Limits, modeling and design of high-speed permanent magnet machines

Limits, modeling and design of high-speed permanent magnet machines

Borisavljevic, A.

Ferreira, J.A. (promotor)
Polinder, H. (promotor)

Electrical Engineering, Mathematics and Computer Science

Electrical Power Engineering

2011-08-15

There is a growing number of applications that require fast-rotating machines; motivation for this thesis comes from a project in which downsized spindles for micro-machining have been researched (TU Delft Microfactory project). The thesis focuses on analysis and design of high-speed PM machines and uses a practical design of a high-speed spindle drive as a test case. Phenomena, both mechanical and electromagnetic, that take precedence in high-speed permanent magnet machines are identified and systematized. The thesis identifies inherent (physical) speed limits of permanent magnet machines and correlates those limits with the basic parameters of the machines. The analytical expression of the limiting quantities does not only impose solid constraints on the machine design, but also creates the way for design optimization leading to the maximum mechanical and/or electromagnetic utilization of the machine. The models and electric-drive concepts developed in the thesis are evaluated in a practical setup which includes a slotless PM motor with a short rotor supported by aerostatic bearings.

permanent magnet machines
permanent magnet motors
high speed machines
micro milling
high speed spindle
slotless PM machines

http://resolver.tudelft.nl/uuid:02c53742-c5d2-419c-88f0-a0761cec9856

9789085708377

Institutional Repository

doctoral thesis

(c) 2011 Borisavljevic, A.