Dead-time elimination method of nine-switch converter

This study presents a novel dead-time elimination method for operating nine-switch converter. The proposed method assumes the unique switching cells of nine-switch converter to operate under several subintervals divided during a fundamental period. Owing to the unidirectional conduction characteristics of switching cells, the nine-switch converter can operate without dead-time protection. Besides, for a special subinterval during which none of switching cells can be adopted, a novel switching signal transformation method is proposed to fully eliminate the dead-time protection during the operation of nine-switch converter. Matlab simulations and experimental results verify the effectiveness of proposed modulation scheme.