Method and device for producing an electric heating current,...

Details Method and device for producing an electric heating current,... Method and device for producing an electric heating current,...

2009-02-13

2010-10-05

Patel, Rajnikant B (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S058000, C219S672000

Reissue Patent

active

RE041796

ABSTRACT:
A heating current used to inductively heat a metallic or magnetic work-piece is generated by an inverter supplied by a supply voltage. The inverter includes four switching elements arranged in an H-bridge circuit having two parallel longitudinal branches and a transverse branch. The switches are controlled so the heating current flows through the transverse branch. The diagonally opposed switching elements are switched from a conductive to a non-conductive state in a temporally staggered manner.

REFERENCES:
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patent: 5644484 (1997-07-01), Elango
patent: 6028760 (2000-02-01), Ferreira
patent: 6031740 (2000-02-01), Budmiger
patent: 6362462 (2002-03-01), Merrell et al.
patent: 664660 (1988-03-01), None
patent: 19527827 (1997-01-01), None
patent: 1361780 (2003-11-01), None
International Search Report dated Apr. 5, 2005 (4 pages).

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