Feedback control of thermoacoustic instabilities in sequential combustor with nanosecond repetitively pulsed discharges
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Date
2024-10
Publication Type
Conference Paper
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yes
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Abstract
Controlling thermoacoustic instabilities is a necessary task for the development and operation of gas turbines. With the increasing proportion of renewable energy sources, gas turbines must have flexibility in terms of both fuel and load. This implies that thermoacoustic instabilities must be controlled under different operating conditions. Active control strategies are indeed very suitable in this case, as they can adapt to the changes in operating conditions. Nanosecond repetitively pulsed discharges (NRPD) has shown to be promising active control actuators because they require no moving parts. In this study, the effectiveness of feedback and open-loop control law with NRPD actuation to suppress thermoacoustic instabilities in a lab-scale sequential combustor is evaluated. The effect of the controller parameters on the NO emissions of the combustor is also quantified. The results indicate that there is a trade-off between acoustic pulsation reduction and NO emission.
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published
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Book title
INTER-NOISE24
Volume
Pages / Article No.
9281 - 9288
Publisher
Institute of Noise Control Engineering
Event
53rd International Congress and Exposition on Noise Contrl Engineering (Inter-Noise 2024)
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Subject
Control; Thermoacoustic; Plasma; Combustion
Organisational unit
09471 - Noiray, Nicolas / Noiray, Nicolas