TY - JOUR

T1 - Review of Flux Interaction of Differently Aligned Magnetic Fields in Inductors and Transformers

AU - Pfeiffer, Jonas

AU - Kuster, Pierre

AU - Schulz, Ilka E. M.

AU - Friebe, Jens

AU - Zacharias, Peter

N1 - Funding Information: This work was supported in part by the German Federal Ministry of Education and Research (BMBF) through the BMBF Project under Grant 16EMO0234, in part by the Ministry of Science and Culture of Lower Saxony, in part by the Volkswagen Foundation, and in part by the Gottfried Wilhelm Leibniz Universtität Hannover through the Open Access Publishing Fund.

PY - 2021/1/6

Y1 - 2021/1/6

N2 - Magnetic devices are used in the majority of power electronic applications, e.g. power electronic converters, mains filters or burst/surge protection. Typically, they are the bulkiest and most cost-intensive components. Flux interaction of differently aligned magnetic fields in inductors and transformers can be one opportunity for size and cost reduction. It enables controllable magnetic devices through an additional manipulated variable to improve application design. The presented article gives an overview about different methods of flux interaction of magnetic fields, their background, potentials and open research questions. The focus lies on electrically controlled magnetic devices, realized by auxiliary windings wound on or introduced into the magnetic core to control its saturation and the inductive behavior of the device by injecting a current. However, the given methods and explanations are transferable to magnetic devices influenced by permanent magnets. The background of the different flux interaction methods are explained theoretically and verified by simulations and several laboratory prototypes. The focus of the simulations and experimental investigations lies on magnetic devices for power electronic converters, whereby especially ferrite core materials were used.

AB - Magnetic devices are used in the majority of power electronic applications, e.g. power electronic converters, mains filters or burst/surge protection. Typically, they are the bulkiest and most cost-intensive components. Flux interaction of differently aligned magnetic fields in inductors and transformers can be one opportunity for size and cost reduction. It enables controllable magnetic devices through an additional manipulated variable to improve application design. The presented article gives an overview about different methods of flux interaction of magnetic fields, their background, potentials and open research questions. The focus lies on electrically controlled magnetic devices, realized by auxiliary windings wound on or introduced into the magnetic core to control its saturation and the inductive behavior of the device by injecting a current. However, the given methods and explanations are transferable to magnetic devices influenced by permanent magnets. The background of the different flux interaction methods are explained theoretically and verified by simulations and several laboratory prototypes. The focus of the simulations and experimental investigations lies on magnetic devices for power electronic converters, whereby especially ferrite core materials were used.

KW - Controllable magnetics

KW - flux interaction

KW - inductor

KW - magnetic fields

KW - transformer

UR - http://www.scopus.com/inward/record.url?scp=85098775068&partnerID=8YFLogxK

U2 - 10.1109/ACCESS.2020.3047156

DO - 10.1109/ACCESS.2020.3047156

M3 - Article

VL - 9

SP - 2357

EP - 2381

JO - IEEE ACCESS

JF - IEEE ACCESS

SN - 2169-3536

M1 - 9306771

ER -