Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1982-05-19
1984-05-29
Shoop, William M.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 91, H02M 3335
Patent
active
044518765
ABSTRACT:
A switching regulator of the magnetic amplifier type comprises a saturable reactor whose core ismade by winding a sheet of an amorphous metallic magnetic material into a toroidal form. The sheet thickness of the amorphous material is preferably between 4 .mu.m and 60 .mu.m so that a coercive force has a small value enough to minimize an undesirable temperature rise. The amorphous material has a composition expressed by MaM'bXc, where M is Fe and/or Co, M' is a metallic element other than Fe and Co, M' is a nonmetallic element, a, b and c are in the conditions of a .gtoreq.50, b.ltoreq.30 and c.ltoreq.30 respectively, and a+b+c=100.
REFERENCES:
patent: 4217632 (1980-08-01), Bardos et al.
patent: 4262233 (1981-04-01), Becker et al.
patent: 4375077 (1983-02-01), Williams
Hilzinger, "Amorphe Magnetwerkstoffe", NTG-Fachberichte, Bd. 76, (1980), pp. 283-305.
Kunz et al., "Amorphous Alloys for Switched-Mode Power Supplies", Journal of Magnetism and Magnetic Materials, 19 (1980), pp. 183-184.
Hilzinger et al., "Amorphous Ferromagnetic Materials-Magnetic Fundamentals, Properties and Applications", Journal of Magnetism and Magnetic Materials, 9 (1978), pp. 191-199.
Bretthaver et al., Induktive Bauelemente der Leistungselektronik, Elektronik, (3/1981), pp. 43-50.
Hitachi Metals Ltd.
Shoop William M.
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