Aiming at the problem of many magnetic components in the quadratic converter

which causes the overall low power density and high loss of the converter

a novel magnetic integration decoupling method was proposed and a new integrated magnetic part was designed. Firstly

the circuit and magnetic circuit characteristics of the magnetic components

magnetic column flux distribution and decoupling conditions were analyzed by establishing an equivalent magnetic circuit model and using the magnetic permeability-capacitance analogous modeling method; secondly

model analysis was performed on the quadratic converter with the new integrated magnetic component

and the results show that the new integrated magnetic component does not affect the voltage gain and current ripple of the converter itself; the magnetic component was analyzed using finite element simulation software

and the simulation shows that the magnetic flux distribution of the magnetic core of the new integrated magnetic component is uniform

and the core utilization is high; finally

through the construction of the experimental prototype

the volume and mass of the new integrated magnetic component are reduced by 51.7% and 55.6%

respectively

compared with the independent magnetic component

which enhances the power density of the converter

reduces loss of the magnetic component

and improves efficiency of the converter

proving correctness and feasibility of the proposed magnetic integration method.