Abstract
In magnetic circuits of electric machines, as well as in nodes of three-phase transformer cores, rotational magnetization occurs. Calculations of iron losses in this kind of magnetization are based upon the knowledge of rotational field distribution in particular elements of the considered magnetic circuit. The rotational field inside the iron core was calculated by means of reluctance network method1. Calculations were carried out for a ring sample magnetic circuit and for a three-phase induction motor magnetic circuit. In this paper an idea of calculations and results of examinations of basic losses in a ring sample laminated core have been presented.
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