4. Materials
4.1 Magnetic materials
The energy stored can be up to 20 times greater in a winding on a magnetic core than in a winding on a non-magnetic material. This energy depends on the induction B.
In fact, all materials subjected to an external magnetic field H can be characterized by the induction B and the field H prevailing at any point of these materials.
In the case of a non-magnetic material, the induction is little different from µ o H, where µ o is the vacuum permeability. It is of the order of 0.1 T (for a non-superconducting coil).
In the case of a magnetic material, induction is expressed by the relation :...
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Materials
Winding technologies
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Economic data
Indirectly open to international competition, the transformer and inductor industry is currently undergoing major changes. It must adapt to new market requirements: innovation, miniaturization, standardization and automation.
The number of manufacturers is declining rapidly: local subcontractors are disappearing, leaving the way open for structured, specialist manufacturers. The estimated breakdown...
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