Ship. Electric Propulsion System Integrated Modular Modeling And Analysis Of Typical Working Conditions

With the rapid development of shipbuilding industry, The size of the ship power system is expanding. The complexity is also getting higher and higher, The ship integrated electric propulsion system is gradually becoming the focus of the research in the world. Integrated electric propulsion ship power grid can be regarded as a small-scale,self-contained, compact,industrial-type power system, By generators, load, and serve for the load of power distribution equipment and cables. Generator sets are usually driven by diesel engine, gas turbine or steam turbine at least two main AC generators. The load includes a conventional auxiliary system,a main propulsion and auxiliary propulsion system. Since the ship propulsion load and other electrical equipment centralized power supply, This brings great challenges to the stability of the ship power system.Ship integrated electric propulsion system as a relatively new technology, there are technical risks, Using real physical object simulation and test cost is higher, Therefore, in the early stage of ship integrated electric propulsion system design, Through the computer simulation, the system analysis and the experimental evaluation are indispensable. Using system simulation approach, the simulation model is constructed on a computer, it can be repeated testing of the integrated electric propulsion system, Greatly reduce the experimental cost, Various countries compete to simulation research. Ship integrated electric propulsion system simulation are mostly land-based power system simulation software, At present, China has not specifically for a marine integrated electric propulsion system simulation software.The main work of this paper is based on the object oriented technology, Using VS2010 software to build a simulation platform for ship integrated electric propulsion system.Firstly, building a ship integrated electric propulsion system simulation platform of visual interface, According to the actual system components of the icon, To realize the drawing, operation and graphical construction of the components in the integrated electric propulsion system of ship,as a basis for the realization of the subsequent simulation functions.Secondly, using the idea of modular modeling, Modeling of ship integrated electric propulsion system simulation model, Comprising: generating modules, power distribution modules, propulsion module, power conversion devices and energy storage devices, For the differential equations in the simulation model using four order Runge Kutta method to solve.According to the typical working conditions of the ship, the typical working condition model of propeller is built, Provide support for subsequent system analysis.Finally, the ship integrated electric propulsion system typical fault conditions and normal working conditions simulation analysis, Verify the correctness of the mathematical model, At the same time, the reliability and practicability of the simulation platform are verified.