Chamarthi, Phani Kumar ; Gupta, Amit Kumar ; Joshi, Madhuwanti S. ; Agarwal, Vivek (2017) A Single-Stage uk-based Transformerless Inverter for 1-ϕ Grid-Connected PV Systems In: 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC), 25-30 June 2017, Washington, DC, USA.
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Official URL: http://doi.org/10.1109/PVSC.2017.8366123
Related URL: http://dx.doi.org/10.1109/PVSC.2017.8366123
Abstract
In this paper, a C uk based single-stage, single-phase transformerless inverter topology is proposed for grid-connected PV applications with inherent buck-boost capability. The proposed topology is presented along with a dedicated proposed modulation scheme. Since the negative terminal of the PV source is directly connected to the neutral of the grid, the proposed transformerless topology incurs zero leakage current, making it highly suitable for grid-tied solar PV applications. Only one input inductor is used for both the positive and negative half cycles, which along with symmetrical operation helps in eliminating DC current injection into the grid. The topology has five switches, out of which, two switches operate at line frequency. Therefore, higher efficiency is achieved due to lower switching loss. The PWM control and operating modes of the inverter are presented along with the simulation results. The proposed topology is validated experimentally and those results also included in the paper.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Source: | Copyright of this article belongs to Institute of Electrical and Electronics Engineers. |
| Keywords: | $\ddot{\mathrm{C}}$uk Converter; Grid-Connected Inverter; Leakage Current; Single-Stage Inverter; Sinusoidal PWM; Solar PV Inverter; Transformerless Inverter. |
| ID Code: | 115575 |
| Deposited On: | 24 Mar 2021 10:21 |
| Last Modified: | 24 Mar 2021 10:21 |
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