(19)
(11) EP 2 236 409 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.10.2012 Bulletin 2012/40

(43) Date of publication A2:
06.10.2010 Bulletin 2010/40

(21) Application number: 10158673.3

(22) Date of filing: 31.03.2010
(51) International Patent Classification (IPC): 
B63H 23/24(2006.01)
B63J 3/04(2006.01)
 B63H 21/17(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated Extension States:
AL BA ME RS

(30) Priority: 02.04.2009 JP 2009090056

(71) Applicant: Dai-Ichi Electric Co., Ltd.
Fujisawa-shi, Kanagawa 251-0002 (JP)

(72) Inventors:
  • Ito, Masanori
    Koto-Ku Tokyo (JP)
  • Sato, Hiroshi
    Fujisawa-Shi Kanagawa (JP)

(74) Representative: Collin, Jérôme et al
Cabinet Regimbeau 20, rue de Chazelles
75847 Paris Cedex 17
75847 Paris Cedex 17 (FR)

   


(54) Electric propulsion system for ships


(57) There is provided an electric propulsion system for a ship in which the cargo capacity of the ship is enhanced while the ship speed of the dead slow or less can be controlled. The electric propulsion system includes a variable speed engine (2), a synchronous generator (3) that generates electricity by the variable speed engine, an induction motor (6) that is connected to the synchronous generator, and a fixed-pitch propeller (7) that is driven by the induction motor.







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