Mode Transition For A Diesel-electric Hybrid Propulsion System Of An Inland Public Service Vessel

In recent years,the linkage of economic development in various regions of our country continues to improve,inland water transportation capacity is increasing steadily,the number of yachts?official ships and so on are also increasing,with the total amount of inland vessels increase,water pollution,air pollution and other pollution problems it brings is more and more serious;in addition,inland ship power system use the traditional high speed diesel engine as the power source,this kind of equipment has low efficiency in the low load condition,which will aggravate the problem of pollution,and is not suitable for inland ship multi condition and high emission requirements.The power system structure need to be optimized and energy management strategy?control mode need to be analyzed.In order to provide dynamic redundancy,improve the ship fuel efficiency,and reduce the emission of pollutants,the hybrid ship is slowly becoming a preferred mode of propulsion,especially suitable for inland ships,which has multi working operation and strict emission requirements.This thesis introduces the basic framework of diesel electric hybrid power system and basic work mode,analyzes the energy management strategy for hybrid ship,proposes the research core of diesel electric hybrid ship is the transformation of different energy sources and fusion,in this thesis an inland public service vessel is studied as a carrier of mode switching,and the model reference control is proposed.The simulation results show that compared with the traditional way,MRC can avoid dynamic interruption and shafting impact,and significantly reduce the slippery grinding work.Results show that propeller load torque disturbance has impacts on the dynamic response of the transmission agent;the diesel engine output torque disturbance has impacts on the dynamic response of the input and output shaft,but has almost no effect on the output shaft.