COMPENSATOR DESIGN FOR POWER LOSS REDUCTION ON IGBT SWITCHING

• Main Author: Sunardi, Egi
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/71049
• Institution: Institut Teknologi Bandung

This study discusses the switching of the Insulated Gate Bipolar Transistor (IGBT) in terms of reducing losses due to switching behavior. the losses arising from switching IGBT are the overshoot and transient of the current Ic and voltage Vce, this can be 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 the IGBT transient switching. Lead Compensator is an alternative for controlling 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 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 research, the controller design concept is carried out on an IGBT with simulink simulation and limited to the transient Vce when Turn OFF scales the system so that the specifications are smaller, both from low voltage, current, and frequency. Based on the simulation results, it was found that the lead compensator in simulation can reduce losses from 0.104J to 0.033J because there is a reduction in settling time from 2.05s to 0.18s. while implementation can reduce losses from 0.119J to 0.666J because there is a reduction in settling time from 1.29s to 0.87s.