TY - GEN
T1 - Switched-Capacitor-Inductor-based Differential Power Converter for Solar PV Modules
AU - Niazi, Kamran Ali Khan
AU - Yang, Yongheng
AU - He, Jinkui
AU - Khan, Akif Zia
AU - Séra, Dezso
PY - 2019/9
Y1 - 2019/9
N2 - Energy harvesting from solar photovoltaic (PV) modules is affected by partial shading (contributes to mismatch issues), which in turn affects the entire system efficiency. Various power electronics converters have thus been investigated to address the mismatch issue due to partial shading, where the charges between PV submodules (typically, three submodules in a PV module) are redistributed. As a representative of the power electronic-based techniques, differential power processing (DPP) converters can improve the power extraction from the series-connected PV submodules. In this paper, a switched-capacitor-inductor (SCL)-based DPP converter is proposed to mitigate the mismatch effect for PV modules. The proposed converter only processes the differential power, enabling extraction of the maximum power from the PV module at a submodule level. The proposed topology is analyzed and compared with the traditional (Schottky) bypassing technique through simulations. Partial shading experiments are also performed for the traditional technique. A benchmarking with the prior-art DPP converters and experimental tests on the switched-inductor (SL)-based DPP topology are presented in this paper.
AB - Energy harvesting from solar photovoltaic (PV) modules is affected by partial shading (contributes to mismatch issues), which in turn affects the entire system efficiency. Various power electronics converters have thus been investigated to address the mismatch issue due to partial shading, where the charges between PV submodules (typically, three submodules in a PV module) are redistributed. As a representative of the power electronic-based techniques, differential power processing (DPP) converters can improve the power extraction from the series-connected PV submodules. In this paper, a switched-capacitor-inductor (SCL)-based DPP converter is proposed to mitigate the mismatch effect for PV modules. The proposed converter only processes the differential power, enabling extraction of the maximum power from the PV module at a submodule level. The proposed topology is analyzed and compared with the traditional (Schottky) bypassing technique through simulations. Partial shading experiments are also performed for the traditional technique. A benchmarking with the prior-art DPP converters and experimental tests on the switched-inductor (SL)-based DPP topology are presented in this paper.
KW - Photovoltaic (PV) modules
KW - Partial shading
KW - Mismatch
KW - Differential power processing (DPP) converter
KW - Switched-capacitor-inductor (SCL)
KW - Traditional (Schottky) bypassing
KW - Switched-inductor (SL)
UR - http://www.scopus.com/inward/record.url?scp=85076776253&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2019.8912615
DO - 10.1109/ECCE.2019.8912615
M3 - Article in proceeding
T3 - IEEE Energy Conversion Congress and Exposition
SP - 4613
EP - 4618
BT - 2019 IEEE Energy Conversion Congress and Exposition, ECCE 2019
PB - IEEE Press
T2 - 2019 IEEE Energy Conversion Congress and Exposition (ECCE)
Y2 - 29 September 2019 through 3 October 2019
ER -