Journal article

A Class of Single-Phase Z-Source AC-AC Converters with Magnetic Coupling and Safe-Commutation Strategy

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Publication Details

Author list: Aleem Z, Yang H, Ahmed F, Winberg S, Park J

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Publication year: 2020

Journal: IEEE Transactions on Industrial Electronics

Start page: 1

End page: 11

Total number of pages: 11

ISSN: 0278-0046


This paper proposes a family of single- phase transformer based Z-source AC-AC converters (ZSACs). The proposed converters inherit all the benefits associated with the classical single-phase ZSAC, which are providing the buck-boost operation, maintaining or reversing the phase angle, and improving reliability. The proposed converters also have the improved input profile, continuous input current, and shared ground between input and output. Moreover, they use the turns ratio of transformers to produce the required voltage gain, which can be tuned by either increasing or decreasing the turns ratio of transformer depending on the configuration of Z-source structure. A safe-commutation strategy is also presented to achieve the soft commutation, which eliminates the voltage and current spikes without any additional snubber circuits. The features of proposed converters are comprehensively discussed with the detailed theoretical analysis. Thereafter, its performances are evaluated by both simulation and experimental tests.


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Last updated on 2021-05-02 at 17:33