The Theoretical Research And Research On EMC For AC Power Propulsion System Of Warship

Power propulsion system of warship has been applicated for over 100 years,it has been developing with the technology. The technology of power propulsion system had become the main of propulsion mode in the modern warship,and adopted by many countries of the world. The evolvement process of power propulsion system is from DC ot AC,low power to high power,simpleness to complexity.Along with the widely application in the warship,a very important problem is brought up,That is EMC of the power system.In this paper, the evolvement process and the characteristic of power propulsion system are discussed firstly.The topic that EMC of power system is one of key technology of power propulsion system is presented.Secondly,the characteristic and the construction of power system is introduced. Power propulsion system is composed of many kinds of installations,including: power station,power distribution devices,electric devices,converters of ship,and so on. The characteristic is integration and modularization for electric devices and system.Some domestic and foreign examples are presented.In the third chapter,the paper involved mainly the research of the theory of Power propulsion system,The power of system is made up of a twelve-pulses synchronise motor.The mathematics models of main installations are set up,and in the base of the software Matlab,system simulation is carried out ,and the characteristic of EMC is involved .In the last,the experimentation research of EMC of power propulsion system is carried out in the base of the sample power propulsion system.The experimental results confirmed the theoretical analysis and the system simulation.Some concept of MV power distribution,EMI of devices,method of EMC was understood. The experimention is very useful for the research and construction of more high power propulsion system.