A Non-isolated Three-Port Converter Interfacing Composite Bus in Power Conditioning Unit for Deep Space Detector

In combination with the background of diverse load types and variable operation modes of deep space detector, this project took the power supply architecture of this kind of satellite as the research object. It was suggested to adopt composite power bus to eradicate the influence of strong disturbance load on steady one under single bus architecture, and reduce the problems of low self-management ability under double bus architecture. Based on the novel platform, the deviation process of high-performance three-port converter between solar panels and each bus, according to the direction of the power flow and modulation mechanism was studied to realize efficient power conversion. To verify the theoretical analysis, a prototype in simulation was conducted and its waveforms are investigated completely.