Abstract
By analyzing the working characteristics of the battery discharge regulators on satellites and selecting the Weinberg converter as the topology of the main power stage, the basic principles of each operating mode of the Weinberg converter are given. The advantages of introducing the peak current control mode are analyzed theoretically. In order to analyze the stability of the battery discharge regulator, a small-signal model of the power stage and control stage based on the peak current mode under continuous inductor current conditions was established using the state space averaging method, and the loop gains of the current inner loop and the voltage outer loop were deduced, and gives compensator design method. Finally, a 600W battery discharge regulator was taken as an example to obtain the stability analysis results before and after system compensation. The correctness of the theoretical analysis was verified by the load mutation experiment. The control method of this paper can also be extended to the power system.
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