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논문 기본 정보

자료유형
학술저널
저자정보
Dave Heema Bharatkumar (Birla Institute of Technology and Science) Dheerendra Singh (Birla Institute of Technology and Science) Hari Om Bansal (Birla Institute of Technology and Science)
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.19 No.6
발행연도
2019.11
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1,351 - 1,365 (15page)

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This paper proposes two modified Z-source inverter topologies, namely an embedded L-Z-source inverter (EL-ZSI) and a coupled inductor L-Z source inverter (CL-ZSI). The proposed topologies offer a high voltage gain with a reduced passive component count and reduction in source current ripple when compared to conventional ZSI topologies. Additionally, they prevent overshoot in the dc-link voltage by suppressing heavy inrush currents. This feature reduces the transition time to reach the peak value of the dc-link voltage, and reduces the risk of component failure and overrating due to the inrush current. EL-ZSI and CL-ZSI possess all of the inherent advantages of the conventional L-ZSI topology while eliminating its drawbacks. To verify the effectiveness of the proposed topologies, MATLAB/Simulink models and scaled down laboratory prototypes were constructed. Experiments were performed at a low shoot through duty ratio of 0.1 and a modulation index as high as 0.9 to obtain a peak dc-link voltage of 53 V. This paper demonstrates the superiority of the proposed topologies over conventional ZSI topologies through a detailed comparative analysis. Moreover, experimental results verify that the proposed topologies would be advantageous for renewable energy source applications since they provide voltage gain enhancement, inrush current, dc-link voltage overshoot suppression and a reduction of the peak to peak source current ripple.

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Abstract
I. INTRODUCTION
II. ANALYSIS OF THE PROPOSED TOPOLOGIES
III. SIMPLE BOOST CONTROL OF THE PROPOSED TOPOLOGIES
IV. ANALYSIS OF THE ISSUES OF START-UP VOLTAGE OVERSHOOT AND CURRENT RIPPLE
V. COMPARATIVE ANALYSIS OF THE PROPOSED TOPOLOGIES WITH THE CONVENTIONAL TOPOLOGIES
VI. DERIVATION OF MATHEMATICAL AND MAGNETIC CONDITIONS FOR CURRENT RIPPLE CANCELLATION IN THE CL-ZSI
VII. SIMULATION AND EXPERIMENTAL RESULTS
VIII. CONCLUSION
REFERENCES

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