Results for “LiBeN” | Engineering Papers

DOE OSTI2020

Materials Data on LiBeN by Materials Project

LiBeN crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Li1+ is bonded in a 4-coordinate geometry to four equivalent N3- atoms. There are a spread of Li–N bond distances ranging from 2.09–2.24 Å. Be2+ is bonded in a trigonal planar geometry to three equivalent N3- atoms. There are a spread of Be–N bond distances ranging from 1.62–1.68 Å. N3- is bonded in a 7-coordinate geometry to four equivalent Li1+ and three equivalent Be2+ atoms.

36 MATERIALS SCIENCE↗

DOE OSTI2023

Implementation of a Metamodel-Based Optimization for the Design of a High Power Density Wound Field Traction Motor

Traction motors onboard electric vehicles (EVs) are faced with ever-increasing power density requirements and cost reduction challenges. Although permanent magnet (PM) traction motors have been favored for their potential of higher power densities, the price and supply volatility of PM materials are the major drawbacks. Instead of a single load point, the performance of a traction motor needs to be optimized over various combinations of torque and speed to represent real-world vehicular driving scenarios, which tends to be a time-consuming task with direct optimizations. In this study, as a PM-free solution, a wound field synchronous motor (WFSM) is designed and optimized using a metamodel-based approach to maximize its efficiency over a custom set of load points, while utilizing a fully per-unitized geometry template. The workflow has proven to be timesaving and the optimal design is prototyped and tested.

33 ADVANCED PROPULSION SYSTEMS↗