Vibration Suppression of Magnetic Levitation High-speed Flywheel Energy Storage Rotor System Based on rLADRC
Aiming at the problem of vibration suppression of high-speed flywheel energy storage rotor sys-tem supported by electromagnetic bearings,a reduced order linear active disturbance rejection control(rLADRC)method was proposed.Firstly,a four-degree-of-freedom radial second-order mathematical model of rigid flywheel rotor system was established,which considered gyroscopic effect and unbalanced force.Then,the intrinsic degree of freedom term in the mathematical model of each degree of freedom was treated as the internal disturbance,and the coupling and unbalance force terms introduced by other degrees of freedom terms were considered the external disturbances,a reduced order linear extended state observer(LESO)was designed to estimate the total disturbance in real time.Finally,the linear state error feedback(LSEF)control law was designed,and the total disturbance was compensated.Results show that the rLADRC can effectively decouples the radial four freedom degrees of the rotor.Compared with the tradi-tional decentralized proportional-integral-derivative(PID)control and LADRC,rLADRC has superior dy-namic performance and stronger disturbance suppression capabilities,witch can realize stable levitation and effective vibration suppression of the flywheel rotor system in the full speed range.
万方数据
维普
