Abstract
A low-frequency current ripple is introduced at the DC side of the single-phase inverter topology decreasing efficiency in the photovoltaic (PV), and battery systems and degrading the lifetime of an energy storage device. In this paper, a common-ground single-phase single-stage boost inverter for PV applications is presented. The introduced topology consists of three capacitors, one inductor, five switches, and four diodes. The introduced topology has the main features as the common ground between the DC input voltage source and AC output voltage, and voltage boost capability. Furthermore, the low-frequency input current ripple is significantly limited. Besides, the leakage current, which is one of the major problems in grid-connected PV applications, is limited in an introduced inverter. The operating principles, circuit analysis, Mathematical analysis, and PWM control strategy for the introduced inverter are discussed. The simulation results based on PSIM simulation are given at the end of the paper to confirm the feasibility, performance and viability of the introduced topology.
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This research was supported by Research Foundation funded by Thai Nguyen University of Technology.
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Ngo, MD., Nong, QV., Ngo, TN., Nguyen, HQ., Tran, TT., Ahn, SJ. (2021). A Common-Ground Single-Phase Boost Inverter with Suppressed Double-Frequency Ripple for Photovoltaic Applications. In: Sattler, KU., Nguyen, D.C., Vu, N.P., Long, B.T., Puta, H. (eds) Advances in Engineering Research and Application. ICERA 2020. Lecture Notes in Networks and Systems, vol 178. Springer, Cham. https://doi.org/10.1007/978-3-030-64719-3_3
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DOI: https://doi.org/10.1007/978-3-030-64719-3_3
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