A ship power system simulator is disclosed. The ship power system simulator comprises: a power conversion device to convert power between a land power system and a fuel cell system for a ship; and a control device to control the power conversion device to simulate a virtual ship power system in one among a normal state, a load changing state, and a generation stop state, and control the power conversion device according to a power change between the simulated virtual ship power system and the fuel cell system.;COPYRIGHT KIPO 2015
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