HYBRID PROPULSION SHIP OPERATION METHOD AND HYBRID PROPULSION SHIP

WIPO Patent Application WO/2020/144759

A1

[Problem] To smoothly increase propeller rotational speed with a small motor 20 to stably switch from motor propulsion to hybrid propulsion. [Solution] A hybrid propulsion ship 1 has a main engine 5, a motor 20, a slip clutch 7, and a propeller. As for the rotational speed of the propeller, a second rotational speed which is obtained by driving the propeller at an idle rotation speed with the main engine is higher than a first rotational speed which can be achieved by driving the propeller with the motor alone. First step: The clutch is disengaged, and the propeller is driven by the motor alone so that the propeller rotational speed becomes equal to or lower than the first rotational speed. Second step: The power of the main engine is transmitted while the clutch is slipping to increase the propeller rotational speed to the second rotational speed. Third step: The propeller is driven by the main engine alone or both the main engine and the motor so that the propeller rotational speed becomes the second rotational speed or higher with the clutch directly engaged.

JPH08207893	ELECTRIC PROPULSION DEVICE FOR SHIP
JP5612959	Motor system for ships
JP5762262	Ship power generators and propulsion devices

HATAMOTO TAKURO (JP)
TASHIRO SHINJI (JP)
HARADA YOTA (JP)

PCT/JP2019/000309

July 16, 2020

January 09, 2019

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IHI POWER SYSTEMS CO LTD (JP)

B63H21/20; B63H21/14; B63H21/17; B63H21/21; B63H23/12; B63H23/30

JP2004255972A	2004-09-16
JP2013132967A	2013-07-08

NISHIMURA, Norimitsu et al. (JP)

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