A modified bypass circuit for improved hot spot reliability of solar panels subject to partial shading

Daliento, S.; Napoli, Fabio Di; Guerriero, Pierluigi; d’Alessandro, V.

doi:10.1016/j.solener.2016.05.001

Cited by 117 publications

(75 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…By contrast, a shaded cell can be excluded by using a bypass diode to avoid impediment in power collection from the remaining cells, which results in energy loss from the shaded cell [69,93]. In thin-film CIGS, the bypass diode cannot protect the modules from damage [92].…”

Section: Bypass and Blocking Diodesmentioning

confidence: 99%

“…When one cell is shaded, its bypass diode behaves as a load and allows current to flow through it from the rest of the cells, which maximizes the performance of the system [90]. By contrast, a shaded cell can be excluded by using a bypass diode to avoid impediment in power collection from the remaining cells, which results in energy loss from the shaded cell [69,93]. In thin-film CIGS, the bypass diode cannot protect the modules from damage [92].…”

Section: Bypass and Blocking Diodesmentioning

confidence: 99%

See 1 more Smart Citation

Performance Evaluation of Maximum Power Point Tracking Approaches and Photovoltaic Systems

et al. 2018

View full text Add to dashboard Cite

This paper elaborates a comprehensive overview of a photovoltaic (PV) system model, and compares the attributes of various conventional and improved incremental conductance algorithms, perturbation and observation techniques, and other maximum power point tracking (MPPT) algorithms in normal and partial shading conditions. Performance evaluation techniques are discussed on the basis of the dynamic parameters of the PV system. Following a discussion of the MPPT algorithms in each category, a table is drawn to summarize their key specifications. In the performance evaluation section, the appropriate PV module technologies, atmospheric effects on PV panels, design complexity, and number of sensors and internal parameters of the PV system are outlined. In the last phase, a comparative table presents performance-evaluating parameters of MPPT design criterion. This paper is organized in such a way that future researchers and engineers can select an appropriate MPPT scheme without complication.

show abstract

Section: Bypass and Blocking Diodesmentioning

confidence: 99%

Section: Bypass and Blocking Diodesmentioning

confidence: 99%

Performance Evaluation of Maximum Power Point Tracking Approaches and Photovoltaic Systems

et al. 2018

View full text Add to dashboard Cite

show abstract

“…In more alarming situation, partial shading may cause permanent damage of PV modules because of hot spot phenomena, which can be dealt using bypass diodes. Thus, it is beneficial to reduce the effects caused by partial shading in a PV system …”

Section: Introductionmentioning

confidence: 99%

A detailed comparative analysis of different photovoltaic array configurations under partial shading conditions

Jha

Triar

2019

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Summary The objective of this paper is to compare the performances of different photovoltaic (PV) array configurations (series, parallel, series‐parallel, total‐cross‐tied, bridge‐linked, and honey comb) and proposed hybrid configurations (series parallel–total cross tied, bridge linked–total cross tied, honey comb–total cross tied, and bridge linked–honey comb) under artificial and realistic partial shading conditions. The performances of all these configurations have been compared on the basis of their maximum powers, fill factors, thermal voltages, and relative power losses. Different PV array configurations have also been compared on the basis of other significant factors (faults, limitations of specific parameters of the PV system, and cost). The single‐diode model of PV module is considered in this paper for modelling of PV module. The obtained results of different PV array configurations give beneficial knowledge regarding the performances of these configurations for several shading patterns and assist to choose the most satisfactory configuration for a particular shading pattern.

show abstract

“…If a bypass diode is used, a cell in reverse bias renders useless the rest of the cells under the bypass diode [6]. The hot-spot occurrence is particularly frequent and always happens when a shadow covers the module, thus reducing the photo-generated current [7,8]. In order to protect shaded cells from breakdown voltage (BV), bypass diodes linked in antiparallel with the cell or module is applied.…”

Section: Introductionmentioning

confidence: 99%

Crystalline Silicon PV Module Under Effect of Shading Simulation of the Hot-Spot Condition

Anjos

Melício

Mendes

et al. 2017

IFIP Advances in Information and Communication Technology

View full text Add to dashboard Cite

Abstract. This paper centers on the silicon crystalline PV module technology subjected to operation conditions with some cells partially or fully shaded. A shaded cell under hot-spot condition operating at reverse bias are dissipating power instead of delivering power. A thermal model allows analyzing the temperature increase of the shaded cells of the module under hot-spot condition with or without protection by a bypass diode. A comparison of the simulation results for a crystalline PV module without shading and with partial or full shading is presented.

show abstract

A modified bypass circuit for improved hot spot reliability of solar panels subject to partial shading

Cited by 117 publications

References 21 publications

Performance Evaluation of Maximum Power Point Tracking Approaches and Photovoltaic Systems

Performance Evaluation of Maximum Power Point Tracking Approaches and Photovoltaic Systems

A detailed comparative analysis of different photovoltaic array configurations under partial shading conditions

Crystalline Silicon PV Module Under Effect of Shading Simulation of the Hot-Spot Condition

Contact Info

Product

Resources

About