SHORESIDE ELECTRIC POWER SUPPLY SYSTEM OF SHIP

摘要

PROBLEM TO BE SOLVED: To enable suppression of a harmonic wave flowing from an electric power conversion device to a shoreside electric power system without installing a filter dedicated to harmonic wave suppression.SOLUTION: A shoreside electric power supply system has: a shaft generator 1 driven by a main engine 2; a first clutch 23 provided between the main engine 2 and the shaft generator 1; an electric power conversion device 9 connected to the shaft generator 1, converting output electric power of the same to electric power of a constant frequency and a constant voltage, and supplying the electric power to an inboard bus bar 8; an inboard generator 18 supplying electric power to the inboard bus bar 8; and a circuit breaker 5 connecting a connection part of the shaft generator 1 and the electric power conversion device 9 to a shoreside electric power system 4. When receiving electric power from the shoreside electric power system 4, direct connection of the main engine 2 and the shaft generator 1 is released by the first clutch 23, and while controlling the electric power conversion device 9 for a variable frequency and a variable voltage, the shaft generator 1 is activated by electric power of the inboard generator 18. The shaft generator 1 is synchronously input to the shoreside electric power system 4 via the circuit breaker 5, and then while controlling the electric power conversion device 9 for a constant frequency and a constant voltage, electric power of the shoreside electric power system 4 is supplied to the inboard bus bar 8.SELECTED DRAWING: Figure 1