Asymmetrical transformer‐based embedded Z‐source inverters

Z‐source inverters are inverters with buck–boost capability that traditional inverters cannot match. Despite this ability, present Z‐source topologies are burdened by some limitations such as chopping input current, high‐voltage stress and poor spectral performance at high gain. To improve their performances, a number of asymmetrical transformer‐based embedded Z‐source inverters are proposed. Through theoretical derivation and experiments, the proposed inverters have been shown to draw a smooth input current and produce a high gain by varying the transformer turns ratio n. The range of variation for n depends on the inverter topology chosen, which in turn depends on the application under consideration.