UNIT AC-AC CONVERTER AND AC-AC CONVERSION SYSTEM

摘要

PROBLEM TO BE SOLVED: To increase the number of the output voltage levels without increasing multiplex number of unit ac/ac converters in AC-AC conversion system not using a multiphase transformer.;SOLUTION: To AC input and output sides, 5-level conversion circuits A1, A2 are connected. Switch bodies connect between the positive electrodes of first capacitors C1, C3 in each 5-level conversion circuit A1, A2, between the negative electrodes of second capacitors C2, C4, and between the common connection point of the first and second capacitors C1, C2, and between the common connection point of the C3, C4, respectively.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2016,JPO&INPIT