Modeling and Modulation of NNPC Four-Level Inverter for Solar Photovoltaic Power Plant

Table 3

Relationship between three-level inverter voltage vector and four-level inverter voltage vector.

Three-level vector	Four-level vector
211, 100	211
200	311
210	Virtual vector
221, 110	221
220	220
120	Virtual vector
121, 010	121
020	131
021	Virtual vector
122, 011	122
022	022
012	Virtual vector
112, 001	112
002	113
102	Virtual vector
212, 101	212
201	Virtual vector
202	202
000, 111, 222	Virtual vector