Rotordynamics of 120 000 r/min 15 kW Ultra High Speed Motor

被引：45

作者：

Hong, Do-Kwan ^{[1
]}

Woo, Byung-Chul ^{[1
]}

Koo, Dae-Hyun ^{[1
]}

机构：

[1] Korea Electrotechnol Res Inst, Elect Motor Res Ctr, Chang Won 641120, South Korea

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2009年 / 45卷 / 06期

关键词：

Campbell diagram; critical speed; interference; natural frequency; permanent magnet; rotordynamics; shrink fit; sleeve; ultra high speed;

D O I：

10.1109/TMAG.2009.2018682

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper introduces a rotor with shrink fit and analyzes its rotordynamics by 3-D FEA. An ultra high speed motor prototype is manufactured for fuel cells at the rating of 15 kW, 120 000 r/min. First, the stability of the rotor structure with shrink fit is evaluated in non-loading and loading condition (120 000 r/min, 210 degrees C). And then the 3-D rotordynamics analysis and Campbell diagram considering shrink fit are examined for the critical speed of rotor. The analysis shows that the critical speed of the rotor is higher when the rotor is shrink fitted than when the rotor is not shrink fitted. The analysis also shows the increase of shaft stiffness when the rotor is shrink fitted.

引用

页码：2831 / 2834

页数：4