Construction,Simulation And Experimental Study Of Two-engine Parallel Propulsion System Test Platform

From the construction time sequence of military ships of countries,it can be seen that the combined gas turbine and gas turbine（COGAG）propulsion system has become an obvious development trend.Naval powers such as the United States,the United Kingdom,and Russia have begun research on the COGAG power plant system of marine in the 1960 s and have applied them to a series of military ships,and at the same time,the technology has been severely blocked.In China,there is still a large demand for research in the important area.According to the current status of domestic research on the COGAG power plant system,it was proposed to study the system characteristics under emergency conditions（fast merge or disengage）.The main research contents are as follows:（1）Based on the composition and configuration of the COGAG power plant used on actual ships and domestic power plant test platforms,the design of the twin-engine parallel propulsion system test platform was carried out,and four design schemes were comprehensively evaluated,and the final scheme was determined;according to the project research content and the expected functions of the test platform,the components of the test platform were selected and designed,which provides a method guidance for the actual construction of the test platform.（2）Based on the research of the control schemes and load distribution methods commonly used in the COGAG propulsion system,and combined with the operating characteristics of the permanent magnet synchronous motor and the propeller,the single-engine mode,the merge mode and disengage mode of the test platform were analyzed in principle,and the control method of the parallel controller was proposed,which provides a theoretical basis for establishing the control system of the twin-engine parallel system.（3）The modular modeling method was used,the key components of the test platform were thoroughly studied,including the permanent magnet synchronous motor,SSS clutch,power turbine rotor,parallel gear box and propeller,and their mathematical models were built;the simulation model of each component was built by using Matlab/Simulink simulation software,and the simulation model of the test platform of the twin-engine parallel propulsion system was built.（4）Based on the simulation model and test platform of the twin-engine parallel system,the dynamic characteristics of the parallel system under fast merge/disengage conditions were simulated and tested.The simulation and test results show that under rapid merge/disengage conditions,a certain impact load will be generated in the system,which provides a theoretical support for the further research of the COGAG power plant system in the future.