Anti-surge ADRC of Supercritical CO2 Compressor based on Genetic Algorithm
During the operation of supercritical CO2 compressor,the working state of adjustable guide vane changed frequently with the compressor speed and other state variables,which will cause the com-pressor to surge,and in serious cases the compressor equipment will be damaged.To solve this problem,this paper adopted an anti-surge auto disturbance rejection control(ADRC)method based on genetic al-gorithm.This method set up an anti-surge valve at the outlet of the compressor to control surge,and used a genetic algorithm to tune the auto-disturbance rejection controller,so that the opening of the anti-surge valve changed accordingly with changes in state variables such as speed.The opening of the anti-surge valve changed the outlet pressure,allowing the compressor to operate at the equilibrium point.The simu-lation results show that the auto disturbance rejection controller optimized by genetic algorithm has better anti surge control effect,with a shortened adjustment time of 20％to 33％and a reduced overshoot of 30％to 45％,making the control process smoother and able to stabilize the speed while suppressing dis-turbances.
supercritical CO2 compressorsurgegenetic algorithmauto disturbance rejection control(ADRC)
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