SVPWM based Bidirectional T-Type Multilevel Inverter for Electric Vehicle Applications

Abstract

The main aspect of this paper is SVPWM based bi-directional T-type multilevel inverter for electric vehicle applications. A multilevel dc–dc converter operates in both directions, which is required in electric vehicles. It provides additional two switches and capacitor to manage the voltage of the T-type multilevel inverter capacitor during all or at fault conditions. This arrangement of this MLI converter due to the high-cycle-by-cycle voltage balance between capacitors (CN and CP), the bulky electrolytic capacitors used in T-type MLI, are replaced with longer life film capacitors resulting in a size and weight reduction of the converter by 20 percent. This allows increased space to increase the battery capacity. In this present system, THD and line voltages have more signals. LUCC will be minimized due to the utilization of SVPWM concept.