Single-phase inverter with common grounded feature and connected into grid

Vosoughi Kurdkandi, Naser and Ghavipanjeh Marangalu, Milad and Naderi, Yahya and Hosseini, Seyed Hossein and Sabahi, Mehran; (2020) Single-phase inverter with common grounded feature and connected into grid. In: 2020 28th Iranian Conference on Electrical Engineering (ICEE). IEEE, IRN. ISBN 978-1-7281-7296-5 (https://doi.org/10.1109/ICEE50131.2020.9260847)

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Abstract

Transformer-less inverters are widely used in grid-tied photovoltaic (PV) applications due to their characteristics such as higher efficiency and lower price. In common-ground transformer-less PV inverters, the neutral point of grid is connected to the negative polarity of the PV panel directly to bypass the parasitic capacitances and to mitigate the leakage current. In this study, a single phase transformer-less grid-tied inverter is proposed and to obtain the unique characteristics of the recommended grid-connected topology, the series-parallel switching technique of the switched capacitor module in a packed unit is applied. Also, by utilizing the common grounding method, the leakage current is eliminated. The provided inverter can generate three-level output voltage waveform. To generate the switching gate pulses of utilized power switches, the peak current controller method is applied. The injected power flows (active and reactive powers) are adjusted using peak current control (PCC) method. Finally, a completely adjusted sinusoidal current can be delivered to power grid. In the next section, the operation procedure, comparison results are presented. Finally, to verify the accurate operation and the theoretical equations of the proposed inverter, simulation results are presented.

  • Item type:Book Section
    ID code:74866
    Dates:
    Date
    Event
    26 November 2020
    Published
    27 February 2020
    Accepted
    Notes:© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:10 Dec 2020 14:57
    Last modified:08 Apr 2024 14:05
    URI:https://strathprints.strath.ac.uk/id/eprint/74866
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