Circuit and method for reducing voltage spikes due to...

Details Circuit and method for reducing voltage spikes due to... Circuit and method for reducing voltage spikes due to...

2005-01-11

2008-05-13

Sterrett, Jeffrey (Department: 2838)

Electric power conversion systems

Current conversion

Having plural converters for single conversion

C363S056120, C363S127000

Reexamination Certificate

active

07372711

ABSTRACT:
For use in a power converter having parallel power trains, a circuit for, and method of, reducing voltage spikes due to magnetizing current imbalances in the power trains and a power converter incorporating the circuit or the method. In one embodiment, the circuit includes: (1) a conductive bypass path coupling nodes between transformer secondary windings and inductors in each of the power trains and configured to provide an alternative path to redirect magnetizing current imbalances from the inductors and (2) a capacitor located in the conductive bypass path.

REFERENCES:
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patent: 3745440 (1973-07-01), Lord
patent: 4322817 (1982-03-01), Kuster
patent: 4660136 (1987-04-01), Montorefano
patent: 6054674 (2000-04-01), Moriguchi et al.
patent: 6344628 (2002-02-01), Nowak et al.
patent: 6590788 (2003-07-01), Mercier
patent: 6784644 (2004-08-01), Xu et al.
patent: 6930457 (2005-08-01), Zack et al.
patent: 7046532 (2006-05-01), Matsuo et al.

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