Low Current Ripple Electrolytic Power Supply and Its Control Method

doi:10.16628/j.cnki.2095-8188.2022.07.009

Abstract

Abstract:

Aiming at the demand of low current ripple electrolytic power supply in electrolytic copper foil industry,a topology and control method of low current ripple electrolytic power supply are proposed.The electrolytic power supply is composed of a PWM rectifier and a DC/DC converter in cascade,where the DC/DC converter is composed of a plurality of DC/DC conversion modules in parallel,and each DC/DC conversion module is composed of a half bridge high-frequency inverter and a full wave uncontrollable rectifier circuit.By controlling the output voltage of the high-frequency inverter in each DC/DC conversion module to stagger the equal phase angle,the low-frequency harmonic components of the output voltage of multiple DC/DC conversion modules are mutually offset,so as to reduce the output current ripple of the electrolytic power supply.Finally,the effectiveness of the proposed topology and its control method is verified by the experimental results.

Key words: electrolytic power supply, inverter, low current ripple, DC/DC converter

CLC Number:

TM46

WANG Tong, ZHOU Jie, XIAO Huagen, SU Minchao, WU Yihu. Low Current Ripple Electrolytic Power Supply and Its Control Method[J]. LOW VOLTAGE APPARATUS, 2022, 0(7): 56-61.

Figures/Tables 10

References 18

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