Westerman, Hattori, Daniels & Adrian, LLP.
Method of supplying electric power from shore to ship and system thereof
A method and a system of supplying electric power from shore to a ship with generators 60, 61, the ship being berthed in port include: a first step of synchronizing the electric power 11 from shore with electric power from the generators 60, 61, a second step of carrying out temporary parallel operation of the electric power 11 from shore and the electric power from the generators 60, 61 after the synchronization, and a third step of shutting off the electric power from the generators 60, 61 to supply the electric power 11 from 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.
Japan Radio & Electric Mfg. Co., Ltd.
H B H H H B
H02J B63J H02J H02J H02J B63J
additional inventional inventional inventional inventional additional
Masumi
Fujita