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
【課題】専用の高調波抑制フィルタを設置しなくても電力変換装置から陸上電力系統へ流出する高調波を抑制することを可能にする。【解決手段】陸電供給システムは、主機2によって駆動される軸発電機1と、主機2と軸発電機1との間に設けられた第1クラッチ23と、軸発電機1と接続し、その出力電力を定周波数定電圧の電力に変換し、船内母線8へ電力供給する電力変換装置9と、船内母線8へ電力供給する船内発電機18と、軸発電機1と電力変換装置9との接続部を陸上電力系統4に接続する遮断器5とを有し、陸上電力系統4から電力を受給する場合に、第1クラッチ23により主機2と軸発電機1との直結を解除し、電力変換装置9を可変周波数可変電圧制御して船内発電機18の電力で軸発電機1を起動し、軸発電機1を遮断器5を介して陸上電力系統4に同期投入した後に、電力変換装置9を定周波数定電圧制御して船内母線8へ陸上電力系統4の電力を供給する。【選択図】図1
SHORESIDE ELECTRIC POWER SUPPLY SYSTEM OF SHIP
船舶の陸電供給システム
2016-07-21
Patent
Elektronische Ressource
Japanisch
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