Abstract
The structure of magnetic materials is an essential parameter for specifying magnetic characterization of the transformer core. This paper presents enhancing magnetic characterization of transformer cores by using new nanotechnology techniques. The effective magnetic parameters of new magnetic nanocomposites materials for the transformer cores (single-phase and three-phase) have been predicted based on recent theoretical approaches. The new design, the effects of variant types and concentrations of magnetic multi-nanoparticles on magnetization loss of transformers cores were studied with respect to traditional transformer cores. Optimal types and concentrations of nanoparticles were defined for controlling of reluctance and magnetization loss of transformer cores using multi-nanoparticles technique. A comparative study depicted the industrial features for using multi-nanoparticles against separate nanoparticles in transformers cores.
Highlights
Magnetic composites challenge materials like soft magnetic ferrites and electrical steels in applications with alternating magnetic fields
The trend in nanotechnology science leads to the development of electric and magnetic materials that will enhance their potential applications in future energy storage/transmission devices
Enhancement of effective relative permeability can be achieved by arranging positions of nanoparticles inside the base matrix in case of multi-nanoparticles technique; like that, Ferrite (μ1) and NiZn-Ferrite (μ2) are recorded as the best inclusions and arrangements for enhancing the effective relative permeability of Fe-Si Steel multinanocomposites
Summary
Magnetic composites challenge materials like soft magnetic ferrites and electrical steels in applications with alternating magnetic fields. Importance of improving electrical core performance is very active for enhancing power transformer behaviour. Power transformers are designed to operate mostly within the linear part of the core’s magnetization curve. A reasonable amount of linearity is retained to stay below flux density values that would incur excessive losses. It is facing more challenges of saturation. One of the most important magnetic properties of electrical steels, the nonlinear AC magnetization curve (B-H curve), is a key for the design of power transformers and motors with reduced size and improved performance. The trend in nanotechnology science leads to the development of electric and magnetic materials that will enhance their potential applications in future energy storage/transmission devices. Nanotechnology techniques have relationships with the interfacial behaviour between the nanopartic 2018 ADVANCES IN ELECTRICAL AND ELECTRONIC ENGINEERING cles and the polymer matrix in such nanocomposites [19], [20], [21] and [22]
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