High Power Laser and Particle Beams, Volume. 37, Issue 3, 035018(2025)

Optimal design of capacitor charging power supply algorithm with constant power input

Zeyu Chen, Qingxiang Liu, and Wei Li
Author Affiliations
  • School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China
  • show less

    During the charging period of capacitor charging power supply, the input power gradually increases with the increase of output voltage, which not only requires the power grid to provide a larger peak power, but also causes larger current harmonics. This paper proposes a new control algorithm based on a single-stage charging scheme with buffered energy storage capacitor that realizes the function of constant power input and constant current output only by using single-stage energy conversion. The algorithm not only achieves better constant power characteristics, but also lifts the restriction on the auxiliary energy storage capacitor. It can improve the equivalent excitation voltage by controlling the voltage of the energy storage capacitor. Matlab/Simulink was used to build a simulation model of capacitor charging with constant power input. The simulation results show that the constant power at the input end is realized during the 400-2 000 V stage of capacitor charging, the initial voltage of auxiliary capacitor is increased, and the voltage of load capacitor is increased at the same time. This shows that the algorithm can achieve better input constant power characteristics and circuit boost function.

    Keywords
    Tools

    Get Citation

    Copy Citation Text

    Zeyu Chen, Qingxiang Liu, Wei Li. Optimal design of capacitor charging power supply algorithm with constant power input[J]. High Power Laser and Particle Beams, 2025, 37(3): 035018

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category:

    Received: Jul. 17, 2024

    Accepted: Dec. 24, 2024

    Published Online: Apr. 29, 2025

    The Author Email:

    DOI:10.11884/HPLPB202537.240233

    Topics