The grid-connected or standalone PV central inverter architecture is comprised of several PV modules which are connected in different ways to form the PV array.The power generation capability of the PV array is primar...The grid-connected or standalone PV central inverter architecture is comprised of several PV modules which are connected in different ways to form the PV array.The power generation capability of the PV array is primarily affected by partial shading conditions(PSC).Due to PSCs,the power output of the PV array is dramatically reduced,and mismatching losses are induced in the PV modules.Based on the extent of these problems,multiple peaks also appear in the power-voltage(P-V)curve,which makes it very difficult to track the global maximum power point(GMPP).The main objective of this research paper is to model and simulate the series(S),series-parallel(SP),bridge-link(BL),honey-comb(HC),total-cross-tied(TCT)and proposed triple-tied(TT)solar PV array configurations under various partial shading scenarios.The performance of all PV configurations is evaluated under a uniform approach,considering eight different shading scenarios.The performance of the considered PV configurations is analyzed in terms of their mismatching power losses,fill factors,efficiency,global maximum power points(GMPPs),local maximum power points(LMPPs),voltages and currents at GMPPs,open circuit voltage and short circuit currents.The above-mentioned PV configurations are modeled and simulated in a Matlab/Simulink environment by considering the KC-200GT module parameters.展开更多
Partial shading conditions(PSC)are unavoidable and are the main reason for the reduction in power from a photovoltaic(PV)array.With proper arrangement,the impact of PSC can be somewhat mitigated.There are distinct typ...Partial shading conditions(PSC)are unavoidable and are the main reason for the reduction in power from a photovoltaic(PV)array.With proper arrangement,the impact of PSC can be somewhat mitigated.There are distinct types of configurations,including series,parallel,series-parallel(SP),honeycomb,total cross-tied(TCT),etc.This article presents a novel SP-TCT configuration to maximize output power from PV panels under different shading conditions.The proposed configuration performance has been examined considering a 4×4 PV array under long-narrow and long-wide,short-narrow,short-wide and uniform shading conditions.The results of the proposed configurations are compared with existing configurations in terms of performance measures such as maximum power,fill factor,efficiency and mismatch losses.In all the cases,performance of the proposed configuration is nearer to the TCT configuration performance.The percentage improvement in terms of efficiency for the proposed novel SP-TCT configuration and TCT configuration is nearly 1.6%compared to other methods.展开更多
基金This work was supported by the Science and Engineering Research Board(SERB),Department of Science and Technology,Government of India under the Grant No:ECR/2017/000316。
文摘The grid-connected or standalone PV central inverter architecture is comprised of several PV modules which are connected in different ways to form the PV array.The power generation capability of the PV array is primarily affected by partial shading conditions(PSC).Due to PSCs,the power output of the PV array is dramatically reduced,and mismatching losses are induced in the PV modules.Based on the extent of these problems,multiple peaks also appear in the power-voltage(P-V)curve,which makes it very difficult to track the global maximum power point(GMPP).The main objective of this research paper is to model and simulate the series(S),series-parallel(SP),bridge-link(BL),honey-comb(HC),total-cross-tied(TCT)and proposed triple-tied(TT)solar PV array configurations under various partial shading scenarios.The performance of all PV configurations is evaluated under a uniform approach,considering eight different shading scenarios.The performance of the considered PV configurations is analyzed in terms of their mismatching power losses,fill factors,efficiency,global maximum power points(GMPPs),local maximum power points(LMPPs),voltages and currents at GMPPs,open circuit voltage and short circuit currents.The above-mentioned PV configurations are modeled and simulated in a Matlab/Simulink environment by considering the KC-200GT module parameters.
文摘Partial shading conditions(PSC)are unavoidable and are the main reason for the reduction in power from a photovoltaic(PV)array.With proper arrangement,the impact of PSC can be somewhat mitigated.There are distinct types of configurations,including series,parallel,series-parallel(SP),honeycomb,total cross-tied(TCT),etc.This article presents a novel SP-TCT configuration to maximize output power from PV panels under different shading conditions.The proposed configuration performance has been examined considering a 4×4 PV array under long-narrow and long-wide,short-narrow,short-wide and uniform shading conditions.The results of the proposed configurations are compared with existing configurations in terms of performance measures such as maximum power,fill factor,efficiency and mismatch losses.In all the cases,performance of the proposed configuration is nearer to the TCT configuration performance.The percentage improvement in terms of efficiency for the proposed novel SP-TCT configuration and TCT configuration is nearly 1.6%compared to other methods.
