To develop electrical steels suitable for the rapidly-progressing electrification of automobiles and establish the optimum use technologies, the properties of core materials in actual machines were investigated using methods including model motor measurement, local magnetic measurement in model motors, and model transformer measurement. Based on the knowledge obtained as a result of model motor measurements, 'JNE', featuring high flux density and low iron loss, and 'JNEH', with low high frequency iron loss, were developed as non-oriented electrical steels for automotive applications. 'JGE' was developed as a grain-oriented electrical steel suitable for segmented-type motor cores and features lower iron loss in directions off the rolling direction than conventional grain-oriented electrical steel. Products developed for high frequency reactor applications include 'JFE Super Core JNEX', which realizes low noise and low iron loss in the 400 Hz-10 kHz region by addition of 6.5% Si, and 'JFE Super Core JNHF', which reduces iron loss in the very high frequency region from 5 kHz to 100 kHz by a gradient distribution of Si in the sheet thickness direction. (Engl. translation from JFE GIHO, 2004, No.4, p.58-63, (jap.))
Electrical steels for advanced automobiles - Core materials for motors, generators, and high-frequency reactors
Elektrobleche für moderne Kraftfahrzeuge - Kernwerkstoffe für Motoren, Generatoren und Hochfrequenz-Reaktoren
JFE Technical Report ; 4 ; 67-73
2004
7 Seiten, 13 Bilder, 1 Tabelle, 13 Quellen
Article (Journal)
English
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