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Title:
ROTOR FOR A PERMANENT-MAGNET MACHINE
Document Type and Number:
WIPO Patent Application WO/2013/020846
Kind Code:
A3
Abstract:
Rotor (1, 1') for a permanent-magnet machine (14, 14') comprising a plurality of permanent magnets (5) arranged in the interior of the rotor (1, 1') that define poles (7), wherein - the rotor (1, 1') consists of at least two individual rotor discs (8) one coaxially following another, having the same radius, particularly identical disks, with an equal number of poles (7) of equal extension in the peripheral direction, - wherein the rotor discs (8) are separated by at least one respective axial flux barrier (11) preventing a magnetic flux between the rotor discs (8) and - wherein the poles (7) of adjacent rotor discs (8) are arranged offset from one another in the circumferential direction by a predetermined offset angle that is smaller than the angular extension of a pole (7) in the circumferential direction.

Inventors:
KLOEPZIG MARKUS (DE)
SCHRAMM MARCO (DE)
Application Number:
PCT/EP2012/064858
Publication Date:
April 04, 2013
Filing Date:
July 30, 2012
Export Citation:
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Assignee:
SIEMENS AG (DE)
KLOEPZIG MARKUS (DE)
SCHRAMM MARCO (DE)
International Classes:
H02K21/16; H02K1/27; H02K29/03
Domestic Patent References:
WO2006032635A12006-03-30
WO2007004009A22007-01-11
Foreign References:
JP2000308287A2000-11-02
DE102008020779A12009-11-05
DE102004030831A12005-01-20
JP2006060952A2006-03-02
EP2117102A12009-11-11
US20110050022A12011-03-03
Other References:
LI ZHU ET AL: "Analytical Methods for Minimizing Cogging Torque in Permanent-Magnet Machines", IEEE TRANSACTIONS ON MAGNETICS, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 45, no. 4, 1 April 2009 (2009-04-01), pages 2023 - 2031, XP011253836, ISSN: 0018-9464, DOI: 10.1109/TMAG.2008.2011363
Attorney, Agent or Firm:
SIEMENS AKTIENGESELLSCHAFT (München, DE)
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