Design Of12V/17000A Rare Earth Electrolysis Power

In recent years, with rare earth prices rising, the domestic relevant departments and therare earth industries are increasing emphasis on the mining and electrolysis of rare earths, soelectrolysis power of electrolyzing rare earth arouses people’s attention again. With thedevelopment of modern power electronic technology, new electromagnetic material、somecontrol methods and related technology also have been widely used applications, theelectrolysis power is gradually overcoming its weakness. at the same time, powersemiconductor devices、soft switching technology and the electromagnetic compatibility ofhigh frequency switch power also got rapid development.Lagging-leg for conventional phase-shift full bridge soft switch converter is difficult forachieving zero current switching, For this problem, A modified phase-shift full bridge softswitch converter topology. The principle and operation modes of the converter are analyzed.At the same time, the simulation and experiment confirm that the converter topology realizeslagging-leg zero current switching well.Starting with magnetic components, design and optimize high-frequency transformerand saturated inductor, so the interference of magnetic components for power is reduced,secondly design the capacitive component, at the same time mode determine the power swithtube and output of rectifier diode.The power mainly adopts the peak-current control mode, however, the power will appearunstable phenomenon when duty ratio is higher than one half. So the paper uses the modifiedslope compensation circuit and eliminates unstable phenomenon of the power well. Theoperation of the power is stable and reliable. At the same time, the paper also designshardware circuits and analyzes circuit diagrams and work process.A12V/17000A rare earth electrolysis power model machine is developed andexperiment proves that lagging-leg of the converter achieves zero current switching in a wideload range. Computing and experiments verify that the electrolysis power efficiency is largerthan83%and reach the expected effect.