ORGANIZATION : 한국자동차공학회 추계학술대회 및 전시회
JOURNAL :
YEAR : 2018.11
VOL :
PAGE : 1141-1145
In this paper, the rotor design of ultra-high-speed synchronous motor for hydrogen fuel cell electric vehicle considering mechanical stress is carried out. The rotor consists of shaft, permanent magnet, and sleeve. Airgap magnetic flux density, which determines the electrical characteristics, is calculated using spatial harmonic analysis. The mechanical stress was estimated using the equations calculated from the equilibrium equations and the safety factor of permanent magnet and sleeve are calculated based on the von-Mises theory. The rotor is designed to have a safety factor of 1.1 or higher at a maximum speed of 110krpm and a driving remperature of 200℃, while satisfying the target airgap magnetic flux density. Then, airgap magmetic flux density and mechanical stress of the designed rotor were verified using finite element analysis.