A method of design and optimization for sic-based grid-connected AC-DC converters

Abstract

This chapter presents a method of design and optimization dedicated for three-phase AC-DC converters. The main idea of presented work is to provide a tool which supports design process and helps to achieve desired properties: efficiency, volume, weight and system cost. The proposed design method is described in the chapter with special attention to calculations regarding power section of the converter. Newly introduced technology of SiC power devices is in scope of author’s analysis. Features of proposed method are illustrated by three SiC-based laboratory models rated at 10 an 20 kVA respectively. Each model is a result of the optimization process performed at different input requirements related to volume and efficiency. Finally, performance all models is verified during operation with 3 × 400 V AC grid.