Kazuhiro Umetani

TL;DR: A current balancing method is proposed that can improve the current sharing between the paralleled phases relying on a single balancing transformer, and its theory is based on Ampere’s law, by forcing the sum of the three resonant currents to zero.

TL;DR: Lagrangian dynamics is applied to theoretically prove that it is possible to replace the three-discrete transformers by a single integrated transformer, and reveals that in a symmetrical design, there is no interphase coupling, and as a result the magnetic components can be downsized owing to the ac flux cancellation.

TL;DR: The integrated magnetic component for interleaved converters has been developed in order to satisfy the demand for high power density of converters as discussed by the authors, and the characteristics of inductor ripple current and magnetic flux in the core for the integrated winding coupled inductor are analyzed and evaluated in this paper.

TL;DR: In this paper, a comprehensive magnetic analysis for the three-phase-integrated transformer is conducted, and the proposed integrated transformer has been proven effective, and it realized a uniform thermal distribution along the core compared to the threediscrete transformers.

TL;DR: In this paper, the equivalent circuit of the integrated winding coupled inductor was derived using the Lagrangian method to evaluate consistency with the magnetic circuit model and experimental behavior, and it was found to be functionally equivalent to the magnetic model and consistent with the experiment.