamics simulations on materials technology, structural failures analysis and development of virtual test technology.