Abstract
Mismatch effects are common in photovoltaic (PV) systems, which affect the overall system performance and the PV module
life. A mismatch causes an imbalance in the PV module voltages, and therefore, it is not recommended to connect PV modules
in parallel due to increased power losses and stresses. To mitigate the effect of mismatch, module-level power electronics
converters are considered as an effective solution. Accordingly, this paper introduces a differential power processing (DPP)
converter based on switched-capacitors (SCs) for parallel-connected PV strings. The proposed DPP converters are connected
across each PV module, which equalizes the PV module voltages. The technique can help to generate more output power
regardless of mismatch between PV modules and make the parallelization of PV strings possible. The proposed architecture is
analyzed through simulations and compared with parallel-connected PV strings using Schottky diodes.
life. A mismatch causes an imbalance in the PV module voltages, and therefore, it is not recommended to connect PV modules
in parallel due to increased power losses and stresses. To mitigate the effect of mismatch, module-level power electronics
converters are considered as an effective solution. Accordingly, this paper introduces a differential power processing (DPP)
converter based on switched-capacitors (SCs) for parallel-connected PV strings. The proposed DPP converters are connected
across each PV module, which equalizes the PV module voltages. The technique can help to generate more output power
regardless of mismatch between PV modules and make the parallelization of PV strings possible. The proposed architecture is
analyzed through simulations and compared with parallel-connected PV strings using Schottky diodes.
Original language | English |
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Title of host publication | The 10th International Conference on Power Electronics, Machines and Drives (PEMD 2020) |
Number of pages | 5 |
Publication date | 1 Jan 2021 |
Pages | 603-607 |
ISBN (Electronic) | 978-1-83953-542-0 |
DOIs | |
Publication status | Published - 1 Jan 2021 |
Event | 10th International Conference on Power Electronics, Machines and Drives - Online Duration: 15 Dec 2020 → 17 Dec 2020 Conference number: CP766 https://digital-library.theiet.org/content/conferences/cp766;jsessionid=9squu7gfdhe8m.x-iet-live-01 |
Conference
Conference | 10th International Conference on Power Electronics, Machines and Drives |
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Number | CP766 |
Location | Online |
Period | 15/12/2020 → 17/12/2020 |
Internet address |
Keywords
- Differential power processing (DPP)
- Mismatch
- Parallel-connected
- Photovoltaic (PV)
- Switched-capacitor