Modeling And Simulation Of Double Engines And Double Propellers Integrated Power Propulsion System Based On PSCAD

Electric propulsion system is different from the mechanical propulsion system whichusing the internal combustion engine drive the propeller directly, it is a kind of propulsionmode by electric power. The electric propulsion system become a current research focusbecause of simple control system, good flexibility, high efficiency, low pollution comparedwith traditional mechanical propulsion system, electric propulsion technology of our countryis in the initial stage while it has been widely applied in developed countries, therefore theelectric propulsion system modeling and analysis has a very important significance. This topicanalysis and modeling of the various modules of electric propulsion system using PSCADsimulation software, finally formed a complete system and implement the preliminarysimulation research.This topic divided the electric propulsion system into prime mover and speed regulationsystem, generator and excitation system, propulsion motor and frequency conversion controlsystem, propeller and the other parts by modular thinking, analysis mathematical model andoperation principle of the various parts in PSCAD environment. Establishing prime moverWoodward speed regulation system and analyzing generator excitation system with IEEE Std421.5-2005in PSCAD and constitute a generating unit model, verify the rationality of themodel by the test of addition, alleviate the load to generating unit model and observing theinstantaneous speed change rate, voltage regulation factor and stable time. Analysis theprinciple of vector control method and build a propulsion motor vector control system model,aiming at the shortcomings of the traditional controller proposes a new controller to replacethe traditional controller and analysis the working principle of the single neuron adaptive PIDcontroller which achieved in MATLAB, complete joint simulation with MATLAB by createinterface components, call MATLAB realized control function and observe the control effect.Detailed analysis of propeller mathematical model and complete the various modules ofpropeller with FORTRAN language in PSCAD, form complete propeller model according tothe relationship of the hull and propeller as the load of propulsion motor, analysis the validityof model by starting experiment. Form single engine and single propeller system and doubleengines and double propellers system by the establishment of each model, experiment thetypical condition of single engine and single propeller and analysis the influence of twomodels of operation. Set up six point of fault and establish the fault control model inFORTRAN language, experiment the typical fault of double engines and double propellers, simulating changing process of propulsion motor and analysis reconfigurable of the system.Analyzing the situation of parallel operation and comparing to separate operation. Finallyanalyzing the situation of a variety of load and simulating of loading and unloading process.Although each model of electric propulsion system has some simplified in the process ofmodeling for the convenience of modeling and analysis, the created system can simulate theoperating condition of actual system to some extent and has a certain application value, and itcould be used as the foundation of the follow-up work.