Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1997-09-23
1999-03-09
Sterrett, Jeffrey
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
363138, H02M 7521
Patent
active
058809490
ABSTRACT:
A power converter comprises two main switches connecting an output either to the positive rail or to the negative rail. Two freewheel diodes for maintaining the current in the load, two snubbers and an auxiliary circuit including an auxiliary inductor in series with two auxiliary switches connected between the output and a mid-point of a capacitive voltage divider supplying a median voltage. Any error of the median voltage relative to its nominal value is evaluated and the main switches are additionally commanded, depending on the direction of the error, for a time period dependent on the amplitude of the error, in order to cause an additional current in the auxiliary circuit to correct the error at least in part.
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Cazabat Stephane
Delay Christian
Elloumi Khaled
Melhem Wissam
Pouliquen Herve
Alcatel Alsthom Compagnie Generale d'Electricite
Sterrett Jeffrey
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