Abstract
An experimental study has been carried out on the active control of surge in a centrifugal compression system. With a computerized on-line control scheme, the surge phenomenon is suppressed and the stable operating range of the system is extended. In order to design the active control scheme and choose the desired parameters of the control system inputs, special emphases have been placed on the development of surge inception and the nonlinear interaction between the system and the actuator. By use of the method designed in the present work, the results of active control onsurge have been demonstrated for the different B parameters, different prescribed criteria and different control frequencies.
Highlights
Similar to the situation ofaeronautical propulsion, it is well known that the surge phenomenon may seriously hinder industrial fans from operating steadily and improving in behavior
For engineering applications, when a deep surge occurs in the system, the higher prescribed criteria results are not satisfying for implementing the active control plan
The dynamic behavior of surge in the actual centrifugal compression system is analyzed in detail
Summary
Similar to the situation ofaeronautical propulsion, it is well known that the surge phenomenon may seriously hinder industrial fans from operating steadily and improving in behavior. In order to ensure the safe operation of compression systems, for a long time industrial fans are kept away from operating under high loading. Since Epstein et al (1989) first put forward a preliminary active control plan to suppress instability in turbomachinery, it appears possible that active control can be used to maintain the operation of a compression system at high parameters without having to change the original set-up of the compression system. Huang (1989) obtained the results of active control of surge in the centrifugal compressor by adopting the principle of anti-sound in acoustics. At the same time, Gysling et al (1991) made use of the aeromechanical feedback principle of the special spring-mass-damper’s perturbation response to the compression systems, and Pinsley et al (1991) took advantage of the method of close-coupled throttle obtaining more satisfied control results.
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