Integrated magnetics for power density improvement of differential rectifiers and inverters

Abstract

In this paper, a type of low-frequency integrated AC inductor with zero inductance coupling is proposed for differential rectifiers/inverters. The objective is to increase the power density of these converters by replacing their two bulky low-frequency AC inductors with the proposed integrated AC inductor, which is much more compact. The principles of magnetic integration and the optimization procedures are explained in detail. Experimental results show that a core volume reduction of 20.4% is achievable using the proposed integrated magnetics.