Axial compressors control systems

Throttling of the suction of centrifugal and axial compressors wastes less power than throttling the discharge. Even less power is wasted by adjustment of built-in inlet guide vanes with a servomechanism which is a feedback control system in which the controlled variable is mechanical position. Speed control is a particularly effective control mode, applicable to large units that can utilize turbine or internal combustion drives control is by throttling of the supply of motive fluids, steam or fuel. 

The control of steam turbines will be discussed separately in Section 2.19. Therefore, here the focus will be on the optimization of gas turbine (GT) operation. The GT system consists of three main parts the air compressor (axial type), the burners, and the turbine itself. The mechanical power gener-... 

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