Over-load capacity of tubular permanent magnet linear motors


Benarous, M. and Eastham, F., 2009. Over-load capacity of tubular permanent magnet linear motors. In: 2009 IEEE International Electric Machines and Drives Conference, IEMDC 2009.Vol. 2009. IEEE Computer Society, pp. 606-610. (IEEE International Electric Machines and Drives Conference)

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The magnetic limit on the force produced by a tubular permanent linear motor can be taken to be reached when the armature mmf is sufficient to reduce the magnet flux to zero in one area of the magnet. It is shown that this limit is greater when the construction uses embedded magnets than when surface magnets are used. In both cases the limit may be extended by the use of quadrature-axis flux barriers. These reduce the armature flux and therefore the demagnetizing effect whilst leaving the permanent magnet field largely unaffected. 2009 IEEE.


Item Type Book Sections
CreatorsBenarous, M.and Eastham, F.
Uncontrolled Keywordselectric drives,magnetic devices,permanent magnets,linear motors,electric machinery,motors
DepartmentsFaculty of Engineering & Design > Electronic & Electrical Engineering
ID Code16179


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