Abstract
A new modular dc/ac inverter based on a dual-winding isolated SEPIC/Cuk converter for medium and high power Photovoltaic (PV) applications is introduced. In this system, several current-source submodules (SMs) are connected in series to allow for additional voltage boosting. Each SM is designed as a combination of SEPIC/CUK converter to offer a flexible output range and continuous currents with small ripple at input and output sides. Furthermore, the SMs structure can generate different output voltage polarities. The main purpose of employing small-size high-frequency transformers are to (1) provide galvanic isolation, (2) eliminate PV grounding problems, (3) achieve minimum electromagnetic interference (EMI). The paper presents a description of the proposed topology and investigate its reliability performance in a PV grid-tied system using MATLAB simulations. An experimental prototype has been used and controlled by TMS32028335 DSP, as a proof of concept.
Original language | English |
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Title of host publication | 9th Renewable Power Generation Conference, RPG Dublin Online 2021 |
Place of Publication | New York, N.Y. |
Publisher | Institution of Engineering and Technology |
Pages | 259-264 |
Number of pages | 6 |
Edition | CP783 |
ISBN (Electronic) | 9781839534300, 9781839534300, 9781839535048, 9781839536199 |
DOIs | |
Publication status | Published - 22 Oct 2021 |
Event | 9th Renewable Power Generation Conference, RPG Dublin Online 2021 - Virtual, Online Duration: 1 Mar 2021 → 2 Mar 2021 |
Publication series
Name | IET Conference Publications |
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Number | CP783 |
Volume | 2021 |
Conference
Conference | 9th Renewable Power Generation Conference, RPG Dublin Online 2021 |
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City | Virtual, Online |
Period | 1/03/21 → 2/03/21 |
Funding
Shaqra University is gratefully acknowledged, and the present research has been done within its support.
Keywords
- cuk converter
- modular DC/AC inverter
- photovoltaic applications
- SEPIC converter