Abstract
This article presents a modular low current ripple electrolysis power supply topology based on multiphase high-frequency inverter and its control method. The topology of the electrolysis power supply consists of ac–dc converter and dc–dc converter. Among them, the dc–dc converter is composed of a plurality of modular small-capacity dc–dc conversion modules connected in parallel. Each dc–dc conversion module is composed of a half-bridge high-frequency inverter and a full-wave rectifier. By controlling the output voltage of the high-frequency inverter in each dc–dc conversion module and staggering the equal phase angle in sequence, the low-frequency harmonic components in the dc voltage at the output terminals of multiple dc–dc conversion modules are eliminated. Finally, simulation and experimental results show that the proposed electrolysis power supply can provide low ripple current for the load, which provides technical guarantee for the production of high-quality electrolytic copper foil.
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