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Patent Searching and Data


Title:
ELECTRIC MOTOR HAVING RELUCTANCE AUXILIARY TORQUE
Document Type and Number:
WIPO Patent Application WO/2015/000915
Kind Code:
A3
Abstract:
The invention relates to an electric motor (150) comprising: a permanently magnetic rotor (152); a stator (154) having a stator core (200; 300), on which a stator winding assembly (155) is arranged and which produces a reluctance auxiliary torque in interaction with the rotor (152), wherein the stator core (200; 300) comprises an iron core (250; 350), which is made of a first material, and at least one flux-collecting apparatus (260, 270), which is made of a second material and which is arranged on an axial end (252, 254) of the iron core (250; 350), wherein the first material has lower alternating-field losses than the second material, wherein the iron core (250; 350) is designed to transmit a driving torque to the rotor (152), and wherein the flux-collecting apparatus (260, 270) is designed to produce the reluctance auxiliary torque in order to effect a positioning of the rotor (152) in at least one specified rest position in the currentless state of the stator winding assembly (155), in which at least one specified rest position a torque on the rotor (152) can be produced by the stator winding assembly (155).

Inventors:
BERROTH, Hansjoerg (Birkwaldstr. 13, VS-Obereschach, 78052, DE)
MAUCH, Volker (Bitzentheileweg 17, Dunningen, 78655, DE)
Application Number:
EP2014/063986
Publication Date:
July 23, 2015
Filing Date:
July 01, 2014
Export Citation:
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Assignee:
EBM-PAPST ST. GEORGEN GMBH & CO. KG (Hermann-Papst-Str. 1, St. Georgen, 78112, DE)
International Classes:
H02K1/16; H02K1/14; H02K21/22; H02K29/03; H02K1/02; H02K3/50
Foreign References:
GB872430A
US3812392A
Attorney, Agent or Firm:
RAIBLE, Tobias et al. (Bolzstra├če 3, Stuttgart, 70173, DE)
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