Abstract
This paper proposes an isolated multi transformer cell inverter employing several transformer cells. Some of the cells contain two unidirectional switches that generate two voltage levels and only last cell has five switches that provide five voltage levels. The proposed inverter configuration reduces a number of switches compared with both traditional cascaded transformer multilevel inverter and other multi transformer inverters including six switches in last cell. Also, a prototype has been implemented using DSP-based processor provides a high number of output levels in symmetric and asymmetric states. The operation and performance of the suggested inverter has been proved by simulation result and experimental results.
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