The invention relates to a high-
voltage pulse energy storage power supply circuit for space electric propulsion. Aiming at the limitation of a
satellite on the weight and volume requirements of a
satellite-borne power supply, a composite topological structure of primary parallel connection and secondary series connection of two LCC resonant full-bridge
converters is adopted, so that the problems of a large primary
peak current, the easiness in heating of a switching tube, a high secondary
voltage and easiness in breakdown of a
rectifier diode are solved, and the reliability of the power supplyis improved; the two small transformers are adopted to replace a single large
transformer, so that the
miniaturization and compact design of the power supply is achieved. Two full-bridge
converters are driven by a single controller, and due to homology of driving signals and symmetrical
layout of circuits, automatic
current sharing can be achieved at the primary stage, and forced
voltage sharingcan be achieved by connecting the
secondary stage with a large-resistance voltage sharing
resistor in parallel at two ends of an
energy storage capacitor. By setting the
phase difference, a two-phasestaggered series-parallel LCC
resonance composite full-bridge topology is formed, input current ripples are reduced, an input side low-voltage
direct current peak value is reduced, and the LCC
resonance composite full-bridge topology is suitable for a
satellite platform with limited power supply output power.