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Title:
ELECTRIC PROPULSION SYSTEM FOR SHIP
Document Type and Number:
Japanese Patent JP2014180942
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an inverter-less electric propulsion system for a ship which directly supplies electric power generated by a generator to an electric motor for ship propulsion.SOLUTION: An electric propulsion system for a ship 1 comprises: a propeller 2; an electric motor 3 which rotates the propeller 2; a generator 4 which supplies drive voltage for driving the electric motor 3 to the same; a target value output section 5 which receives input of set rotation speed N of the generator 4 and outputs set voltage V to be target output voltage of the generator 4 after adjusting the same in a manner that applies predetermined boost voltage to output voltage, in a low rotation speed range, of the generator 4 calculated from the set rotation speed N; and a generator control section 6 which receives the input of an output voltage measurement value of the generator 4 and the target output voltage of the generator 4 and controls field voltage of the generator 4 so that the output voltage measurement value coincides with the target output voltage of the generator 4.

Inventors:
ITO MASANORI
ZHANG FEIFEI
SATO HIROSHI
SHIMANO TAKAAKI
Application Number:
JP2013056951A
Publication Date:
September 29, 2014
Filing Date:
March 19, 2013
Export Citation:
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Assignee:
DAIICHI ELECTRIC
International Classes:
B63H21/17; B63J3/04; H02P9/14
Domestic Patent References:
JP2007089315A2007-04-05
JP2009038851A2009-02-19
JPH06292386A1994-10-18
JP2014501201A2014-01-20
JPH05219767A1993-08-27
Foreign References:
WO2012089845A22012-07-05
Attorney, Agent or Firm:
Katsunuma Hirohito
Yasukazu Sato
Kawasaki εΊ·
Takeshi Sekine
Masashi Yoshida



 
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