摘要 |
An inverter comprises a first boost apparatus (112), a second boost apparatus (114), a first converting stage (102) coupled to the first boost apparatus (112), a second converting stage (104) coupled to the second boost apparatus (114), wherein the first converting stage (102) is configured such that a first three-level conductive path is formed when a voltage at a dc source is greater than an instantaneous value of a voltage at an output of the inverter and a first five-level conductive path is formed when the instantaneous value of the voltage at the output of inverter is greater than the voltage at the dc source. |