Current Status and Development Trends of Key Technologies for Marine Rim-Driven Thrusters
In the future,one of the strategic technologies in the field of high-end transportation power equipment is to adopt electrically direct-drive mode so as to achieve the conversion of electrical energy to mechanical energy without intermediate transmission.Rim-driven thrusters(RDT),as an electrically direct-drive propulsion device with highly integrated design,has been a hot research topic in recent years.Six key technologies of ship RDTs,including hydrodynamic design and optimization,motor design and control,water lubricated bearings design and performance enhancement,system integration and testing,propeller-hull coupling and collaborative control,reliability evaluation and intelligent maintenance,have been presented and summarized.The current status and future trends of various RDT technologies are elaborated,along with the application of RDT products to ships from a global perspective.It has been indicated that energy-saving,environmentally friendly,and flexible RDTs will be an important choice for green and intelligent ships.The specialized design,efficiency improvement,condition monitoring,and intelligent maintenance will be the most significant aspects for high-performance RDTs in the future.