Reza Heidari
Coupled Inductor-based Soft-switched Boost-Ćuk Converter for Microinverter Applications
Heidari, Reza; Ali Ghanbari, Mohammad; Adib, Ehsan; Rivera, Marco
Authors
Abstract
In this study, a novel fully soft-switched high step-up dc-dc converter is proposed. The proposed converter comprises the integration of boost and Ćuk converters with the same input inductor and MOSFET, and series-connected output dc-link voltages. In this topology, the switch is turned on under zero current switching and low-voltage conditions since the converter works under discontinuous conduction mode due to small output Ćuk inductance. In addition, two coupled inductors are applied to create a similar voltage gain and soft switching conditions for all semiconductor elements. The first coupled inductor is placed in series with the Ćuk diode, which provides a balanced dc-link for wide load and input voltage variations and ZCS conditions for the Ćuk diode. The second coupled inductor forms a lossless passive snubber to provide a zero-voltage switching turn-off condition for the main switch. This lossless passive snubber provides a clamped circuit and reduces the turn-off slew rate of the switch voltage. This snubber circuit is simple with minimum elements, and the snubber capacitor discharges to the output while the switch is OFF. Moreover, the input current is ripple-free, which is appropriate for renewable energy systems integration. The experiments substantiate the effectiveness of the proposed converter.
Citation
Heidari, R., Ali Ghanbari, M., Adib, E., & Rivera, M. (2025). Coupled Inductor-based Soft-switched Boost-Ćuk Converter for Microinverter Applications. IEEE Transactions on Power Electronics, https://doi.org/10.1109/TPEL.2025.3542231
| Journal Article Type | Article |
|---|---|
| Acceptance Date | Feb 5, 2025 |
| Online Publication Date | Feb 14, 2025 |
| Publication Date | Feb 14, 2025 |
| Deposit Date | Mar 12, 2025 |
| Publicly Available Date | Mar 14, 2025 |
| Journal | IEEE Transactions on Power Electronics |
| Print ISSN | 0885-8993 |
| Electronic ISSN | 1941-0107 |
| Publisher | Institute of Electrical and Electronics Engineers |
| Peer Reviewed | Peer Reviewed |
| DOI | https://doi.org/10.1109/TPEL.2025.3542231 |
| Keywords | Boost converter, coupled inductor, Ćuk converter, high efficiency, lossless passive snubber |
| Public URL | https://nottingham-repository.worktribe.com/output/45436544 |
| Publisher URL | https://ieeexplore.ieee.org/document/10887243 |
Files
Reza Paper Ver1 2024.07.18
(1.7 Mb)
PDF