Coupled Inductor Assisted High Voltage Gain Half-Bridge Z-source Inverter

A half-bridge-based impedance-source inverter with two T-shaped coupled inductors is proposed in this paper. Unlike the conventional half-bridge structure, the proposed topology can generate a zero-voltage level at its output stage. First, the proposed configuration and its modulation method are des...

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Bibliographic Details
Published in:IEEE open journal of the Industrial Electronics Society 2023-01, Vol.4, p.1-12
Main Authors: Aalami, Mohammadamin, Babaei, Ebrahim, Zadeh, Saeid Ghassem
Format: Article
Language:English
Subjects:
Capacitors
Electric bridges
Electric power loss
Half-bridge inverter
Half-bridge-based Z-source inverter
Impedance-source Inverter
Inductors
Inverters
Stress
Switches
Topology
Voltage
Voltage gain
Z-source inverter
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Summary:A half-bridge-based impedance-source inverter with two T-shaped coupled inductors is proposed in this paper. Unlike the conventional half-bridge structure, the proposed topology can generate a zero-voltage level at its output stage. First, the proposed configuration and its modulation method are described, which will analyze the topology's various operational modes. Second, the boost-factor is determined, and a way to design the necessary passive devices is found. Third, a power loss breakdown study is investigated in order to devise a solution to improve the efficiency of the proposed structure. Fourth, various comparisons show the benefits and drawbacks of the presented design. These comparisons show that the proposed topology can provide a high boost-factor when coupled inductors are used. Furthermore, it has reduced voltage stresses on the components, resulting in a smaller size and lower cost. Finally, the experimental results are obtained by employing a prototype designed by the methodology presented in this paper. These results are used as a benchmark to determine whether the proposed topology works well. In addition, the power loss analysis and efficiency comparison are displayed.
ISSN:2644-1284
2644-1284
DOI:10.1109/OJIES.2023.3278753