Study Of Simulating Apparatus Of Load In Marine Electric Propulsion System

As the prospect of the electrical propelling and the great progress of the relevant technologies, we need build a laboratory about marine electric propulsion to grow with each passing hour. This paper develops a kind of simulating apparatus of propeller load on the basis of DC double closed loops speed-adjusting system and active-inverter. The apparatus is the key part of the simulation system of the Marine electric propulsion Lab, which is a subproject of the university's "211 Projects". It can provide verisimilar shift load for propulsive motor, and simulate the stable and dynamic property of the marine propeller that works under different conditions well and truly.Firstly this paper introduces the character of propeller and the effect between propeller and ship. Secondly provides a design of this simulating apparatus and selects some important parts according to the request of lab. Thirdly develops the simulating system's mathematical model to make engineering design and analysis. Finally this paper discusses the apparatus' control system and main circuit system and provides relevant means to fulfill the request of the different systems.According to study this simulating apparatus of propeller load based on DSP, this paper links the DSP technology with DC speed-adjusting system and active-inverter, and adopts phase controlled power converter instead of modulated power converter. So it is a helpful attempt in power drive's digital control.