| Abstract |
This study concerns a 60-kW multiphase interleaved boost converter with coupled inductors. Thisconverter is designed for an EV powertrain application where downsizing is strongly required. For thepurpose of performing size optimization process, estimation models for self and mutual inductancesare presented. In addition, total losses (copper and core losses) on the coupled inductors are estimatedin order to minimize them and then increase the converter efficiency. The copper loss is estimated viathe AC resistance model. However, concerning the core loss, a comparative study between the wellknownSteinmetz approach, the Improved Generalized Steinmetz Equation and the losses obtainedusing 3D transient Finite Element calculations is conducted to find the most suitable for theoptimization process. These models are developed to avoid the use of co-simulations inside theoptimization loop. |
