Title:
ELECTRIC MACHINE WITH DAMPER SHIELD
Document Type and Number:
WIPO Patent Application WO/2013/026693
Kind Code:
A3
Abstract:
The power density of electric motors is intended to be increased. For this purpose, an electric machine with a rotor (1) and a stator (2), which is arranged coaxially with the rotor, is proposed. Permanent magnets (3) are arranged on a side of the rotor (1) which faces the stator (2). There is a gap (6) between the rotor (1) and the stator (2). The rotor (1) has a tubular damper shield (5) consisting of an electrically conductive and magnetically nonconductive material on those sides of the permanent magnets (3) which face the stator (2). This results in eddy current losses in the damper shield (5) and not in the permanent magnets (3), with the result that said permanent magnets are heated to a lesser extent.
Inventors:
KLOEPZIG MARKUS (DE)
KUMMETH PETER (DE)
SCHMIDT HEINZ (DE)
KUMMETH PETER (DE)
SCHMIDT HEINZ (DE)
Application Number:
PCT/EP2012/065389
Publication Date:
November 14, 2013
Filing Date:
August 07, 2012
Export Citation:
Assignee:
SIEMENS AG (DE)
KLOEPZIG MARKUS (DE)
KUMMETH PETER (DE)
SCHMIDT HEINZ (DE)
KLOEPZIG MARKUS (DE)
KUMMETH PETER (DE)
SCHMIDT HEINZ (DE)
International Classes:
H02K21/22; H02K1/27; H02K9/19; H02K11/00
Foreign References:
| DE102009029274A1 | 2011-03-10 | |||
| EP2109206A1 | 2009-10-14 |
Attorney, Agent or Firm:
SIEMENS AKTIENGESELLSCHAFT (München, DE)
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