Usually, rotational magnetization (RM) is associated with rotating machine cores. However,
in more restricted ways, it also arises in three-phase transformer cores. Modern designs of T …

The book presents practical aspects related to the measurement of rotational power loss in
soft magnetic materials. The book furthermore focuses on practical aspects of performing …

The performance of electromagnetic devices like motors and transformers is dictated by their
efficiency of magnetic energy conversion, and the adequate modeling of this efficiency is …

Vector quantities and tensorial properties rule the magnetization mechanisms in
ferromagnetic materials. Every ferromagnetic material is anisotropic to some degree in its …

Accurate measurements of magnetic losses in laminations are a prerequisite for their
theoretical assessment, as well as for satisfying calculations of energy dissipation in …

A system has been developed for measuring localized power loss of electrical steel
laminations based on the initial rate of rise of temperature method. Hardware and software …

Evaluations of local induction time patterns () in transformer cores show high relevance for
both losses and magnetostriction. This paper presents numerical calculations for a three …

We report a comparison of rotational energy loss measurements in the same non-oriented
Fe–Si laminations carried out by two laboratories Istituto Nazionale di Ricerca Metrologica …

Ferromagnetic materials exhibit nonlinear magnetic behavior, and many are anisotropic.
Their magnetic characterization requires a mapping—in excitation and measurement—of …

Four types of electrical steel are analyzed: nonoriented, conventional grain-oriented, double
grain-oriented, and high-permeability grain-oriented. The results of field-metric …