Performance Comparison Between SiC and Si Inverter Modules in an Electrical Variable Transmission Application

Abstract

This paper evaluates the performance of Silicon Carbide MOSFET and Silicon IGBT modules in a three-phase inverter for Electrical Variable Transmission systems. For this purpose, two practical inverter setups were developed and compared. An increase of several percentage points is visible over the entire operating range for the Silicon Carbide prototype. The total energy efficiency increased by 3.7% for the rotor and by 11.2% for the stator, for the same test conditions.