Protective circuit for a converter
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United States of America Patent
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Jan 19, 2010
Grant Date -
Nov 29, 2007
app pub date -
May 15, 2007
filing date -
May 23, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a protective circuit for a converter having a plurality of phases, for each phase current of the phases, a signal proportional to the respective phase current is applied to a transformer circuit that, below and in the area of a limiting frequency, functions as a low-pass filter with the limiting frequency, and above the limiting frequency, functions as a divider. The outputs of the transformer circuit are applied to a maximum generator for forming the absolute value maximum. This maximum is fed to a comparator in which the maximum is compared to a reference value.
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