| Abstract |
At present multilevel converters are technically interesting due to their high power handling capabilities, low output harmonics level and reduced requirements in blocking voltages in the switching devices ratings and lower commutation stresses and losses. The multilevel converter configurations now in use have as their main disadvantage their circuit complexity, requiring a great number of power devices and passive components in their implementation, and increasing control circuit complexity. System costs is rather high, and therefore the multilevel inverters are considered cost effective only in very high power applications. In this work a new seven level inverter having a reduced component count is presented, based upon the H bridge with auxiliary switch 5 level architecture. This new configuration may be of interest for applications working at lower and medium power levels. Also a new seven level inverter controller is introduced. The combination of the new power converter topology and the new controller circuit reduces both system cost and complexity |
