High Step-up Coupled Inductor Inverters Based on qSBIs

Hongchen Liu, Xi Su and Junxiong Wang
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Hongchen Liu: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
Xi Su: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
Junxiong Wang: School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China

Energies, 2019, vol. 12, issue 15, 1-13

Abstract: In this paper, two types of high step-up coupled inductor inverters based on qSBIs (quasi- switched boost inverters) are proposed. By applying the coupled inductor to the qSBIs, the voltage gain of the proposed inverter is regulated by turn ratio and duty ratio. Thus, a high voltage gain can be achieved without the circuits operating at the extreme duty cycle by choosing a suitable turn ratio of the coupled inductor. In addition, the proposed circuits have the characteristics of continuous input current and low voltage stress across the passive components. A boost unit can be added to the proposed inverters for further improvement of the voltage gain. In this paper, the working principle, steady state analysis, and the comparisons of the proposed inverter with other impedance-source inverters are described. A 200 W prototype was created and the experimental results confirm the correctness of the analysis in this paper.

Keywords: inverter; high voltage gain; coupled inductor; DC–AC converter (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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