Research on control strategy of grid-connected inverter for compressed air energy storage system

For the purpose of enhance the steady-state accuracy and rapid reaction of the direct current unilateral bus bar voltage and actual export power of the compressed air energy storage expansion power generation structure, a modified linear active disturbance rejection control technique account of lumped disturbance observation error is created and used for voltage outer loop to take shape a closed loop construction that has never been created and used. Based on this the design theory of linear active disturbance rejection control means is illustrated. Meanwhile, the simulation model is constructed to testify it. The conventional linear active disturbance rejection control means as well as PI control means are respectively contrast with the means mentioned in this article. The simulation conclusion indicates a phenomenon which about modified linear active disturbance rejection control is better than mentioned above two conventional methods, which can make the actual export power of the grid side more quickly track the required power and remain stable, meanwhile, the stable performance of the direct current bus voltage is also improved.