Patent ID: 9660553
Date: 2017-05-23
CPC Classifications: H02M,Y02E

Claim:
1. A switching stage ( 210 , 220 , 230 , 240 , 300 , 410 , 420 , 430 , 510 , 600 , 700 ) for multilevel power converters, including both DC to AC converters and AC to DC converters, which can be applied in energy conversion systems, comprising: a DC bus of capacitors with a plurality of m, m>1, DC bus capacitors ( a positive DC voltage terminal ( and having the m DC bus capacitors ( the switching stage comprising: a positive output terminal of the switching stage ( a number p, p>=1, of linked cells, each cell comprising: m+1 input terminals and m+1 output terminals of the cell; at least one capacitor ( m+1 switches ( for i=1 to i=m+1, output terminal number i of the switching stage being connected to output terminal number i of each cell and number p DC voltage terminal number i of the switching stage being connected to input terminal number i of the cell number 1; and if p>1, for j=1 to j=p−1, cell number j is linked to adjacent cell number j+1 such that for i=1 to i=m+1, output terminal number i of the cell number j is connected to input terminal number i of adjacent cell number j+1.