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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/22317
Title: Common Mode Leakage Current Analysis of 1f Grid-Tied Transformer Less H-Bridge PV Inverter
Authors: Srivastava A.
Seshadrinath, Jeevanand
Published in: 2021 International Conference on Sustainable Energy and Future Electric Transportation, SeFet 2021
2021 International Conference on Sustainable Energy and Future Electric Transportation, SeFet 2021
Abstract: Grid-connected applications of renewable energy sources(solar energy) are increasing day by day. For these applications, transformers play an important role in facilitating galvanic isolation and suitable voltage ratio for interconnection between grid and inverter. However, the omitting of the transformers from the complete power conversion system becomes inevitable because of having large size/weight and cost. Hence transformerless inverters are replacing conventional inverters for grid-connected PV systems at a rapid pace. It has been observed that a transformerless grid-connected H bridge inverter established a common mode resonant circuit with the formation of parasitic capacitance between PV terminals and grounded frame and hence, consequently, leakage current induced in the system. In this paper, a mathematical model has been derived by using source transformation approach for the common-mode resonant circuit of H bridge grid-connected PV inverter, and further, it has been analyzed for both unipolar and bipolar modulation strategies. Finally, a 1kW grid-connected single-phase H bridge PV inverter has been simulated on Matlab and verified with satisfactory results. © 2021 IEEE.
Citation: 2021 International Conference on Sustainable Energy and Future Electric Transportation, SeFet 2021 (2021)
URI: https://doi.org/10.1109/SeFet48154.2021.9375804
http://repository.iitr.ac.in/handle/123456789/22317
Issue Date: 2021
Publisher: Institute of Electrical and Electronics Engineers Inc.
Keywords: BPPWM etc
CMV
Leakage current
PV inverter
transformerless PV inverter
UPPWM
VSI
ISBN: 9.78173E+12
Author Scopus IDs: 57224567253
55509070600
Author Affiliations: Srivastava, A., Indian Institute of Technology Roorkee, Department of Electrical Engineering, Roorkee, India
Seshadrinath, J., Indian Institute of Technology Roorkee, Department of Electrical Engineering, Roorkee, India
Appears in Collections:Conference Publications [EE]

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