In this article, we present a new type of Z-source inverter (ZSI) that replaces two inductors in the original quasi-ZSI with two transformers. It can produce a very high output voltage with the high value of the modulation index. Moreover, it enables both to provide a better power quality of output and to reduce the switching loss. In particular, the proposed quasi-clamped ZSI with two transformers give a unique solution to obtain high gain by reducing the turns ratio, rather than increasing it. Also, the leakage inductance of the transformer might cause huge voltage spikes across the inverter bridge. To deal with this problem, an effective clamping technique is proposed. As a result, this increases the overall efficiency of the system by utilizing the low-power switching devices. The characteristics of the proposed quasi-clamped ZSI with two transformers are comprehensively discussed with the detailed theoretical analysis. Thereafter, its performances are evaluated by both simulation and experimental tests.
|Number of pages||12|
|Journal||IEEE Transactions on Industrial Electronics|
|Publication status||Published - 2021 Oct|
Bibliographical noteFunding Information:
Manuscript received June 3, 2020; revised August 7, 2020 and September 3, 2020; accepted September 16, 2020. Date of publication October 9, 2020; date of current version June 28, 2021. This work was supported by the National Research Foundation funded by the Ministry of Science and ICT, South Korea government, under Grant 2020R1A3B2079407. (Corresponding author: Jung-Wook Park.) Zeeshan Aleem, Hyoung-Kyu Yang, and Jung-Wook Park are with the Department of Electrical Engineering, Yonsei University, Seoul 03722, South Korea (e-mail: email@example.com; firstname.lastname@example.org; email@example.com).
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All Science Journal Classification (ASJC) codes
- Control and Systems Engineering
- Electrical and Electronic Engineering