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Title:
ELECTRIC MARINE PROPULSION DEVICE WITH INTEGRAL MAGNETIC GEARING
Document Type and Number:
WIPO Patent Application WO/2010/109248
Kind Code:
A3
Abstract:
A propulsion device for a marine vessel, the propulsion device comprising an electrical machine (205) with integral magnetic gearing, which comprises three members, namely a first or inner rotor (102) comprising a first plurality of permanent magnets (106), a second rotor (107) in the form of a plurality of ferromagnetic pole pieces (108), and a stator (116) which is associated with a plurality of 3-phase windings (302) and to the periphery of which a plurality of second permanent magnets (110) are fixed. The magnetic pole piece rotor (107) is connected to a drive shaft (300) provided with a propulsion means (201) for providing propulsion to the marine vessel. The first or inner rotor (102) is free to rotate about the drive shaft (300). The pole pieces (108) of the second rotor (107) are arranged to magnetically couple the permanent magnets (106) of the first or inner rotor (102) to the second permanent magnets (110) on the stator (116).

Inventors:
CALVERLEY STUART (GB)
POWELL DAVID (GB)
Application Number:
PCT/GB2010/050518
Publication Date:
January 06, 2011
Filing Date:
March 26, 2010
Export Citation:
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Assignee:
MAGNOMATICS LTD (GB)
CALVERLEY STUART (GB)
POWELL DAVID (GB)
International Classes:
B63H23/24; H02K49/10; H02K51/00
Domestic Patent References:
WO2003075437A12003-09-12
Foreign References:
GB2437568A2007-10-31
EP1964770A12008-09-03
GB190926346A1910-09-29
GB1401461A1975-07-16
Attorney, Agent or Firm:
HLBBSHAW et al. (Falconry CourtBaker's Lane,Epping, Essex CM16 5DQ, GB)
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