Simulation Analysis And Optimization Study For Discharge Circuit Of Satellite Power

Satellite system includes many small systems which have different functions,among them power system is one of the most important system,Only in ensuring the stable and reliable working of satellite power system, in order to ensure the successful completion of the specific work of satellite.The research object of this paper is battery discharge regulator of satellite power system,the goal is to find the efficient discharge of topology and by simulating to verification the discharge circuit topologyThis paper study a large number of domestic and foreign related reference foundation in search, and introduces the domestic and international satellites and satellite simulation research status and development trends.The introduction gives a general overview of the power system.This paper introduces the principle, classification, function of power control system and chooses reasonable power regulating mode and bus regulation mode. By analysising the basic discharge topology commonly used in domestic and international,the final choice of this paper is Weinberg Boost as the discharging topology of main object.Firstly this paper makes a detailed introduction of the principle to the Weinberg Boost discharge circuit and chooses a suitable working mode;then by comparing the advantages and disadvantages of different sampling circuit, choosing appropriate sampling circuit; finally carrying out a normal simulation analysis to each function module which have designed to verification module function. Through comparing several commonly used analysis software such as Saber, PSpice and Matlab finding advantages and disadvantages, according to the circuit requirements, select the Saber to carry out the research. On this basis, several function modules constitute a complete discharge system, focus on the use of normal simulation analysis and worst case analysis to verify the rationality of the topology design of discharge.According to the study of this paper can not only finding reasonable topology for spacecraft discharge circuit, but also be used as a study of spacecraft discharge circuit function working in harsh environment, help circuit designers to study and perfect design for the new products, the ultimate realization of satellite overall development optimization. There are great significance for aerospace industry.