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Title:
PERMANENT MAGNET ELECTRIC MOTOR AND GENERATOR AND HYBRID MOTOR COMPRISING IT IN A SCOOTER
Document Type and Number:
WIPO Patent Application WO/2016/016874
Kind Code:
A3
Abstract:
An electric motor-generator (1) of the type with permanent magnets with three-phase radial flow, comprising a stator having a plurality of teeth (3), each one provided with a respective electric winding (5) implemented by a conducting wire and with a respective heading polar expansion (4), divided into groups corresponding each one to a phase, allows an easy implementation of the windings in the motor (1) itself by using teeth (3) of the stator with even relevant sizes, by obtaining at the same time a reduced short-circuit current which produces a smaller fatigue of the battery during the recharge phase, wherein the electric windings (5) of each single tooth (3) of each group are connected therebetween in parallel, wherein the distance between adjacent polar expansions is the minimum one so as to allow the passage of a conducting wire and wherein, by identifying a first magnetic circuit comprising two adjacent teeth (3), the respective rotor and stator yokes, the thicknesses of the respective permanent magnets and the corresponding air gap, and a second magnetic circuit comprising two adjacent teeth (3), the respective rotor yokes, the respective halves of the faced polar expansions (4) of said adjacent teeth (3).

Inventors:
CAPOZZELLA PAOLO (IT)
BERNARDINI ROBERTO (IT)
Application Number:
PCT/IB2015/055882
Publication Date:
April 21, 2016
Filing Date:
August 03, 2015
Export Citation:
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Assignee:
PIAGGIO & C SPA (IT)
International Classes:
B60L7/14; B60L50/16; H02K1/14; H02K1/27; H02K7/00
Foreign References:
EP1104077A22001-05-30
EP1624230A22006-02-08
JP2000103384A2000-04-11
Attorney, Agent or Firm:
LEONE, Mario et al. (Viale Della Tecnica 205, Rome, IT)
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