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Details of Grant 

EPSRC Reference: GR/S03126/01
Title: HIGH LOAD CAPACITY MAGNETIC BEARINGS
Principal Investigator: Garvey, Professor S
Other Investigators:
Bradley, Dr KJ
Researcher Co-Investigators:
Project Partners:
Rolls-Royce Plc
Department: Sch of Mech Materials Manuf Eng Mgt
Organisation: University of Nottingham
Scheme: Standard Research (Pre-FEC)
Starts: 01 January 2003 Ends: 31 December 2005 Value (£): 289,383
EPSRC Research Topic Classifications:
Electric Motor & Drive Systems Materials testing & eng.
EPSRC Industrial Sector Classifications:
Aerospace, Defence and Marine Energy
Electronics
Related Grants:
GR/S03133/01
Panel History:  
Summary on Grant Application Form
This research will investigate the concept of parallel-airgap serial-flux magnetic bearings which develop their bearing forces as a result of magneti shear stresses acting at each one of a number of airgaps. There is no theoretical maximum to how much static force can be produced between tv components by a magnetic field in a given volume. The practical limitations have to do with mechanical constraints such as stiffness strength and dimensional stability of thin layers of material acting to bend lines of magnetic flux as they pass through. This research will probe the engineering such bearings by attempting to achieve balanced magnetic and mechanical designs in order to approach the practical limits.Since all rotating electrical machines effectively develop torque as a result of magnetic shear stress in the airgap, the present research will draw h on established methods for the design of high torque-density machines (high output coefficient) and transpose as much as possible into the desig parallel-airgap serial-flux magnetic bearings. Mechanical analysis of the dynamics and stability of the thin layers will complement the magnetic analysis of the fields to arrive at near optimal geometries and parameters for high load capacity. Prototypes will be designed, built and tested.
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Further Information:  
Organisation Website: http://www.nottingham.ac.uk