Vibration Suppression Control of Megawatt Permanent Magnet Synchronous Wind Generator Rotor with Demagnetization Based on Time-Delay Sampling Control
The electromagnetic actuator for rotor vibration control of MW PMSWG is designed,and the time delay sampling control scheme of demagnetization rotor vi-bration is proposed.Firstly,the electromagnetic actuator is designed according to the shaft structure of the permanent magnet synchronous wind turbine,and the elec-tromagnetic force model of the electromagnetic actuator is built.Based on the rotor dynamics model,considering the time delay caused by the actual sensor sampling sig-nal transmission and controller calculation,using Lyapunov stability theory and LMI processing method,the conditions for periodic sampling and vibration suppression control of demagnetized rotor of MW PMSWG are established.Finally,the effec-tiveness of the control algorithm is proven by the parameter simulation of the MW PMSWG.