Performance Evaluation of the Single-Phase Split-Source Inverter Using an Alternative DC-AC Configuration

Abstract-In the first place, investigates and evaluates the performance of a single-phase split-source inverter (SSI), where an alternative unidirectional dc-ac configuration is used. Such configuration is utilized in order to use two common-cathode diodes in a single-device instead of using two separate diodes, resulting in minimum parasitic inductance in the commutation paths. In addition, the analysis and modulation of the single-phase SSI using this alternative configuration is discussed, and the analysis of the low frequency component in the dc side is introduced. Moreover, the features behind employing the triangular, the trailing-edge sawtooth, and the leading-edge sawtooth carriers with the single-phase SSI are discussed, and the differences among these carriers are highlighted.The introduced analysis is enhanced with simulation results using MATLAB/PLECS models, where a 1-kVA single-phase SSI is designed and simulated. Finally, the designed 1-kVA single-phase SSI is implemented experimentally and tested at different operating points, i.e. at different voltage gains, and a maximum efficiency of 95. 5% has been obtained.