Reliability of power conversion systems in photovoltaic applications

2016 ◽  
pp. 391-422
Author(s):  
Flicker ◽  
Kaplar
Keyword(s):  
Power Conversion ◽  
Photovoltaic Applications

scholarly journals A Review on Transformerless Step-Up Single-Phase Inverters with Different DC-Link Voltage for Photovoltaic Applications

Energies ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3626 ◽  
Author(s):  
Wenjie Liu ◽  
Kamran Ali Khan Niazi ◽  
Tamas Kerekes ◽  
Yongheng Yang
Keyword(s):  
Single Phase ◽  
Power Conversion ◽  
Energy Systems ◽  
Energy Resources ◽  
Power Electronic ◽  
Power Electronic Converters ◽  
Fossil Energy ◽  
The Past ◽  
Photovoltaic Applications ◽  
Fast Development

Photovoltaic (PV) energy has been competitive in power generation as an alternative to fossil energy resources over the past decades. The installation of grid-connected solar energy systems is expected to increase rapidly with the fast development of the power electronics technology. As the key to the interface of the PV energy and the grid, power converters should be reliable, efficient and comply with the grid requirements. Considering the nature of PV energy, the power conversion should be flexible (e.g., high step-up DC-DC conversion and harmonic-free DC-AC conversion). Accordingly, many power electronic converters have been reported in literature. Compared with isolated inverters, transformerless inverters show great advantages. This paper thus presents an overview of the transformerless step-up single-phase inverters for PV applications based on the dc-link configurations. Grid-connected PV inverters are classified as constant dc-link voltage structures, pseudo-dc-link voltage structures, pulsating dc-link voltage structures and integrated dc-link voltage structures. The discussion on the composition of different dc-link structures is presented, which provides guidance to select appropriate transformerless inverter topologies for PV applications.

Configuration-centered photovoltaic applications of metal halide perovskites

2017 ◽  
Vol 5 (3) ◽  
pp. 902-909 ◽  
Author(s):  
Qiong Wang ◽  
Miaoqiang Lyu ◽  
Meng Zhang ◽  
Jung-Ho Yun ◽  
Lianzhou Wang
Keyword(s):  
Crystalline Silicon ◽  
Power Conversion ◽  
Metal Halide ◽  
Silicon Solar Cells ◽  
Crystalline Silicon Solar Cells ◽  
The Past ◽  
Photovoltaic Applications ◽  
Halide Perovskites ◽  
And Performance ◽  
Lead Halide

Metal halide perovskites, particularly lead halide perovskites, have seen extraordinary breakthroughs in photovoltaics with power conversion efficiency swiftly surging to over 22% in the past few years, demonstrating their huge potential for rivalry with crystalline silicon solar cells in terms of production cost and performance for the future photovoltaic market.

scholarly journals IMPLEMENTATION OF IMPEDANCE SOURCE INVERTER SYSTEM FOR PHOTOVOLTAIC APPLICATIONS

2013 ◽  
pp. 211-215
Author(s):  
NISHA K.C. R ◽  
T.N. BASAVARAJ
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Power Conversion ◽  
Current Source ◽  
Voltage Source ◽  
Voltage Source Inverter ◽  
Energy Applications ◽  
Current Source Inverter ◽  
Photovoltaic Application ◽  
Photovoltaic Applications

This paper presents a high performance, low cost inverter for photovoltaic systems based on Impedance-source concept. Traditional Voltage-source inverter and Current-source inverter has improved to the new Z-source inverter, with a unique X-shaped network in it. This Impedance-source inverter can provide a single stage power conversion concept where as the traditional inverter requires two stage power conversion for renewable energy applications. A new low cost solar cell powered Z-source inverter system is simulated and the results are compared with the traditional Voltage-source inverter system. Performance analysis, simulation and comparison have been confirmed that the Z-source inverter system is more appropriate for photovoltaic application than their counterparts. Hardware implementation is done to validate the proposed system.

Large band-gap copolymers based on a 1,2,5,6-naphthalenediimide unit for polymer solar cells with high open circuit voltages and power conversion efficiencies

2016 ◽  
Vol 4 (19) ◽  
pp. 7372-7381 ◽  
Author(s):  
Zuojia Li ◽  
Kui Feng ◽  
Jiang Liu ◽  
Jun Mei ◽  
Ying Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Polymer Solar Cells ◽  
Power Conversion ◽  
Open Circuit ◽  
Active Layers ◽  
Photovoltaic Applications ◽  
Conversion Efficiencies ◽  
Open Circuit Voltages

Large band-gap copolymers based on 1,2,5,6-naphthalenediimide were developed for photovoltaic applications. A PCE of 6.35% was obtained by gradually optimizing the morphology of active layers.

Fabrication of Flexible and Semitransparent PTB7:PC71BM Organic Solar Cells

2018 ◽  
Vol 916 ◽  
pp. 212-216 ◽  
Author(s):  
Shunjiro Fujii
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Organic Solar Cells ◽  
Bulk Heterojunction ◽  
Power Conversion ◽  
Flexible Substrates ◽  
Device Structure ◽  
Photovoltaic Applications ◽  
Pet Substrate

Semitransparent bulk-heterojunction (BHJ) solar cells have attracted a strong attention due to the possible use in new photovoltaic applications. However, semitransparent BHJ solar cells on flexible substrates have not yet been developed. In this work, flexible BHJ solar cells were fabricated on an ITO/PET substrate using an inverted PET/ITO/PFN/PTB7:PC71BM/MoO3/Au device structure. The power conversion efficiency (PCE) of the device was 3.4 %. Fabrication of semitransparent solar cells was further demonstrated utilizing a MoO3/Au/MoO3 transparent anode. The semitransparent solar cell showed bifacial energy generation when illuminated from both front and backside. The PCEs with illumination from the ITO or Au/MoO3 side were 2.7 % and 2.1 %, respectively. These results showed that a semitransparent PTB7:PC71BM solar cell was successfully fabricated on flexible PET substrates.

Broadband and ultrahigh optical haze thin films with self-aggregated alumina nanowire bundles for photovoltaic applications

2015 ◽  
Vol 8 (9) ◽  
pp. 2650-2656 ◽  
Author(s):  
Gumin Kang ◽  
Kyuyoung Bae ◽  
Minwoo Nam ◽  
Doo-Hyun Ko ◽  
Kyoungsik Kim ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Organic Solar Cells ◽  
Power Conversion ◽  
Photovoltaic Applications

Self-aggregated alumina nanowire structures have been demonstrated by anodization of aluminum and a subsequent pore breaking process for improving the power conversion efficiency of organic solar cells.

The Dion-Jacobson perovskite CsSbCl4: a promising Pb-free solar-cell absorber with optimal bandgap ~1.4 eV, strong optical absorption ~105 cm-1, and large power-conversion efficiency beyond 20%

2021 ◽  
Author(s):  
Wen-hui Guo ◽  
Yao-hui Zhu ◽  
Min Zhang ◽  
Juan Du ◽  
Yu-lang Cen ◽  
...  
Keyword(s):  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Great Promise ◽  
Manufacturing Cost ◽  
Large Power ◽  
Inorganic Hybrid ◽  
Photovoltaic Applications ◽  
Halide Perovskites

Organic-inorganic hybrid Pb-based halide perovskites, especially the well-known MAPbI3, have shown great promise for photovoltaic applications due to their fast-growing power-conversion efficiency (PCE) and low manufacturing cost. However, their poor...

Formation of high temperature phase in flash-evaporated SnSe films

1990 ◽  
Vol 48 (4) ◽  
pp. 698-699
Author(s):  
J.P.S. Hanjra
Keyword(s):  
Thin Films ◽  
Electrical Properties ◽  
Energy Gap ◽  
Dominant Role ◽  
Fine Powder ◽  
High Temperature Phase ◽  
Temperature Phase ◽  
Water Mixture ◽  
Flash Evaporation ◽  
Photovoltaic Applications

Tin mono selenide (SnSe) with an energy gap of about 1 eV is a potential material for photovoltaic applications. Various authors have studied the structure, electronic and photoelectronic properties of thin films of SnSe grown by various deposition techniques. However, for practical photovoltaic junctions the electrical properties of SnSe films need improvement. We have carried out investigations into the properties of flash evaporated SnSe films. In this paper we report our results on the structure, which plays a dominant role on the electrical properties of thin films by TEM, SEM, and electron diffraction (ED).Thin films of SnSe were deposited by flash evaporation of SnSe fine powder prepared from high purity Sn and Se, onto glass, mica and KCl substrates in a vacuum of 2Ø micro Torr. A 15% HF + 2Ø% HNO3 solution was used to detach SnSe film from the glass and mica substrates whereas the film deposited on KCl substrate was floated over an ethanol water mixture by dissolution of KCl. The floating films were picked up on the grids for their EM analysis.

A thiourea additive-based quadruple cation lead halide perovskite with an ultra-large grain size for efficient perovskite solar cells

Nanoscale ◽  
2019 ◽  
Vol 11 (45) ◽  
pp. 21824-21833 ◽  
Author(s):  
Jyoti V. Patil ◽  
Sawanta S. Mali ◽  
Chang Kook Hong
Keyword(s):  
Thin Films ◽  
Grain Size ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Inorganic Perovskite ◽  
Halide Perovskite ◽  
Lead Halide

Controlling the grain size of the organic–inorganic perovskite thin films using thiourea additives now crossing 2 μm size with >20% power conversion efficiency.

A privileged ternary blend enabling non-fullerene organic photovoltaics with over 14% efficiency

2020 ◽  
Vol 8 (43) ◽  
pp. 15135-15141
Author(s):  
Jing Yan ◽  
Yuan-Qiu-Qiang Yi ◽  
Jianqi Zhang ◽  
Huanran Feng ◽  
Yanfeng Ma ◽  
...  
Keyword(s):  
Small Molecule ◽  
Organic Photovoltaics ◽  
Power Conversion ◽  
Ternary Blend ◽  
Conversion Efficiencies

Two non-fullerene small molecule acceptors, NT-4F and NT-4Cl, were designed and synthesized. Power conversion efficiencies of 11.44% and 14.55% were achieved for NT-4Cl-based binary and ternary devices, respectively.

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