Modeling And Performance Analysis Of Power Thermal Management System Based On MATLAB Simulation Platform

With the expansion of fighter combat range and energy-intensive weapon equipment,the traditional second power systems have been unable to meet the demand,the second power system towards a highly integrated structure,highly integrated energy direction.And as the newest second power system,power and thermal management system compared with traditional second power system,has many different.The new type of second power system has carried on the detailed research.Through access to data,sorting out the working principle of the power and thermal management system,based on Matlab/Simulink platform for power and thermal management system and its main engine coupling system model is established.Using the established model,the working characteristics of power and thermal management system was analyzed,and in view of the power and thermal management system and the plane comprehensive matching problem and entropy production in the power and thermal management system problems were studied and optimized.First of all,based on the data,I sorting out the working principle of the power and thermal management system.Based on Matlab/Simulink platform,using the method of vessel for power and thermal management system as well as the main engine component level model is established,and then establish power and thermal management system and the main engine model of coupling system.Using the established model,the power and thermal management system of height and speed characteristics,overall performance was analyzed,the power and thermal management system of four work modes are compared,and the power and thermal management system for main engine thrust and specific fuel consumption,before turbine temperature are analyzed.And based on Matlab/Simulink platform of traditional second power system(APU)model is established,and then to power and thermal management system and the traditional second power system(APU)compares the overall performance.Secondly,in this paper,the power and thermal management system and the plane comprehensive matching problem is studied.For power and thermal management system from the position of the main engine bleed air and led from the main engine gas distribution in different flow was analyzed,using the method of multi-objective optimization of power and thermal management system and the plane comprehensive matching problem is optimized,and satisfactory optimization results were obtained.Finally,based on the entropy production of power and thermal management system in the view of energy analysis was studied,and the entropy production structure,power and thermal management system of entropy production as the change of flight state,entropy production as the change of flight state,parts are analyzed,l by penalty function method and simplex algorithm method,in view of the design point,based on the minimum entropy production parts for power and thermal management system from the parameters of operating parts are optimized.