A new technique for parallel connection of commutation cells: analysis, design and experimentation

A new technique useful for parallel connection of commutation cells is introduced in this paper. It consists of using small inductances in order to ensure dynamic and static share of the commutated current among the different switches. The operation principle, theoretical analysis and design procedure are presented. Experimental results, obtained from a 400 W buck prototype using two commutation cells, have been used to validate the theoretical analysis and demonstrate the effectiveness of the proposed technique. Several experiments have also been accomplished to clear up the advantages of this new technique in comparison to the conventional one