In order to address multiple IGBT in series voltage imbalance problem

which caused by device driver signal is inconsistent

and achieve application of series IGBT in high power and high voltage.Combining the advantage of series auxiliary circuit at IGBT power side and gate side

a balancing auxiliary circuit of IGBT series active voltage of approach based on enhanced Miller effect has been put forward

and the operation principle has been discussed.Then

IGBT series simulation circuits are established

both without and with the balancing auxiliary circuit are simulated.Simulation results show that during IGBT series operating

the balancing auxiliary circuit not only to be able to work well with suppression the imbalanced voltages caused by IGBT drive signal inconsistency

but also can effectively prevent the overvoltage

thus ensures the security of IGBT series operation.