Combined radial-axial magnetic bearing for a 1 kW, 500,000 rpm permanent magnet machine
METADATA ONLY
Loading...
Author / Producer
Date
2007
Publication Type
Conference Paper
ETH Bibliography
yes
Citations
Altmetric
METADATA ONLY
Data
Rights / License
Abstract
Ultra-high-speed and high-power-density drives are attracting much interest in today's industry. For instance, there are several investigations into mesoscale gas turbine generator systems and turbocompressors for fuel cells. In all ultra-high-speed machinery the bearing is a key technology. Therefore, this paper focuses on the design of a 500,000 rpm active magnetic bearing suitable for use in a 1 kW PM machine to complete an ultra-high-speed electrical drive system. The design procedure selects the suitable magnetic bearing type to keep the system compact and small. The electromagnetic characteristics are determined, the results for the rotor dynamic analysis are presented and the air friction losses caused by the high frequency operation are evaluated. The final design is a combined radial-axial magnetic bearing with a volume of 50 cm3.
Permanent link
Publication status
published
External links
Editor
Book title
APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition
Journal / series
Volume
Pages / Article No.
1434 - 1440
Publisher
IEEE
Event
22nd Annual IEEE Applied Power Electronics Conference (APEC 2007)
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Organisational unit
03573 - Kolar, Johann W. (emeritus) / Kolar, Johann W. (emeritus)