Apparatus for Delay Angle Compensation of Flying Start Function

摘要

The present invention is for flying start of a high voltage inverter, by making the three-phase voltage of the inverter output terminal into dq axis voltages (Vd, Vq) to generate a phase angle (θ), and calculating a compensation phase angle according to a preset delay time. . And the compensation phase angle is summed with the phase angle (θ) to generate an initial angle for flying start. When the input power of the high voltage inverter returns to a normal state after an instantaneous fault occurs, the error between the phase angle of the command voltage of the inverter and the phase angle of the actual output voltage can be reduced, so that the high voltage motor can be operated more stably.