To downsize a power conversion device for supplying power to an electric motor for propulsion in a vessel electric propulsion system.SOLUTION: A vessel propulsion system includes: a propulsion propeller; an electric motor for propulsion for driving the propulsion propeller; an inboard power source for supplying power to the electric motor for propulsion and an inboard load; and a power conversion device for converting power to a desired AC power when supplying the power to the electric motor for propulsion through an inboard bus line from the inboard power source and converting power to desired AC power when supplying the power generated by the electric motor for propulsion to the inboard load through the inboard bus line. The power conversion device includes: a power conversion unit connected between respective phases of an input side three phase AC and an output side three phase AC, and having nine pieces of arms composed of H bridge cells including a capacitor and a plurality of switching elements connected serially; and a control unit for controlling the power conversion unit so that power conversion is carried out in both directions between the input side three phase AC and the output side three phase AC.SELECTED DRAWING: Figure 9
【課題】舶用電気推進システムにおいて、推進用電動機へ電力を供給する電力変換装置の小型化を実現する。【解決手段】舶用推進システムが、推進プロペラと、推進プロペラを駆動する推進用電動機と、推進用電動機及び船内負荷へ電力を供給する船内電源と、船内電源から船内母線を介して推進用電動機へ電力を供給する際に所望の交流電力に変換し、推進用電動機で発電した電力を船内母線を介して船内負荷へ供給する際に所望の交流電力に変換する電力変換装置とを備える。電力変換装置が、入力側三相交流と出力側三相交流との各相間に接続され、キャパシタ及び複数のスイッチング素子を含むHブリッジセルが複数直列接続されてなる9本のアームを有する電力変換部と、入力側三相交流と出力側三相交流との間で双方向に電力変換を行うように電力変換部を制御する制御部とを有する。【選択図】図9
VESSEL PROPULSION SYSTEM
舶用推進システム
2019-05-16
Patent
Electronic Resource
Japanese
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
European Patent Office | 2023
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