Dead time compensation device of high power transistor (IGBT) to prevent current ripple

摘要

The disclosed design relates to a dead time compensation device of a large power transistor (IGBT) for preventing current ripple, in particular by a mismatch of switching signals applied to the large power transistor (IGBT) that determines the rotation speed and direction of the induction motor. This is to prevent current ripple from occurring. The present invention outputs a predetermined control signal that determines the switching time and phase by the control unit that controls the rotational speed and direction of the induction motor as a whole, and generates a switching signal for driving a pair of large power transistors based on the control signal. By applying it, it is possible to fundamentally prevent the occurrence of current ripple due to the inconsistency of the switching signals.