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Several impedance source converters are receiving more attention currently due to their bucking-boosting capability in a single conversion step, reduced system cost, size, footprint, and control system complexity compared to dual-stage structures. This paper introduces a comparative analysis of a recent Split Source Inverter (SSI) topology and one of its modified versions which is called Switched-inductor Split Source Inverter (SL-SSI). Obviously, the SSI structure advances many features compared to the conventional Z-Source (ZSI), and quasi-Z-Source Inverters (qZSI) such as minimized component voltage and current stress for single-stage voltage boosting properties. In addition, the mathematical modulation of the SSI and SL-SSI are analyzed for inverter power elements design and selection strategy, and control system simplification. The theoretical operation of the two topologies is investigated and analyzed considering the Sinusoidal Pulse-width Modulation (SPWM) strategy. The SSI and SL-SSI are designed for 10 kW system ratings and implemented using Opal RT OP5410.

A Comparison Analysis of a New Switched-inductor and Conventional Split Source Inverter Structures