Patent ID: 11936310
Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. The control method of the three-phase AC system according to claim 7, wherein the step 4 comprises:
performing the coordinate transformation of multiple coordinate systems on the error signal to obtain the error signal in each of the coordinate systems;
performing closed-loop control on the error signal in each of the coordinate systems to obtain electric potential instructions corresponding to the multiple coordinate systems;
performing the coordinate transformation on the electric potential instructions to obtain multiple harmonic electric potentials in a two-phase stationary coordinate system; and
adding up the multiple harmonic electric potentials in the two-phase stationary coordinate system and then performing a two-phase stationary/three-phase stationary coordinate transformation to obtain the harmonic compensation electric potential.