A novel pre-stabilizing circuit of EPC for space TWTA using quasi-resonant flyback converter

Hanglei Wu; Gang Wang; Linlin Cao; Shirui Miao

doi:10.1117/12.2661213

9 December 2022 A novel pre-stabilizing circuit of EPC for space TWTA using quasi-resonant flyback converter

Hanglei Wu, Gang Wang, Linlin Cao, Shirui Miao

Proceedings Volume 12492, International Workshop on Automation, Control, and Communication Engineering (IWACCE 2022); 124920J (2022) https://doi.org/10.1117/12.2661213
Event: International Workshop on Automation, Control, and Communication Engineering (IWACCE 2022), 2022, Wuhan, China

Abstract

The function of the pre-stabilization circuit in the traveling wave tube power supply is to convert the unstable bus voltage on the satellite into a stable DC output. The pre-stabilizing circuit of the traveling wave tube generally adopts the Buck structure. However, there is a suspension driving problem in the Buck circuit, which will make the driving circuit become complicated. At the same time, the efficiency of Buck is generally 90%, and Buck circuit can only be used to reduce voltage. In order to solve these problems and improve circuit efficiency, this paper proposes a new type of pre-stabilization circuit based on quasi-resonant flyback converter. The circuit can realize buck or boost, and the main switch tube has no floating drive problem. In the case of 28V input and 35V output, the efficiency reaches 91%. Therefore, the quasi-resonant flyback converter can replace the Buck for the pre-stabilization circuit.

Citation Download Citation

Hanglei Wu, Gang Wang, Linlin Cao, and Shirui Miao "A novel pre-stabilizing circuit of EPC for space TWTA using quasi-resonant flyback converter", Proc. SPIE 12492, International Workshop on Automation, Control, and Communication Engineering (IWACCE 2022), 124920J (9 December 2022); https://doi.org/10.1117/12.2661213

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