Prime-mover dynamo plants – Tide and wave motors
Reexamination Certificate
2007-08-07
2007-08-07
Waks, Joseph (Department: 2834)
Prime-mover dynamo plants
Tide and wave motors
C307S018000
Reexamination Certificate
active
11057158
ABSTRACT:
A method and a system of supplying electric power from shore to a ship with generators60, 61, the ship being berthed in port include: a first step of synchronizing the electric power11from shore with electric power from the generators60, 61, a second step of carrying out temporary parallel operation of the electric power11from shore and the electric power from the generators60, 61after the synchronization, and a third step of shutting off the electric power from the generators60, 61to supply the electric power11from shore to the ship after the temporary parallel operation. According to the method and system, electric power supply interruption can be prevented when a shore power source is changed over to an onboard power source, and vice versa. Also, onboard control devices can be smoothly operated even on the way of changing over the power sources.
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Office Action dated Aug. 29, 2006 issued in corresponding Japanese Patent Application No.: 2004-045126.
Japan Radio & Electric Mfg. Co., Ltd.
Waks Joseph
Westerman, Hattori, Daniels & Adrian , LLP.
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