Laminated Iron Core and Rotating Electric Machine Using the Same
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United States of America
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Issued Date -
Feb 13, 2025
app pub date -
Nov 14, 2022
filing date -
Nov 14, 2022
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Abstract
Provided are a laminated iron core that can reduce excessive increase in an iron loss while exhibiting saturation magnetic flux density higher than that of an electromagnetic pure iron plate, and can be made at lower cost than permendur, and a rotating electric machine using the laminated iron core. A laminated iron core according to the present invention is a laminated iron core in which a plurality of types of soft magnetic iron plates are laminated. The plurality of types of the soft magnetic iron plates include a first soft magnetic iron plate and a second soft magnetic iron plate, the first soft magnetic iron plate and the second soft magnetic iron plate are alternately laminated, the first soft magnetic iron plate has higher nitrogen content and higher saturation magnetic flux density than the second soft magnetic iron plate, and the second soft magnetic iron plate has lower coercive force than the first soft magnetic iron plate.
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