Study Of The Digital Design Method To Ship Electric Propulsion System

It is superiority to ship electric propulsion, going with the development of electric electron and bigger power AC machine's transformation frequency timing recently. It is developing direction of ship drive equipment. On the contrary, the digital design technique of ship electric propulsion is vacant domestically. The in-depth study of ship electric propulsion's digital design technique breaks through external mutual technique blockage and promotes the speedy development study of our ship electric propulsion.The text is going on with the scientific research item, several works are accomplished during the course of research.Firstly, it is mathematics model, including resistance model and load model. Emphasely build up the model of six-phase synchronous motor with 30 degree reciprocally. It is high-level, nonlinear and strong coupling, thus it is simpler making use of vector transformation. It is more reasonable to analysis and study.Secondly, it is mathematics expression. One,making use of the RBF's excellence, design fixation screw propeller based on atlas design means. Two, it is multiformity of synchronous machine evaluation object to the question, bring forward betterment method of subjection function, build up blur judge means based on AHP,which is suitability to machine design method.Thirdly, program the digtal design of ship electric propulsion. It is simulation validate. It is emphase to solve major equipment matching, going with suitable transducer and voltage rank. One, it is peculiarity of six synchronous machine, bring forward vector control system based on the direction of air clearance magnetic field, make simulation researeh on the six-phase synchronous motor. Two, consider the function of screw propeller and ship, build up ship-propeller load model integratively, and do the simulation research on combined six-phase synchronous motor control system. Third, combine guant load model and six-phase synchronous motor vector control model, carry through simulation research on electric propulsion frequency conversion timing system.The simulation outcome indicates the design's screw propeller and machine selectness correctness.It is basement to extend the use of electric propulsion with digital design. The digital design method system can help us design screw propeller and machine selectness, shorten the design period,reduce the design cost and do the simulation research at the same time.