Method of controlling thermoacoustic vibrations in a combustion system, and combustion system
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United States of America Patent
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Oct 8, 2002
Grant Date -
N/A
app pub date -
May 5, 2000
filing date -
May 7, 1999
priority date (Note) -
Expired
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Abstract
In a method of suppressing or controlling thermoacoustic vibrations which develop in a combustion system having a burner working in a combustion chamber due to the formation of coherent or vortex structures and a periodic heat release associated therewith, in which method the vibrations are detected in a closed control loop and acoustic vibrations of a certain amplitude and phase are generated as a function of the detected vibrations and induced in the combustion system, improved suppression is achieved in that, within the control loop, the amplitude of the generated acoustic vibrations is selected to be proportional to the amplitude of the detected vibrations.
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