Compensator Design for Power Loss Reduction on IGBT Switching

This paper is about IGBT switching in terms of reducing losses due to switching behavior. The losses from switching IGBT are the overshoot and transient of the Ic current and Vce voltage, this can have a big impact if applied to the Voltage Source Inverter (VSI) in the Electric Vehicle Motor Controller. There needs to be a gate driver controller that allows controlling IGBT switching transients. Lead compensator is an alternative for handling IGBT gate switching because in principle, this type of compensator is to improve system response. This compensator can be applied to a closed loop system by utilizing the feedback from the voltage at the IGBT collector and emitter to control the input voltage at the IGBT Gate. This concept makes it possible to control the slope of current or voltage transients. In this paper, the controller design is carried out on an IGBT with Simulink simulation and limited to the transient of Vce when turn off switches the system, so the specifications are smaller, from voltage, current and frequency. Based on the simulation results, it is found that the lead compensator can speed up the system response, so that transient switching from 2.05s to 0.18s. thus the efficiency of switching losses can be increased by reducing losses from 0.104J to 0.033J