High Current Multi-Stage Gate Drive Unit to Control the Maximum dv/dt

This paper addresses the fast voltage changes in a hard-switching IGBT based two-level voltage-source inverter. It is well known that fast-switching devices generate high dv/dt values at the inverter output. This paper presents a solution to control the voltage slopes of IGBTs in a flexible manner. The proposed method utilizes a multi-stage architecture to control both the dynamic and static behavior of the IGBT. The control stage of the proposed method is simulated and verified in a test chamber. The measurement results underline the capability to control effectively the di/dt and dv/dt for IGBTs.