Title :
Control of thermo-acoustic instabilities using pulse width modulation
Author :
McManus, K.R. ; Magill, John C.
Author_Institution :
Phys. Sci. Inc., Andover, MA, USA
Abstract :
An experimental study of a closed-loop control system to suppress thermo-acoustic combustion instabilities is described. The control mechanism relies on out-of-phase heat addition by means of an auxiliary fuel injector. Pulse width modulation is used to precisely control the amplitude and phase of the auxiliary fuel pulses. The controller was successfully implemented in a numerical simulation of a dynamic combustion instability and experimentally.
Keywords :
aerospace engines; closed loop systems; combustion; feedback; pulse width modulation; turbines; auxiliary fuel injector; auxiliary fuel pulses; closed-loop control system; dynamic combustion instability; out-of-phase heat addition; pulse width modulation; thermo-acoustic instabilities; Aerodynamics; Combustion; Control systems; Engines; Fires; Fuels; Pulse width modulation; Space vector pulse width modulation; Spraying; Turbines;
Conference_Titel :
Control Applications, 1997., Proceedings of the 1997 IEEE International Conference on
Conference_Location :
Hartford, CT, USA
Print_ISBN :
0-7803-3876-6
DOI :
10.1109/CCA.1997.627763
