TY - GEN
T1 - Sub-modular Power Optimizers Based on Partial Power Converters for Utility Scale PV Plants
AU - Flores-Bahamonde, Freddy
AU - Rojas, Julian
AU - Kouro, Samir
AU - Llor, Ana M.
AU - Rojas, Christian A.
AU - Perez, Marcelo A.
N1 - Funding Information:
ACKNOWLEDGMENT This work was supported by the Chilean Economic Development Agency, CORFO, under grant 17PTECES-75830 under the framework of the project AtaMoS TeC, by SERC Chile (CONICYT/FONDAP15110019), by AC3E (CONI-CYT/Basal/FB0008), and by Fondecyt 1191532 .
PY - 2019/10
Y1 - 2019/10
N2 - Increasing the amount of energy extracted from a large-scale photovoltaic (PV) plant directly impacts its profitability. Obtaining higher energy yields depends heavily on the efficiency of the power conversion stages, but also on the configuration of the PV plant. More distributed maximum power point tracking (MPPT) among PV modules, allows maximizing the amount of energy extracted, especially under non-uniform conditions. To deal with partial shading conditions at module level, a sub-module power optimizer based on partial power converters is proposed. The configuration employs an isolated partial DC-DC power converters allowing to decouple the shaded parts from the unshaded at PV module level, maximizing the energy extracted. The behavior of the proposed configuration is verified through simulation, which is compared with a classic string configuration through analysis based on performance, improvements, and drawbacks of the proposed structure under mismatching scenarios.
AB - Increasing the amount of energy extracted from a large-scale photovoltaic (PV) plant directly impacts its profitability. Obtaining higher energy yields depends heavily on the efficiency of the power conversion stages, but also on the configuration of the PV plant. More distributed maximum power point tracking (MPPT) among PV modules, allows maximizing the amount of energy extracted, especially under non-uniform conditions. To deal with partial shading conditions at module level, a sub-module power optimizer based on partial power converters is proposed. The configuration employs an isolated partial DC-DC power converters allowing to decouple the shaded parts from the unshaded at PV module level, maximizing the energy extracted. The behavior of the proposed configuration is verified through simulation, which is compared with a classic string configuration through analysis based on performance, improvements, and drawbacks of the proposed structure under mismatching scenarios.
UR - http://www.scopus.com/inward/record.url?scp=85084056843&partnerID=8YFLogxK
U2 - 10.1109/IECON.2019.8927237
DO - 10.1109/IECON.2019.8927237
M3 - Conference contribution
AN - SCOPUS:85084056843
T3 - IECON Proceedings (Industrial Electronics Conference)
SP - 4423
EP - 4428
BT - Proceedings
PB - IEEE Computer Society
T2 - 45th Annual Conference of the IEEE Industrial Electronics Society, IECON 2019
Y2 - 14 October 2019 through 17 October 2019
ER -
