Research And Implementation On The Control Strategy Of Space Power System Based On S4R

As the core of the Space power system, based on regulate thelithium-ion battery discharge/charge and shunt regulate the solar batteryoutput power, the power control system should complete the control inpower system, adjust and control the power system output stabilization andsatisfy the changes of satellite’s load power demands.This thesis mainly study on the power control system of S4R(The SequentialSwitching Shunt Series Regulator). The main works of this research are asfollows:(1) Introduce the space power system which make up of the solarbattery and lithium-ion battery, include the solar battery, lithium-ion batteryand power control equipment. Study the base theory, equivalent circuitmodel and correlative characteristic of the solar battery and lithium-ionbattery.(2) Mainly study on regulating generatrix voltage strategy, powercontrol strategy and lithium-ion battery equipoise strategy in the powersystem control strategy. By comparing the of sequential switching shunt regulator (S3R), deeply analyze the power control technology of sequentialswitching shunt series regulator (S4R) in the power control strategy. Inlithium-ion battery equipoise strategy, we contrast the on/off resistancebattery equipoise, the average voltage on/off resistance battery equipoise,the inductance battery equipoise, the on/off capacitor battery equipoise andcontrary shunt voltage battery equipoise.(3) Design the hardware of the power control system based onsequential switching shunt series regulator (S4R), and design trial tovalidate the hardware.